Cisco ONS 15454 DWDM Reference Manual, Release 9.1
Chapter 11, Node Reference
Downloads: This chapterpdf (PDF - 4.07MB) The complete bookPDF (PDF - 24.57MB) | Feedback

Node Reference

Table Of Contents

Node Reference

11.1  DWDM Node Configurations

11.1.1  Terminal Node

11.1.2  OADM Node

11.1.3  ROADM Node

11.1.4  Hub Node

11.1.5  Anti-ASE Node

11.1.6  Line Amplifier Node

11.1.7  OSC Regeneration Node

11.2  Supported Node Configurations for OPT-RAMP-C and OPT-RAMP-CE Cards

11.2.1  OPT-RAMP-C or OPT-RAMP-CE Card in an Add/Drop Node

11.2.2  OPT-RAMP-C or OPT-RAMP-CE Card in a Line Site Node with Booster Amplification

11.3  Supported Node Configurations for PSM Card

11.3.1  Channel Protection

11.3.2  Multiplex Section Protection

11.3.3  Line Protection

11.3.4  Standalone

11.4  Multishelf Node

11.4.1  Multishelf Node Layout

11.4.2  DCC/GCC/OSC Terminations

11.5  Optical Sides

11.5.1  Optical Side Stages

11.5.2  Side Line Ports

11.5.3  Optical Side Configurations

11.6  Configuring Mesh DWDM Networks

11.6.1  Line Termination Mesh Node Using 40-WXC-C Cards

11.6.2  Line Termination Mesh Node Using 40-SMR2-C Cards

11.6.3  XC Termination Mesh Node

11.6.4  Mesh Patch Panels and Shelf Layouts

11.6.5  Using a Mesh Node With Omni-Directional Add/Drop Section

11.7  DWDM Node Cabling

11.7.1  OSC Link Termination Fiber-Optic Cabling

11.7.2  Hub Node Fiber-Optic Cabling

11.7.3  Terminal Node Fiber-Optic Cabling

11.7.4  Line Amplifier Node Fiber-Optic Cabling

11.7.5  OSC Regeneration Node Fiber-Optic Cabling

11.7.6  Amplified or Passive OADM Node Fiber-Optic Cabling

11.7.7  ROADM Node Fiber-Optic Cabling

11.8  Automatic Node Setup

11.8.1  Raman Setup and Tuning

11.9  DWDM Functional View

11.9.1  Navigating Functional View

11.9.2  Using the Graphical Display

11.10  DWDM Network Functional View

11.10.1  Navigating Network Functional View

11.10.2  Using the Graphical Display

11.11  Non-DWDM (TDM) Networks


Node Reference


This chapter explains the ONS 15454 dense wavelength division multiplexing (DWDM) node types that are available for the ONS 15454. The DWDM node type is determined by the type of amplifier and filter cards that are installed in an ONS 15454. The chapter also explains the DWDM automatic power control (APC), reconfigurable optical add/drop multiplexing (ROADM) power equalization, span loss verification, and automatic node setup (ANS) functions.


Note Unless otherwise specified, "ONS 15454" refers to both ANSI and ETSI shelf assemblies.



Note In this chapter, "OPT-BST" refers to the OPT-BST, OPT-BST-E, OPT-BST-L cards, and to the OPT-AMP-L and OPT-AMP-17-C cards when they are provisioned in OPT-LINE (optical booster) mode. "OPT-PRE" refers to the OPT-PRE card and to the OPT-AMP-L and OPT-AMP-17-C cards provisioned in OPT-PRE (preamplifier) mode.


Chapter topics include:

DWDM Node Configurations

Supported Node Configurations for OPT-RAMP-C and OPT-RAMP-CE Cards

Supported Node Configurations for PSM Card

Multishelf Node

Optical Sides

Configuring Mesh DWDM Networks

DWDM Node Cabling

Automatic Node Setup

DWDM Functional View

DWDM Network Functional View

11.1  DWDM Node Configurations

The ONS 15454 supports the following DWDM node configurations: hub, terminal, optical add/drop multiplexing (OADM), reconfigurable OADM (ROADM), anti-amplified spontaneous emission (anti-ASE), line amplifier, optical service channel (OSC) regeneration line, multishelf nodes, and node configurations for mesh networks. All node configurations can be provisioned with C-band or L-band cards except the OADM and anti-ASE nodes. These nodes require AD-xB-xx.x or AD-xC-xx.x cards, which are C-band only. All node configurations can be single-shelf or multishelf.


Note The Cisco TransportPlanner tool creates a plan for amplifier placement and proper node equipment.



Note To support multiple optical sides in mesh DWDM networks, east and west are no longer used to reference the left and right sides of the ONS 15454 shelf. If a network running a previous software release is upgraded to this release, west will be mapped to A and east to B. In two-sided nodes, such as a hub or ROADM node, Side A refers to Slots 1 through 6 and Side B refers to Slots 12 through 17. Terminal nodes have one side labeled "A," regardless of which slots have cards installed. For more information about configuring the ONS 15454 in mesh DWDM networks, see the "Configuring Mesh DWDM Networks" section.


11.1.1  Terminal Node

A terminal node is a single ONS 15454 node equipped with two TCC2/TCC2P cards and one of the following combinations:

One 32MUX-O card and one 32DMX-O card

One 32WSS card and either a 32DMX or a 32DMX-O card

One 32WSS-L card and one 32DMX-L card

One 40-WSS-C or 40-WSS-CE card and one 40-DMX-C or 40-DMX-CE card

One 40-MUX-C and one 40-DMX-C or 40-DMX-CE card

One 40-SMR1-C and one 15216-MD-40-ODD (ONS 15216 40-channel mux/demux patch panel)

One 40-SMR2-C and one 15216-MD-40-ODD


Note Although it is recommended that you use the 15216-MD-40-ODD card along with the 40-SMR1-C and 40-SMR2-C cards, you can alternatively use the 40-MUX-C and 40-DMX-C cards instead of the 15216-MD-40-ODD card.


Cards in the terminal nodes can be installed in Slots 1 through 6 or Slots 12 through 17. The side where cards are installed is always assigned as Side A.

Figure 11-1 shows an example of a terminal configuration with a 2MUX-O card installed. The channel flow for a terminal node is the same as the hub node (Figure 11-21).

Figure 11-1 Terminal Node Configuration With 32MUX-O Cards Installed

Figure 11-2 shows an example of a terminal configuration with a 40-WSS-C card installed.

Figure 11-2 Terminal Node Configuration with 40-WSS-C Cards Installed

Figure 11-3 shows an example of a terminal configuration with a 40-MUX-C card installed.

Figure 11-3 Terminal Node with 40-MUX-C Cards Installed

Figure 11-4 shows an example of a terminal configuration with a 40-SMR1-C card installed.

Figure 11-4 Terminal Node with 40-SMR1-C Card Installed

Figure 11-5 shows an example of a terminal configuration with 40-SMR1-C and booster amplifier cards installed.

Figure 11-5 Terminal Node with 40-SMR1-C and Booster Amplifier Cards Installed


Note When you use the 40-SMR1-C card along with a booster amplifier, the OSCM card must be connected to the booster amplifier.


Figure 11-6 shows an example of a terminal configuration with a 40-SMR2-C card installed.

Figure 11-6 Terminal Node with 40-SMR2-C Card Installed

11.1.2  OADM Node

An OADM node is a single ONS 15454 node equipped with cards installed on both sides and at least one AD-xC-xx.x card or one AD-xB-xx.x card and two TCC2/TCC2P cards. 32MUX-O/40-MUX-C or 32DMX-O/40-DMX-C/40-DMX-CE cards cannot be installed in an OADM node. In an OADM node, channels can be added or dropped independently from each direction and then passed through the reflected bands of all OADMs in the DWDM node (called express path). They can also be passed through one OADM card to another OADM card without using a TDM ITU-T line card (called optical pass-through) if an external patchcord is installed.

Unlike express path, an optical pass-through channel can be converted later to an add/drop channel in an altered ring without affecting another channel. OADM amplifier placement and required card placement is determined by the Cisco TransportPlanner tool or your site plan.

OADM nodes can be amplified or passive. In amplified OADMs, booster and preamplifier cards are installed on bode sides of the node. Figure 11-7 shows an example of an amplified OADM node configuration. In addition, OADM nodes can be asymmetric. Amplifiers may be installed in one side, but not the other. Or preamplifiers may be installed in one side, and a booster in the other.

Figure 11-7 Amplified OADM Node Configuration Example

Figure 11-8 shows an example of the channel flow on the amplified OADM node. Since the 32-wavelength plan is based on eight bands (each band contains four channels), optical adding and dropping can be performed at the band level and/or at the channel level (meaning individual channels can be dropped).

Figure 11-8 Amplified OADM Node Channel Flow Example

Figure 11-9 shows an example of a passive OADM node configuration. The passive OADM node is equipped with a band filter, one four-channel multiplexer/demultiplexer, and a channel filter on each side of the node.

Figure 11-9 Passive OADM Node Configuration Example

Figure 11-10 shows an example of traffic flow on the passive OADM node. The signal flow of the channels is the same as the amplified OADM, except that the OSC-CSM card is used instead of the OPT-BST and OSCM cards.

Figure 11-10 Passive OADM Node Channel Flow Example

11.1.3  ROADM Node

A ROADM node adds and drops wavelengths without changing the physical fiber connections. A ROADM node is equipped with two TCC2/TCC2P cards and one of the following combinations:

Two 32WSS cards and optionally, two 32DMX or 32DMX-O cards

Two 32WSS-L cards and optionally, two 32DMX-L cards

Two 40-WSS-C or 40-WSS-CE cards and optionally, two 40-DMX-C or 40-DMX-CE cards

Two 40-SMR1-C and two 15216-MD-40-ODD (ONS 15216 40-channel mux/demux patch panel)

Two 40-SMR2-C and two 15216-MD-40-ODD


Note Although it is recommended that you use the 15216-MD-40-ODD card along with the 40-SMR1-C and 40-SMR2-C cards, you can alternatively use the 40-MUX-C and 40-DMX-C cards instead of the 15216-MD-40-ODD card.


Transponders (TXPs) and muxponders (MXPs) can be installed in Slots 6 and 12 and, if amplification is not used, in any open slot.


Note Although not required, 32DMX-O can be used in a ROADM node. Cisco TransportPlanner automatically chooses the demultiplexer card that is best for the ROADM node based on the network requirements.


Figure 11-11 shows an example of an amplified ROADM node configuration with 32DMX cards installed.

Figure 11-11 ROADM Node with 32DMX Cards Installed

Figure 11-12 shows an example of an amplified ROADM node configuration with 40-WSS-C cards installed.

Figure 11-12 ROADM Node with 40-WSS-C Cards Installed

Figure 11-13 shows an example of a ROADM node with 32WSS-L and 32DMX-L cards installed.

Figure 11-13 ROADM Node with 32WSS-L and 32DMX-L Cards Installed

Figure 11-14 shows an example of a ROADM node with 40-SMR1-C cards installed.

Figure 11-14 ROADM Node with 40-SMR1-C Cards Installed

Figure 11-15 shows an example of a ROADM node with 40-SMR1-C and booster amplifier cards installed.

Figure 11-15 ROADM Node with 40-SMR1-C and Booster Amplifier Cards Installed


Note When you use the 40-SMR1-C card along with a booster amplifier, the OSCM card must be connected to the booster amplifier.


Figure 11-16 shows an example of a ROADM node with 40-SMR2-C cards installed.

Figure 11-16 ROADM Node with 40-SMR2-C Cards Installed

Figure 11-17 shows an example of an ROADM optical signal flow from Side A to Side B using the 32WSS or 40-WSS-C cards. The optical signal flow from Side B to Side A follows an identical path through the Side B OSC-CSM and 32WSS or 40-WSS-C cards. In this example, OSC-CSM cards are installed, hence OPT-BSTs are not needed.

Figure 11-17 ROADM Optical Signal Flow Example Using 32WSS or 40-WSS-C Card

1

The OSC-CSM receives the optical signal. It separates the optical service channel from the optical payload and sends the payload to the OPT-PRE module.

2

The OPT-PRE compensates for chromatic dispersion, amplifies the optical payload, and sends it to the 32WSS or 40-WSS-C/40-WSS-CE.

3

The 32WSS or 40-WSS-C/40-WSS-CE splits the signal into two components. The 80 percent component is sent to the DROP-TX port and the 20 percent component is sent to the EXP-TX port.

4

The drop component goes to the 32DMX card or 40-DMX-C/40-DMX-CE card where it is demultiplexed and dropped.

5

The express wavelength aggregate signal goes to the 32WSS or 40-WSS-C/40-WSS-CE on the other side where it is demultiplexed. Channels are stopped or forwarded based upon their switch states. Forwarded wavelengths are merged with those coming from the ADD path and sent to the OSC-CSM module.

6

The OSC-CSM combines the multiplexed payload with the OSC and sends the signal out the transmission line.


Figure 11-18 shows an example of an ROADM optical signal flow from Side A to Side B using the 40-SMR1-C card. The optical signal flow from Side B to Side A follows an identical path through the Side B booster and 40-SMR1-C card.

Figure 11-18 ROADM Optical Signal Flow Example Using 40-SMR1-C Card

1

The booster receives the optical signal. It separates the optical service channel from the optical payload and sends the payload to the preamplifier module within the 40-SMR1-C card.

2

The preamplifier module compensates for chromatic dispersion, amplifies the optical payload, and sends it to the 70/30 splitter within the 40-SMR1-C card.

3

The 70/30 splitter splits the signal into two components. The 70 percent component is sent to the DROP-TX port and the 30 percent component is sent to the EXP-TX port.

4

The drop component goes to the 15216-MD-40-ODD card where it is demultiplexed and dropped.

5

The express wavelength aggregate signal goes to the 40-SMR1-C card on the other side where it is demultiplexed. Channels are stopped or forwarded based upon their switch states. Forwarded wavelengths are merged with those coming from the ADD path and sent to the booster module.

6

The booster combines the multiplexed payload with the OSC, amplifies it, and sends the signal out the transmission line.


11.1.4  Hub Node

A hub node is a single ONS 15454 node equipped with two TCC2/TCC2P cards and one of the following combinations:

Two 32MUX-O cards and two 32DMX-O or 32DMX cards

Two 32WSS cards and two 32DMX or 32DMX-O cards

Two 32WSS-L cards and two 32DMX-L cards

Two 40-WSS-C or 40-WSS-CE cards and two 40-DMX-C or 40DMX-CE cards

Two 40-SMR1-C and two 15216-MD-40-ODD (ONS 15216 40-channel mux/demux patch panel)

Two 40-SMR2-C and two 15216-MD-40-ODD


Note Although it is recommended that you use the 15216-MD-40-ODD card along with the 40-SMR1-C and 40-SMR2-C cards, you can alternatively use the 40-MUX-C and 40-DMX-C cards instead of the 15216-MD-40-ODD card.



Note The configuration for a hub node using 40-SMR1-C or 40-SMR2-C cards is identical to the ROADM node, except that there is no patchcord connecting the two 40-SMR1-C or 40-SMR2-C cards. For more details on the ROADM node configuration, see the "ROADM Node" section.



Note The 32WSS/32WSS-L/40-WSS-C/40-WSS-CE and 32DMX/32DMX-L/40-DMX-C/ 40-DMX-CE cards are normally installed in ROADM nodes, but they can also be installed in hub and terminal nodes. If the cards are installed in a hub node, the 32WSS/32WSS-L/ 40-WSS-C/40-WSS-CE express ports (EXP RX and EXP TX) are not cabled.


A dispersion compensation unit (DCU) can also be added, if necessary. Figure 11-19 shows a hub node configuration with 32MUX-O and 32DMX-O cards installed.

Figure 11-19 Hub Node Configuration Example with 32-Channel C-Band Cards

Figure 11-20 shows a 40-channel hub node configuration with 40-WSS-C cards installed.

Figure 11-20 Hub Node Configuration Example with 40-WSS-C Cards

Figure 11-21 shows the channel flow for a hub node. Up to 32 channels from the client ports are multiplexed and equalized onto one fiber. Then, multiplexed channels are transmitted to the OPT-BST amplifier. The OPT-BST output is combined with an output signal from the OSCM card and transmitted to the other side.

Received signals are divided between the OSCM card and an OPT-PRE card. Dispersion compensation is applied to the signal received by the OPT-PRE amplifier, and it is then sent to the 32DMX-O card, which demultiplexes and attenuates the input signal.

Figure 11-21 Hub Node Channel Flow Example

11.1.5  Anti-ASE Node

In a mesh ring network, the ONS 15454 requires a node configuration that prevents ASE accumulation and lasing. An anti-ASE node can be created by configuring a hub node or an OADM node with some modifications. No channels can travel through the express path, but they can be demultiplexed and dropped at the channel level on one side and added and multiplexed on the other side.

The hub node is the preferred node configuration when some channels are connected in pass-through mode. For rings that require a limited number of channels, combine AD-xB-xx.x and 4MD-xx.x cards, or cascade AD-xC-xx.x cards. See Figure 11-8.

Figure 11-22 shows an anti-ASE node that uses all wavelengths in the pass-through mode. Use Cisco TransportPlanner to determine the best configuration for anti-ASE nodes.

Figure 11-22 Anti-ASE Node Channel Flow Example

11.1.6  Line Amplifier Node

A line amplifier node is a single ONS 15454 node that is used to amplify the optical signal in long spans. The line amplifier node can be equipped with one of the following sets of cards:

Two OPT-PRE cards, two OPT-BST cards, and two OSCM cards

Two OPT-PRE cards and two OSC-CSM cards

Two OPT-AMP-17-C cards and two OSCM cards

Attenuators might also be required between each preamplifier and OPT-BST amplifier to match the optical input power value and to maintain the amplifier gain tilt value.

Two OSCM cards are connected to the OPT-BST cards to multiplex the OSC signal with the pass-though channels. If the node does not contain an OPT-BST card, OSC-CSM cards must be installed instead of OSCM cards. Figure 11-23 shows an example of a line amplifier node configuration using OPT-BST, OPT-PRE, and OSCM cards.

Figure 11-23 Line Amplifier Node Configuration Example

11.1.7  OSC Regeneration Node

The OSC regeneration node is added to the DWDM networks for two purposes:

To electrically regenerate the OSC channel whenever the span links are 37 dB or longer and payload amplification and add/drop capabilities are not present. Cisco TransportPlanner places an OSC regeneration node in spans longer than 37 dB. The span between the OSC regeneration node and the next DWDM network site cannot be longer than 31 dB.

To add data communications network (DCN) capability wherever needed within the network.

OSC regeneration nodes require two OSC-CSM cards, as shown in Figure 11-24. The cards are installed in each side of the shelf.

Figure 11-24 OSC Regeneration Line Node Configuration Example

Figure 11-25 shows the OSC regeneration line node signal flow.

Figure 11-25 OSC Regeneration Line Node Flow

11.2  Supported Node Configurations for OPT-RAMP-C and OPT-RAMP-CE Cards

The OPT-RAMP-C and OPT-RAMP-CE cards can be equipped in the following network element type configurations:

C-band odd systems:

C-band terminal site with 32-MUX-O and 32-DMX-O cards

C-band hub node with 32-MUX-O and 32-DMX-O cards

C-band fixed OADM node

C-band line site

C-band 32-channel reconfigurable OADM (ROADM)

C-band terminal site using a 32-WSS and 32-DMX cards

C-band flexible terminal site using AD-xC cards

C-band hub node using a 32-WSS and 32-DMX cards

C-band 40-channel ROADM

C-band terminal site using a 40-WSS-C and 40-DMX-C cards

C-band terminal site using 40-MUX-C and 40-DMX-C cards

C-band hub node using a 40-WSS-C and 40-DMX-C cards

C-band up to 4 degree mesh node

C-band up to 8 degree mesh node

C-band multiring/mesh with MMU node

C-band 4 degree multiring/mesh node (MMU based)

C-band odd and even systems:

C-band 64-channel terminal site

C-band 72-channel terminal site

C-band 80-channel terminal site

C-band 64-channel hub site

C-band 72-channel hub site

C-band 80-channel hub site

C-band 64-channel ROADM site

C-band 72-channel ROADM site

C-band 80-channel ROADM site

The following amplifier cards are defined as booster or preamplifiers:

Booster:

OPT-BST

OPT-BST-E

OPT-AMP-17-C

OPT-AMP-C

Preamplifier:

OPT-PRE

OPT-AMP-C

OPT-BST

OPT-BST-E


Note When the booster is not needed, it must be replaced with an OSC-CSM card.


The maximum number of shelves that can be aggregated in a multishelf node are:

Eight, if the MS-ISC-100T switch card is used.

Twelve, if an external Catalyst 2950 switch is used.

11.2.1  OPT-RAMP-C or OPT-RAMP-CE Card in an Add/Drop Node

When the OPT-RAMP-C or OPT-RAMP-CE card is equipped in an add/drop node, the booster amplifier is mandatory and cannot be replaced by an OSC-CSM card. The preamplifier is an OPT-BST, OPT-BST-E, or OPT-AMP-C card, and must be cabled as an unidirectional card. Note that the COM-TX and LINE-RX ports must not be used for any other connections. If a single module ROADM 40-SMR-1-C is used as an add/drop card, a preamplifier is not required. If a single module ROADM 40-SMR-2-C is used as an add/drop card, both the preamplifier and booster are not required.

Figure 11-26 shows the OPT-RAMP-C or OPT-RAMP-CE card in an add/drop node.

Figure 11-26 OPT-RAMP-C or OPT-RAMP-CE Card in an Add/Drop Node

When required, a DCN extension can be used on A/D Side (i) in Figure 11-26.

Side (i) in Figure 11-26 can be equipped with the following cards:

WSS + DMX

AD-xC

WXC + MUX + DMX

Single module ROADM

11.2.2  OPT-RAMP-C or OPT-RAMP-CE Card in a Line Site Node with Booster Amplification

The OPT-RAMP-C or OPT-RAMP-CE card can be equipped in a line site node with a booster amplifier in the following configurations:

OPT-BST and OPT-BST-E can be used as booster in a line site node with OPT-RAMP-C or OPT-RAMP-CE. The booster cards need to be cabled as bidirectional units. Figure 11-27 shows the OPT-RAMP-C or OPT-RAMP-CE card in a line site configuration.

Figure 11-27 OPT-RAMP-C Card or OPT-RAMP-CE Card in a Line Site Configuration

The OPT-AMP-C can be used as a booster in a line site node with OPT-RAMP-C or OPT-RAMP-CE and needs to be cabled as a bidirectional unit. An additional DCU unit can be equipped between the OPT-AMP-C DC ports. Figure 11-28 shows a line site configured with OPT-AMP-C card and an additional DCU unit.

Figure 11-28 Line Site Configured with OPT-AMP-C

A line site can be configured with OPT-RAMP-C or OPT-RAMP-CE card on one side only. Figure 11-29 shows the line site configured with OPT-RAMP-C or OPT-RAMP-CE on side A only. The booster is configured on side B.

Figure 11-29 Line Site with OPT-RAMP-C or OPT-RAMP-CE On One Side

In all configurations, the booster amplifier facing the OPT-RAMP-C or OPT-RAMP-CE card is mandatory for safety reasons.

11.3  Supported Node Configurations for PSM Card

The PSM card supports the following node configurations:

Channel Protection

Multiplex Section Protection

Line Protection

Standalone

11.3.1  Channel Protection

In a channel protection configuration, the PSM card is used in conjunction with a TXP/MXP card. The PSM card in a channel protection configuration can be used in any site apart from a terminal site.

Figure 11-30 shows the DWDM functional view of a PSM card in channel protection configuration.

Figure 11-30 PSM Channel Protection Configuration

In this configuration, the COM-RX and COM-TX ports of the PSM card are connected to the TXP/MXP trunk ports. This configuration is applicable to an n-degree MSTP node, for example, a two-degree ROADM, an n-degree ROADM, or an OADM node. The example block diagram shows a two-degree node with Side A and Side B as the two sides. The Side A and Side B fiber-stage block can be DWDM cards that are used to amplify transmitted or received signal (see the "Fiber Stage" section for the list of cards). The Side A and Side B add/drop stage block can be DWDM cards that can add and drop traffic (see the "A/D Stage" section for the list of cards).

In the transmit direction, the traffic originating from a TXP/MXP trunk port is split by the PSM card on to the W-TX and P-TX ports. The W-TX and P-TX ports are connected to the ADD-RX ports of the add/drop stage cards in Side A and Side B respectively. The add/drop stage cards multiplex traffic on Side A and Side B line ports that become the working and protect paths respectively.

In the receive direction, the W-RX and P-RX ports of the PSM card are connected to the DROP-TX ports of the add/drop stage cards on Side A and Side B respectively. The add/drop stage cards demultiplex traffic received from Side A and Side B line ports that are the working and protect paths respectively. The PSM card selects one of the two input signals on the W-RX and P-RX ports to be transmitted to the COM-RX port of the PSM card.


Note All traffic multiplexed or demultiplexed by the two add/drop stage cards is not protected.


11.3.2  Multiplex Section Protection

The PSM card performs multiplex section protection when connected between a multiplexer/demultiplexer card in a terminal site. The multiplexer/demultiplexer stage can be built using WSS and DMX or 40MUX and 40DMX cards. The terminal sites can be 50/100 Ghz band. The number of supported channels can therefore be 32/40 or 72/80.

Figure 11-31 shows the block diagram of a PSM card in multiplex section protection configuration.

Figure 11-31 PSM Multiplex Section Protection Configuration

In the transmit direction, the traffic originating from a TXP trunk port is multiplexed by the Side A multiplexer. The PSM card splits traffic on to the W-TX and P-TX ports, which are independently amplified by two separated booster amplifiers.

In the receive direction, the signal on the line ports is preamplified by two separate preamplifiers and the PSM card selects one of the two input signals on the W-RX and P-RX ports to be transmitted to the COM-RX port of the PSM card. The received signal is then demultiplexed to a TXP card.

The presence of a booster amplifier is not mandatory. However, if a DCN extension is used, the W-TX and P-TX ports of the PSM card can be connected directly to the line. The presence of a preamplifier is also not mandatory.


Note The PSM card cannot be used with Raman amplification in a line protection or section protection configuration.


11.3.3  Line Protection

In a line protection configuration, the working and protect ports of the PSM card are connected directly to the external line. This configuration is applicable to any MSTP node that is configured as a terminal site. The multiplexer/demultiplexer stage can be built using WSS and DMX, 40MUX and 40DMX, 40-SMR1-C and 15216-MD-40-ODD, or 40-SMR2-C and 15216-MD-40-ODD cards. The terminal sites can be 50/100 Ghz band. The number of supported channels can therefore be 32/40 or 72/80.

Figure 11-32 shows the block diagram of a PSM card in line protection configuration.

Figure 11-32 PSM Line Protection Configuration

In the transmit direction, the traffic originating from a transponder trunk port is multiplexed by the Side A multiplexer and amplified by a booster amplifier. The Line-TX port of the amplifier is connected to the COM-RX port of the PSM card. The PSM card splits traffic received on the COM-RX port on to the W-TX and P-TX ports, which form the working and protect paths.

In the receive direction, the PSM card selects one of the two input signals on the W-RX and P-RX ports to be transmitted to the COM-RX port of the PSM card. The received signal is then preamplified and demultiplexed to the TXP card.

The presence of a booster amplifier is not mandatory. However, if a DCN extension is used, the COM-RX port of the PSM card is connected to the multiplex section. The presence of a preamplifier is also not mandatory; the COM-TX port of the PSM card can be connected to the demultiplexer.


Note The PSM card cannot be used with Raman amplification in a line protection or section protection configuration.


11.3.4  Standalone

In a standalone configuration, the PSM card can be equipped in any slot and supports all node configurations. In this configuration, the PSM card provides only basic functionality, such as, protection against a fiber cut, optical safety, and automatic laser shutdown (ALS). It does not provide other functionalities such as, automatic power control (APC), automatic node setup (ANS), network and node alarm correlation, circuit management, and so on.

11.4  Multishelf Node

An ONS 15454 node provisioned as a multishelf node can manage up to 12 subtending shelves as a single entity.


Note The reason for extending the number of subtending shelves from 8 to 12 is to accommodate and manage the new optical and DWDM cards that operate in the even band frequency grid.


The node controller is the main shelf; its TCC2/TCC2P cards run multishelf functions. Each subtending shelf must be equipped with TCC2/TCC2P cards, which run the shelf functions. For internal data exchange between the node controller shelf and subtending shelves, the node controller shelf must be equipped with redundant MS-ISC-100T cards or, as an alternative, the Catalyst 2950 switch. We recommend that you use the MS-ISC-100T cards. If using the Catalyst 2950, it is installed on one of the multishelf racks. All subtending shelves must be located in the same site at a maximum distance of 100 meters or 328 feet from the Ethernet switches used to support the communication LAN. Figure 11-33 shows an example of a multishelf node configuration.

Figure 11-33 Multishelf Node Configuration

A multishelf node has a single public IP address for all client interfaces (Cisco Transport Controller [CTC], Transaction Language One [TL1], Simple Network Management Protocol [SNMP], and HTTP); a client can only connect to the node controller shelf, not to the subtending shelves. The user interface and subtending shelves are connected to a patch panel using straight-through (CAT-5) LAN cables.

The node controller shelf has the following functions:

IP packet routing and network topology discovery at the node controller level.

Open Shortest Path First (OSPF) centralized on the node controller shelf.

The subtending shelves have the following functions:

Overhead circuits are not routed within a multishelf node but are managed at the subtending controller shelf only. To use overhead bytes, the AIC-I must be installed on the subtending shelf where it is terminated.

Each subtending shelf will act as a single shelf node that can be used as a timing source line, TCC/TCC2P clock, or building integrated timing supply (BITS) source line.

11.4.1  Multishelf Node Layout

Multishelf configurations are configured by Cisco TransportPlanner and are automatically discovered by the CTC software. In a typical multishelf installation, all optical units are equipped on the node controller shelf and TXP/MXP cards are equipped in the aggregated subtended shelves. In addition, all empty slots in the node controller shelf can be equipped with TXP/MXP cards. In a DWDM mesh network, up to eight optical sides can be configured with client and optical cards installed in different shelves to support mesh and ring-protected signal output.


Note When a DWDM ring or network has to be managed through a Telcordia operations support system (OSS), every node in the network must be set up as multi-shelf. OLA sites and nodes with one shelf must be set up as "multi-shelf stand-alone" to avoid the use of LAN switches.


11.4.2  DCC/GCC/OSC Terminations

A multishelf node provides the same communication channels as a single-shelf node:

OSC links terminate on OSCM/OSC-CSM cards. Two links are required between each ONS 15454 node. An OSC link between two nodes cannot be substituted by an equivalent generic communications channel/data communications channel (GCC/DCC) link terminated on the same pair of nodes. OSC links are mandatory and they can be used to connect a node to a gateway network element (GNE).

GCC/DCC links terminate on TXP/MXP cards.

The maximum number of DCC/GCC/OSC terminations that are supported in a multishelf node is 48.

11.5  Optical Sides

From a topological point of view, all DWDM units equipped in an MSTP node belongs to a side. A side can be identified by a letter (A, B, C, D, E, F, G, or H), or by the ports (called as side line ports, see Side Line Ports) that are physically connected to the spans. An MSTP node can be connected to a maximum of 8 different spans. Each side identifies one of the spans the MSTP node is connected to.


Note Side A and Side B replace "west" and "east" when referring to the two sides of the ONS 15454 shelf. Side A refers to Slots 1 through 6 (formerly "west"), and Side B refers to Slots 12 through 17 (formerly "east"). The line direction port parameter, East-to-West and West-to-East, has been removed.


Sides are viewed and managed from the Provisioning > WDM-ANS > Optical Sides tab in CTC.

11.5.1  Optical Side Stages

All MSTP nodes can be modelled according to Figure 11-34.

Figure 11-34 Interconnecting Sides Conceptual View

According to Figure 11-34, each MSTP node side includes DWDM units that can be conceptually divided into three stages.

Fiber stage—The set of DWDM cards with ports that directly or indirectly face the span.

A/D stage—The add/drop stage.

TXP/MXP stage—The virtual grouping of all TXP or MXP cards with signals multiplexed or demultiplexed to and from the physical fiber stage.

11.5.1.1  Fiber Stage

The fiber stage includes DWDM cards that are used to amplify transmitted or received signals and cards that are used to add optical supervision channels. The fiber stage cards are:

Booster amplifier cards that directly connect to the span, such as:

OPT-BST

OPT-BST-E

OPT-BST-L

OPT-AMP-C, when provisioned in OPT-LINE (booster amplifier) mode

OPT-AMP-L, when provisioned in OPT-LINE (booster amplifier) mode

OPT-AMP-17-C, when provisioned in OPT-LINE (booster amplifier) mode

Preamplifier cards, such as:

OPT-PRE

OPT-AMP-C, when provisioned in OPT-PRE (preamplifier) mode

OPT-AMP-L, when provisioned in OPT-PRE (preamplifier) mode

OPT-AMP-17-C, when provisioned in OPT-PRE (preamplifier) mode

OSC cards, such as:

OSCM

OSC-CSM

OPT-RAMP-C card

Table 11-1 shows the commonly deployed fiber stage layouts supported by DWDM mesh nodes. In the table, OPT-BST includes the OPT-BST, OPT-BST-E, and OPT-BST-L cards. OPT-AMP includes the OPT-AMP-L and OPT-AMP-17-C cards configured in either OPT-PRE or OPT-LINE mode.


Note In the table, L and C suffix is not reported because C-band and L-band amplifiers cannot be mixed in the same layout.


Table 11-1 Supported Fiber Stage Configurations 

Layout
Cards
Configurations

A

OPT-BST <-> OPT-PRE/OPT-AMP (OPT-PRE mode)

OPT-BST OSC ports connected to OSCM OSC ports or OSC-CSM LINE ports

OPT-BST LINE ports connected to the span

OPT-BST COM-TX ports connected to OPT-AMP (OPT-PRE mode) or OPT-PRE COM-RX ports

OPT-AMP (OPT-PRE mode) or OPT-PRE LINE-TX or COM-TX ports connected to the next stage (for example, a 40-WSS-C/40-WSS-CE COM-RX port in a ROADM node)

OPT-BST COM-RX ports connected to the next stage (for example, a 40-WSS-C/40-WSS-CE COM-TX port in a ROADM node)

B

OPT-AMP (OPT-BST mode) <-> OPT-PRE/OPT-AMP (OPT-PRE mode)

OPT-AMP (BST) OSC ports connected to OSCM OSC ports or OSC-CSM LINE ports

OPT-AMP (BST) LINE ports connected to the span

OPT-AMP (BST) COM-TX ports connected to OPT-AMP (PRE)/OPT-PRE COM-RX ports

OPT-AMP (PRE)/OPT-PRE LINE-TX/COM-TX port connected to the next stage (for example, a 40-WSS-C/40-WSS-CE COM-RX port in a ROADM node)

OPT-AMP (BST) COM-RX port connected to the next stage (for example, a 40-WSS-C/40-WSS-CE COM-TX port in a ROADM node)

C

OSC-CSM <-> OPT-PRE/OPT-AMP(OPT-PRE mode)

OSC-CSM LINE ports connected to the span

OSC-CSM COM-TX ports connected to OPT-AMP COM-RX ports

OPT-AMP(PRE)/OPT-PRE LINE-TX/COM-TX port connected to the next stage (for example, 40-WSS-C/40-WSS-CE COM-RX ports in ROADM)

OSC-CSM COM-RX port connected to the next stage (for example, a 40-WSS-C/40-WSS-CE COM-TX port in a ROADM node)

D

OPT-BST

OPT-BST OSC ports connected to OSCM OSC ports or OSC-CSM LINE ports

OPT-BST LINE ports connected to the span

OPT-BST COM ports connected to the next stage (for example, a 40-WSS-C/40-WSS-CE COM port in a ROADM node)

E

OPT-AMP (OPT-BST mode)

OPT-AMP OSC ports connected to OSCM OSC ports or OSC-CSM LINE ports

OPT-AMP LINE ports connected to the span

OPT-AMP COM ports connected to the next stage (for example, a 40-WSS-C/40-WSS-CE COM port in a ROADM node)

F

OSC-CSM

OSC-CSM LINE ports connected to the span

OSC-CSM COM ports connected to the next stage (for example, a 40-WSS-C/40-WSS-CE COM port in a ROADM node)


11.5.1.2  A/D Stage

The A/D stage includes DWDM cards that can add and drop traffic. The A/D stage is divided into three node types:

Mesh nodes—ONS 15454 nodes configured in multishelf mode can connect to eight different sides. For more detail on mesh node, see Configuring Mesh DWDM Networks.

Legacy—Half of a ROADM node or an OADM node with cascaded AD-xB-xx-x or AD-xC-xx.x cards

Non-A/D—A line node or a side that does not have A/D capability is included in the A/D stage

Stages are built by active cards and patchcords. However, the interconnecting sides are completed by the mesh patch panels (four-degree patch panel or eight-degree patch panel) in mesh nodes, or by patchcords connected to EXP-RX/EXP-TX ports in legacy nodes.

11.5.2  Side Line Ports

Side line ports are ports that are physically connected to the spans. Side line ports can be:

All ports terminating the fiber stage and physically labeled as LINE, such as ports on the following cards:

Booster amplifier (OPT-BST, OPT-BST-E, or OPT-BST-L cards, and the OPT-AMP-C, OPT-AMP-L, or OPT-AMP-17-C cards when provisioned in OPT-LINE mode)

OSC-CSM

OPT-RAMP-C

All ports that can be physically connected to the external span using DCN terminations, such as:

Booster amplifier LINE-RX and LINE-TX ports

OSC-CSM LINE-RX and LINE-TX ports

40-WXC-C COM-RX and COM-TX ports

MMU EXP-A-RX and EXP-A-TX ports

All ports that can be physically connected to the external span using DCN terminations in a line node, such as:

Preamplifier (OPT-PRE card and the OPT-AMP-C, OPT-AMP-L, or OPT-AMP-17-C cards when provisioned in OPT-PRE mode) COM-RX and COM-TX ports

Booster amplifier COM-TX port

OSC-CSM COM-TX port

All ports that can be physically connected to the external span using DCN terminations in a 40-channel MUX/DMX terminal node, such as:

40-MUX-C COM-TX port

40-DMX-C COM-RX port

All ports that can be physically connected to the external span when PSM cards implement line protection:

PSM W-TX and W-RX ports

PSM P-TX and P-RX ports


Note PSM card will support two sides A(w) and A(p).


11.5.3  Optical Side Configurations

You can use the following Side IDs depending on the type of node layout:

In legacy nodes (that is, a node with no provisioned or installed 40-WXC-C cards), the permissible Side IDs are only A and B.

In four-degree mesh nodes with four or less 40-WXC-C cards installed, the permissible Side IDs are A, B, C, and D.

In eight-degree mesh nodes with eight or less 40-WXC-C cards installed, the allowed Side IDs are A, B, C, D, E, F, G, and H.

The system automatically assigns Side IDs when you import the CTP XML configuration file into CTC. You can create a side manually using CTC or TL1 if the following conditions are met:

You use a permissible side identifier, A through H.

The shelf contains a TX and an RX side line port (see the "Side Line Ports" section).

The side line ports are not connected to an internal patchcord.


Note We do not recommend that you manually create or modify ONS 15454 optical sides.


The following tables show examples of how the system automatically assigns Side IDs for common DWDM layouts.

Table 11-2 shows a standard ROADM shelf with Sides A and B provisioned. The shelf is connected to seven shelves containing TXP, MXP, ADM-10G, GE_XP, 10GE_XP, GE_XPE, and 10GE_XPE cards.

Table 11-2 Multishelf ROADM Layout Example 

Shelf
Slots 1-6
Side
Slots 12-17
Side

1

WSS+DMX

A

WSS+DMX

B

2

TXP/MXP

TXP/MXP

3

TXP/MXP

TXP/MXP

4

TXP/MXP

TXP/MXP

5

TXP/MXP

TXP/MXP

6

TXP/MXP

TXP/MXP

7

TXP/MXP

TXP/MXP

8

TXP/MXP

TXP/MXP


Table 11-3 shows a protected ROADM shelf. In this example, Side A and B are Slots 1 through 6 in Shelves 1 and 2. 40-WSS-C/40-WSS-CE/40-DMX-C or 40-WSS-CE/40-DMX-CE cards are installed in Sides A and B. Slots 12 through 17 in Shelves 1 and 2 contain TXP, MXP, ADM-10G, GE_XP, 10GE_XP, GE_XPE, or 10GE_XPE cards.

Table 11-3 Multishelf Protected ROADM Layout Example 

Shelf
Slots 1-6
Side
Slots 12-17
Side

1

WSS+DMX

A

TXP/MXP

2

WSS+DMX

B

TXP/MXP

3

TXP/MXP

n/a

TXP/MXP

4

TXP/MXP

n/a

TXP/MXP

5

TXP/MXP

n/a

TXP/MXP

6

TXP/MXP

n/a

TXP/MXP

7

TXP/MXP

n/a

TXP/MXP

8

TXP/MXP

n/a

TXP/MXP


Table 11-4 shows a four-degree mesh node. Side A is Shelf 1, Slots 1 through 6. Side B and C are Shelf 2, Slots 1 through 6 and 12 through 17, and Side D is Shelf 3, Slots 1 through 6. 40-WXC-C cards in line termination mode are installed in Sides A through D.

Table 11-4 Multishelf Four-Degree Mesh Node Layout Example 

Shelf
Slots 1-6
Side
Slots 12-17
Side

1

WXC Line Termination

A

TXP/MXP

2

WXC Line Termination

B

WXC Line Termination

C

3

WXC Line Termination

D

TXP/MXP

4

TXP/MXP

n/a

TXP/MXP

5

TXP/MXP

n/a

TXP/MXP

6

TXP/MXP

n/a

TXP/MXP

7

TXP/MXP

n/a

TXP/MXP

8

TXP/MXP

n/a

TXP/MXP


Table 11-5 shows a protected four-degree mesh node example. In the example, Sides A through D are assigned to Slots 1 through 6 in Shelves 1 through 4.

Table 11-5 Multishelf Four-Degree Protected Mesh Node Layout Example 

Shelf
Slots 1-6
Side
Slots 12-17
Side

1

WXC Line Termination

A

TXP/MXP

2

WXC Line Termination

B

TXP/MXP

3

WXC Line Termination

C

TXP/MXP

4

WXC Line Termination

D

TXP/MXP

5

TXP/MXP

TXP/MXP

6

TXP/MXP

TXP/MXP

7

TXP/MXP

TXP/MXP

8

TXP/MXP

TXP/MXP


Table 11-6 shows a protected four-degree mesh node example. In the example, Sides A through D are assigned to Slots 1 through 4 in Shelves 1 through 4, and TXP, MXP, ADM-10G, GE_XP, 10GE_XP, GE_XPE, or 10GE_XPE cards are installed in Shelves 1 through 4, Slots 12-17, and Shelves 5 through 8, Slots 1 through 6 and 12 through 17.

Table 11-6 Multishelf Four-Degree Protected Mesh Node Layout Example 

Shelf
Slots 1-6
Side
Slots 12-17
Side

1

WXC Line Termination

A

TXP/MXP

2

WXC Line Termination

B

TXP/MXP

3

WXC Line Termination

C

TXP/MXP

4

WXC Line Termination

D

TXP/MXP

5

TXP/MXP

TXP/MXP

6

TXP/MXP

TXP/MXP

7

TXP/MXP

TXP/MXP

8

TXP/MXP

TXP/MXP


Table 11-7 shows a four-degree mesh node provisioned as an upgrade. In the example, Sides A through D are assigned to Slots 1 through 4. and 12 through 17 in Shelves 1and 2. 40-WXC-C cards in XC termination mode are installed in Sides A and B, and 40-WXC-C cards in line termination mode are installed in Sides C and D.

Table 11-7 Multishelf Four-Degree Mesh Node Upgrade Layout Example 

Shelf
Slots 1-6
Side
Slots 12-17
Side

1

WXC XC Termination

A

WXC XC Termination

B

2

WXC Line Termination

C

WXC Line Termination

D

3

TXP/MXP

TXP/MXP

4

TXP/MXP

TXP/MXP

5

TXP/MXP

TXP/MXP

6

TXP/MXP

TXP/MXP

7

TXP/MXP

TXP/MXP

8

TXP/MXP

TXP/MXP


Table 11-8 shows an eight-degree mesh node. In the example, Sides A through H are assigned to Slots 1 through 6 in Shelf 1, Slots 1 through 6 and 12 through 17 in Shelves 2 through 4, and Slots 1 through 6 in Shelf 5. 40-WXC-C cards in line termination mode are installed in Sides A through H.

Table 11-8 Multishelf Eight-Degree Mesh Node Layout Example 

Shelf
Slots 1-6
Side
Slots 12-17
Side

1

WXC Line Termination

A

TXP/MXP

2

WXC Line Termination

B

WXC Line Termination

C

3

WXC Line Termination

D

WXC Line Termination

E

4

WXC Line Termination

F

WXC Line Termination

G

5

WXC Line Termination

H

TXP/MXP

6

TXP/MXP

TXP/MXP

7

TXP/MXP

TXP/MXP

8

TXP/MXP

TXP/MXP


Table 11-9 shows another eight-degree mesh node. In the example, Sides A through H are assigned to Slots 1 through 6 in all shelves (Shelves 1 through 8). 40-WXC-C cards in line termination mode are installed in Sides A through H.

Table 11-9 Multishelf Four-Degree Mesh Node Upgrade Layout Example 

Shelf
Slots 1-6
Side
Slots 12-17
Side

1

WXC Line Termination

A

TXP/MXP

2

WXC Line Termination

B

TXP/MXP

3

WXC Line Termination

C

TXP/MXP

4

WXC Line Termination

D

TXP/MXP

5

WXC Line Termination

E

TXP/MXP

6

WXC Line Termination

F

TXP/MXP

7

WXC Line Termination

G

TXP/MXP

8

WXC Line Termination

H

TXP/MXP


Table 11-10 shows a four-degree mesh node with a user-defined side. Because the software assigns sides consecutively, and because the mesh node is four-degrees, the side assigned to Shelf 5, Slots 1 through 6 is "Unknown."

Table 11-10 Multishelf Four-Degree Mesh Node User-Defined Layout Example

Shelf
Slots 1-6
Side
Slots 12-17
Side

1

WXC Line Termination

A

TXP/MXP

2

TXP/MXP

WXC Line Termination

C1

3

WXC Line Termination

D

TXP/MXP

4

TXP/MXP

TXP/MXP

5

WXC Line Termination

U2

TXP/MXP

6

TXP/MXP

TXP/MXP

7

TXP/MXP

TXP/MXP

8

TXP/MXP

TXP/MXP

1 User-defined

2 Unknown


11.6  Configuring Mesh DWDM Networks

ONS 15454 shelves can be configured in mesh DWDM networks using the 40-WXC-C wavelength cross-connect cards and four-degree patch panel or eight-degree patch panels. Mesh DWDM networks can also be configured using the 40-SMR2-C cards and the four-degree patch panel.

ONS 15454 DWDM mesh configurations can be up to four degrees (four optical directions) when the four-degree patch panel is installed, and up to eight degrees (eight optical directions) when the eight-degree patch panel is installed. Two mesh node types are available, the line termination mesh node and the cross-connect (XC) termination mesh node.


Note Mesh nodes using the 40-WXC-C card requires multishelf management.


11.6.1  Line Termination Mesh Node Using 40-WXC-C Cards

The line termination mesh node is installed in native Software Release 9.1 mesh networks. Line termination mesh nodes can support between one and eight line terminations. Each line direction requires the following cards: 40-WXC-C, 40-MUX-C, 40-DMX-C or 40-DMX-CE, a preamplifier and a booster. Within this configuration, the following substitutions can be used:

The 40-MUX-C cards can be replaced with 40-WSS-C/40-WSS-CE cards.

The OPT-BST cards can be replaced with OPT-AMP-17-C (in OPT-BST mode) and/or OPT-BST-E cards.

The OPT-PRE can be replaced with an OPT-AMP-17-C (in OPT-LINE mode) card.

Each side of the line termination mesh node is connected as follows:

The 40-WXC-C COM-RX port is connected to the preamplifier output port.

The 40-WXC-C COM-TX port is connected to the booster amplifier COM-RX port.

The 40-WXC-C DROP TX port is connected to the 40-DMX-C or 40-DMX-CE COM-RX port.

The 40-WXC-C ADD-RX port is connected to the 40-MUX-C COM-TX port.

The 40-WXC-C EXP-TX port is connected to the mesh patch panel.

The 40-WXC-C EXP-RX port is connected to the mesh patch panel.

Figure 11-35 shows one shelf from a line termination node.

Figure 11-35 Line Termination Mesh Node Shelf

Figure 11-36 shows a functional block diagram of one line termination side using 40-WXC-C and 40-MUX-C cards.

Figure 11-36 Line Termination Mesh Node Side—40-MUX-C Cards

Figure 11-37 shows a functional block diagram line termination side using 40-WXC-C and 40-WSS-C cards.

Figure 11-37 Line Termination Mesh Node Side—40-WSS-C Cards

Figure 11-38 shows a functional block diagram of a node that interconnects a ROADM with MMU cards with two native line termination mesh sides.

Figure 11-38 Line Termination Mesh Nodes—ROADM With MMU Cards

11.6.2  Line Termination Mesh Node Using 40-SMR2-C Cards

Line termination mesh nodes using the 40-SMR2-C cards can support between one and four line terminations. Each line direction requires the 40-SMR2-C and 15216-MD-40-ODD cards. Although it is recommended that you use the 15216-MD-40-ODD card along with the 40-SMR2-C card, you can alternatively use the 40-MUX-C and 40-DMX-C cards instead of the 15216-MD-40-ODD card.

Each side of the line termination mesh node is connected as follows:

The 40-SMR2-C LINE-RX port is connected to the external line.

The 40-SMR2-C LINE-TX port is connected to the external line.

The 40-SMR2-C DROP TX port is connected to the 15216-MD-40-ODD (or 40-DMX-C) COM-RX port.

The 40-SMR2-C ADD-RX port is connected to the 15216-MD-40-ODD (or 40-MUX-C) COM-TX port.

The 40-SMR2-C EXP-TX port is connected to the mesh patch panel.

The 40-SMR2-C EXPi-RX (where i = 1, 2, 3) port is connected to the mesh patch panel.

Figure 11-39 shows the layout for a line termination node.

Figure 11-39 Line Termination Mesh Node Shelf

Figure 11-40 shows the functional block diagram of a four-degree line termination mesh node using 40-SMR2-C, 15216-MD-40-ODD, and 15454-PP-4-SMR patch panel.

Figure 11-40 Four-Degree Line Termination Mesh Node Functional Diagram

11.6.3  XC Termination Mesh Node

The XC termination mesh node, shown in Figure 11-41, is the second mesh node type. It is used to upgrade a non-mesh node to a mesh node or to interconnect two non-mesh nodes. The XC termination mesh nodes contain the following cards:

40-WXC-C cards

OPT-AMP-17-C cards configured in OPT-PRE mode

The XC termination mesh node is connected as follows:

The 40-WXC-C COM-RX port is connected to the MMU EXP-A-TX port.

The 40-WXC-C COM-TX port is connected to the MMU EXP-A-RX port.

The 40-WXC-C EXP-TX port is connected to the OPT-AMP-17-C COM-RX port.

The 40-WXC-C EXP-RX port is connected to the OPT-AMP-17-C COM-TX port.

The 40-WXC-C EXP-TX port is connected to the mesh patch panel.

The 40-WXC-C EXP-RX port is connected to the mesh patch panel.

Figure 11-41 XC Termination Mesh Node Shelf

11.6.4  Mesh Patch Panels and Shelf Layouts

ONS 15454 mesh topologies require the installation of a four-degree patch panel, PP-MESH-4 (for 40-WXC-C cards) or 15454-PP-4-SMR (for 40-SMR2-C cards) or an eight-degree patch panel, PP-MESH-8 (for 40-WXC-C cards). If the four-degree patch panel is installed, mesh topologies of up to four degrees can be created. If the eight-degree patch panel is installed, mesh topologies of up to eight degrees can be created. The four-degree patch panel contains four 1x4 optical splitters, and the eight-degree patch panel contains eight 1x8 splitters. Each mesh patch panel contains a 2x8 splitter that is used for the test access transmit and receive ports. Figure 11-42 shows a block diagram for the PP-MESH-4 patch panel.

Figure 11-42 PP-MESH-4 Patch Panel Block Diagram

At the mesh patch panel, the signal is split into four signals (if a four-degree patch panel is used) or eight signals (if an eight-degree patch panel is used). Figure 11-43 shows the signal flow at the four-degree PP-MESH-4 patch panel. 40-WXC-C cards connect to the four-degree patch panel at the EXP TX and COM RX ports.

Figure 11-43 PP-MESH-4 Patch Panel Signal Flow

The mesh patch panels interconnect 40-WXC-C cards to create mesh networks, including four-degree and eight-degree mesh topologies. In addition, shelves with 40-WXC-C cards can be configured with mesh patch panels to create multiring, MMU-based mesh nodes. 40-WXC-C cards can be installed in ROADM nodes with MMU cards to upgrade a two-degree MMU-based ROADM node into four-degree or eight-degree mesh nodes.

Figure 11-44 shows the block diagram of the four-degree 15454-PP-4-SMR patch panel connected to one 40-SMR2-C card. The 40-SMR2-C cards connect to the 15454-PP-4-SMR patch panel at the EXP RX ports.

Figure 11-44 15454-PP-4-SMR Patch Panel Block Diagram

You can use the 15454-PP-4-SMR patch panel to connect upto four 40-SMR2-C cards in a four-degree mesh node. The optical splitters inside the patch panel forward the output signal (EXP-TX port) of the 40-SMR2-C card on each side of the mesh node to the input port of the 40-SMR2-C cards on the other three sides of the mesh node. The 4x1 WXC block inside the 40-SMR2-C card selects which wavelength from which side must be propagated at the output of each side. Figure 11-43 shows the signal flow at the four-degree 15454-PP-4-SMR patch panel. 40-SMR2-C cards connect to the four-degree patch panel at the EXP-TX and EXP-RX ports.

Figure 11-45 15454-PP-4-SMR Patch Panel Signal Flow

11.6.5  Using a Mesh Node With Omni-Directional Add/Drop Section

Normally, multidegree mesh node use four or eight 40-WXC-C cards and a four-degree or eight-degree patch panel. Each of the 40-WXC-C cards uses a 40-MUX-C card to add wavelengths going to the span and a 40-DMX-C card to drop wavelengths coming in from the span. The 40-MUX-C and 40-DMX-C cards are connected to only one of the node directions. These cards can add/drop traffic only to/from the side that is associated to the 40-WXC-C card. The omni-directional configuration allows you to install a local multiplexer/demultiplexer that can add/drop traffic to/from any of the node directions. Figure 11-46 shows an example of how to set up a omni-directional add/drop configuration.

By setting up a NE as shown in the figure, it is possible to connect the transmit ports of TXP or MXP cards to a 40-MUX-C card and then connect the output of the 40-MUX-C card to an OPT-BST card. The OPT-BST card then connects to a preferred 40-WXC-C card in the four-degree or eight-degree ROADM node (40-WXC-C connected to port 4 of PP-MESH-4, as shown in the figure).

The patch panel splits the traffic coming from the OPT-BST card in all the node directions, through the software configuration. The wavelengths entering the 40-WXC-C cards (ports 1, 2, and 3) can be selectively sent out in any desired outbound direction. In the inbound direction, the patch panel on the preferred 40-WXC-C card, splits any of the wavelengths entering the NE through the 40-WXC-C cards (ports 1, 2, and 3). Through the software configuration, the wavelength can be passed to an OPT-PRE card or stopped. This whole configuration can be managed using a single IP address

An example of using a mesh node for omni-directional add/drop section is shown in Figure 11-46.

Figure 11-46 Mesh Node With Omni-Directional Add/Drop Section

11.7  DWDM Node Cabling

DWDM node cabling is specified by the Cisco TransportPlanner Internal Connections table. The following sections provide examples of the cabling that you will typically install for common DWDM node types.


Note The cabling illustrations shown in the following sections are examples. Always install fiber-optic cables based on the Cisco TransportPlanner Internal Connections table for your site.


11.7.1  OSC Link Termination Fiber-Optic Cabling

OSC link termination cabling include the following characteristics:

The OPT-BST and OSC-CSM cards are the only cards that directly interface with the line (span) fiber.

The OSCM card only carries optical service channels, not DWDM channels.

The OSCM and OSC-CSM cards cannot both be installed on the same side of the shelf (Side B or Side A). You can have different cards on each side, for example an OSCM card on Side A and an OSC-CSM card on Side B.

When an OPT-BST card and an OSC-CSM card are both used on the same side of the node, the OPT-BST card combines the supervision channel with the DWDM channels and the OSC-CSM card acts as an OSCM card; it does not carry DWDM traffic.

If an OPT-BST and an OSCM card are installed on Side B, the Side B OPT-BST OSC RX port is connected to the Side B OSCM TX port, and the Side B OPT-BST OSC TX port is connected to the Side B OSCM RX port.

If an OPT-BST and an OSC-CSM card are installed on Side B, the Side B OPT-BST OSC RX port is connected to the Side B OSC-CSM LINE TX port, and the Side B OPT-BST OSC TX port is connected to the Side B OSC-CSM LINE RX port.

If an OPT-BST and an OSCM card are installed on Side A, the Side A OPT-BST OSC TX port is connected to the Side A OSCM RX port, and the Side A OPT-BST OSC RX port is connected to the Side A OSCM TX port.

If an OPT-BST and an OSC-CSM card are installed on Side A, the Side A OPT-BST OSC TX port is connected to the Side A OSC-CSM LINE RX port, and the Side A OPT-BST OSC RX port is connected to the Side A OSC-CSM LINE TX port.

Figure 11-47 shows an example of OSC fibering for a hub node with OSCM cards installed.

Figure 11-47 Fibering OSC Terminations—Hub Node with OSCM Cards

1

Side A OPT-BST LINE RX to Side B OPT-BST or OSC-CSM LINE TX on adjacent node

5

Side B OSCM TX to Side B OPT-BST OSC RX

2

Side A OPT-BST LINE TX to Side B OPT-BST or OSC-CSM LINE RX on adjacent node

6

Side B OSCM RX to Side B OPT-BST OSC TX

3

Side A OPT-BST OSC TX to Side A OSCM RX

7

Side B OPT-BST LINE TX to Side A OPT-BST or OSC-CSM LINE RX on adjacent node

4

Side A OPT-BST OSC RX to Side A OSCM TX

8

Side B OPT-BST LINE RX to Side A OPT-BST or OSC-CSM LINE TX on adjacent node


11.7.2  Hub Node Fiber-Optic Cabling

The following rules generally apply to hub node cabling:

The Side A OPT-BST or OSC-CSM card common (COM) TX port is connected to the Side A OPT-PRE COM RX port or the Side A 32DMX-O/40-DMX-C/40-DMX-CE COM RX port.

The Side A OPT-PRE COM TX port is connected to the Side A 32DMX-O/40-DMX-C/40-DMX-CE COM RX port.

The Side A 32MUX-O/32WSS/32WSS-L COM TX port is connected to the Side A OPT-BST or Side A OSC-CSM COM RX port.

The Side B 32MUX-O/32WSS/32WSS-L COM TX port is connected to the Side B OPT-BST or Side B OSC-CSM COM RX port.

The Side B OPT-BST or Side B OSC-CSM COM TX port is connected to the Side B OPT-PRE COM RX port or the Side B 32DMX-O/32DMX COM RX port.

The Side B OPT-PRE COM TX port is connected to the Side B 32DMX-O/32DMX COM RX port.

Figure 11-48 shows an example of a hub node with cabling. In the example, OSCM cards are installed. If OSC-CSM cards are installed, they are usually installed in Slots 1 and 17.

Figure 11-48 Fibering a Hub Node

1

Side A DCU TX to Side A OPT-PRE DC RX1

6

Side B 32DMX-O COM RX to Side B OPT-PRE COM TX

2

Side A DCU RX to Side A OPT-PRE DC TX1

7

Side B 32MUX-O COM TX to Side B OPT-BST COM RX

3

Side A OPT-BST COM TX to Side A OPT-PRE COM RX

8

Side B OPT-PRE COM RX to Side B OPT-BST COM TX

4

Side A OPT-BST COM RX to Side A 32MUX-O COM TX

9

Side B DCU TX to Side B OPT-PRE DC RX1

5

Side A OPT-PRE COM TX to Side A 32DMX-O COM RX

10

Side B DCU RX to Side B OPT-PRE DC TX1

1 If a DCU is not installed, a 4-dB attenuator loop, +/- 1 dB must be installed between the OPT-PRE DC ports.


11.7.3  Terminal Node Fiber-Optic Cabling

The following rules generally apply to terminal node cabling:

A terminal site has only one side (as compared to a hub node, which has two sides). The terminal side can be either Side B or Side A.

The terminal side OPT-BST or OSC-CSM card COM TX port is connected to the terminal side OPT-PRE COM RX port or the 32DMX-O/40-DMX-C/40-DMX-CE COM RX port.

The terminal side OPT-PRE COM TX port is connected to the terminal side 32DMX-O/40-DMX-C/40-DMX-CE COM RX port.

The terminal side 32MUX-O/40-MUX-C COM TX port is connected to the terminal side OPT-BST or OSC-CSM COM RX port.

11.7.4  Line Amplifier Node Fiber-Optic Cabling

The following rules generally apply to line amplifier node cabling:

The line amplifier node layout allows all combinations of OPT-PRE and OPT-BST cards and allows you to use asymmetrical card choices in Side A-to-Side B and Side B-to-Side A configurations. For a given line direction, you can configure the four following possibilities:

Only preamplification (OPT-PRE)

Only booster amplification (OPT-BST)

Both preamplification and booster amplification (where a line amplifier node has amplification in at least one direction)

Neither preamplification nor booster amplification

If a Side A OPT-PRE card is installed:

The Side A OSC-CSM or OPT-BST COM TX is connected to the Side A OPT-PRE COM RX port.

The Side A OPT-PRE COM TX port is connected to the Side B OSC-CSM or OPT-BST COM RX port.

If a Side A OPT-PRE card is not installed, the Side A OSC-CSM or OPT-BST COM TX port is connected to the Side B OSC-CSM or OPT-BST COM RX port.

If a Side B OPT-PRE card is installed:

The Side B OSC-CSM or OPT-BST COM TX port is connected to the Side B OPT-PRE COM RX port.

The Side B OPT-PRE COM TX port is connected to the Side A OSC-CSM or OPT-BST COM RX port.

If an Side B OPT-PRE card is not installed, the Side B OSC-CSM or OPT-BST COM TX port is connected to the Side A OSC-CSM or OPT-BST COM RX port.

Figure 11-49 shows an example of a line amplifier node with cabling.

Figure 11-49 Fibering a Line Amplifier Node

1

Side A DCU TX to Side A OPT-PRE DC RX1

5

Side A OPT-BST COM RX to Side B OPT-PRE COM TX

2

Side A DCU RX to Side A OPT-PRE DC TX1

6

Side A OPT-BST COM RX to Side B OPT-PRE COM TX

3

Side A OPT-BST COM TX to Side A OPT-PRE COM RX

7

Side B DCU TX to Side B OPT-PRE DC RX1

4

Side A OPT-PRE COM TX to Side B OPT-BST COM RX

8

Side B DCU RX to Side B OPT-PRE DC TX1

1 If a DCU is not installed, a 4-dB attenuator loop, +/- 1 dB, must be installed between the OPT-PRE DC ports.


11.7.5  OSC Regeneration Node Fiber-Optic Cabling

The following rules generally apply to OSC regeneration node cabling:

The Side A OSC-CSM COM TX port connects to the Side B OSC-CSM COM RX port.

The Side A OSC-CSM COM RX port connects to the Side B OSC-CSM COM TX port.

Slots 2 through 5 and 12 through 16 can be used for TXP and MXP cards.

Figure 11-50 shows an example of an OSC regeneration node with cabling.

Figure 11-50 Fibering an OSC Regeneration Node

1

Side A OSC-CSM LINE RX to Side B OSC-CSM or OPT-BST LINE TX on adjacent node

4

Side A OSC-CSM COM RX to Side B OSC-CSM COM TX

2

Side A OSC-CSM LINE TX to Side B OSC-CSM or OPT-BST LINE RX on adjacent node

5

Side B OSC-CSM LINE RX to Side A OSC-CSM or OPT-BST LINE TX on adjacent node

3

Side A OSC-CSM COM TX to Side B OSC-CSM COM RX

6

Side B OSC-CSM LINE TX to Side A OSC-CSM or OPT-BST LINE RX on adjacent node


11.7.6  Amplified or Passive OADM Node Fiber-Optic Cabling

The two sides of the OADM node do not need to be symmetrical. On each side, Cisco TransportPlanner can create one of the following four configurations:

OPT-BST and OPT-PRE

OSC-CSM and OPT-PRE

Only OSC-CSM

Only OPT-BST


Note Amplified OADM nodes contain OPT-PRE cards and/or OPT-BST cards. Passive OADM nodes do not. Both contain add/drop channel or band cards.


The following rules generally apply for OADM node express path cabled connections:

TX ports should only be connected to RX ports.

EXP ports are connected only to COM ports in between AD-xC-xx.x or AD-xB-xx.x cards that all belong to Side B (that is, they are daisy-chained).

EXP ports are connected only to COM ports in between AD-xC-xx.x or AD-xB-xx.x cards that all belong to Side A (that is, they are daisy-chained).

The EXP port of the last AD-xC-xx.x or AD-xB-xx.x card on Side A is connected to the EXP port of the first AD-xC-xx.x or AD-xB-xx.x card on Side B.

The OPT-BST COM RX port is connected to the nearest (in slot position) AD-xC-xx.x or AD-xB-xx.x COM TX port.

The OPT-PRE COM TX port is connected to the nearest (in slot position) AD-xC-xx.x or AD-xB-xx.x COM RX port.

If OADM cards are located in adjacent slots, the TCC2/TCC2P card assumes that they are connected in a daisy-chain between the EXP ports and COM ports as noted previously.

The first Side A AD-xC-xx.x or AD-xB-xx.x card COM RX port is connected to the Side A OPT-PRE or OSC-CSM COM TX port.

The first Side A AD-xC-xx.x or AD-xB-xx.x card COM TX port is connected to the Side A OPT-BST or OSC-CSM COM RX port.

The first Side B AD-xC-xx.x or AD-xB-xx.x card COM RX port is connected to the Side B OPT-PRE or OSC-CSM COM TX port.

The first Side B AD-xC-xx.x or AD-xB-xx.x card COM TX port is connected to the Side B OPT-BST or OSC-CSM RX port.

If a Side A OPT-PRE is present, the Side A OPT-BST or OSC-CSM COM TX port is connected to the Side A OPT-PRE COM RX port.

If a Side B OPT-PRE is present, the Side B OPT-BST or OSC-CSM COM TX port is connected to the Side B OPT-PRE COM RX port.

The following rules generally apply for OADM node add/drop path cabled connections:

AD-xB-xx.x add/drop (RX or TX) ports are only connected to the following ports:

4MD-xx.x COM TX or 4MD-xx.x COM RX ports

Another AD-xB-xx.x add/drop port (a pass-through configuration)

An AD-xB-xx.x add/drop band port is only connected to a 4MD-xx.x card belonging to the same band.

For each specific AD-xB-xx.x card, the add and drop ports for that band card are connected to the COM TX and COM RX ports of the same 4MD-xx.x card.

The AD-xB-xx.x and 4MD-xx.x cards are located in the same side (the connected ports all have the same line direction).

The following rules generally apply for OADM node pass-through path cabled connections:

Pass-through connections are only established between add and drop ports on the same band or channel and in the same line direction.

AD-xC-xx.x or AD-xB-xx.x add/drop ports must be connected to other AD-xC-xx.x or AD-xB-xx.x add/drop ports (as pass-through configurations).

Add (RX) ports must be connected to drop (TX) ports.

4MD-xx.x client input/output ports must be connected to other 4MD-xx.x client input/output ports.

A Side A AD-xB-xx.x drop (TX) port is connected to the corresponding Side A 4MD-xx.x COM RX port.

A Side A AD-xB-xx.x add (RX) port is connected to the corresponding Side A 4MD-xx.x COM TX port.

An Side B AD-xB-xx.x drop (TX) port is connected to the corresponding Side B 4MD-xx.x COM RX port.

An Side B AD-xB-xx.x add (RX) port is connected to the corresponding Side B 4MD-xx.x COM TX port.

Figure 11-51 shows an example of an amplified OADM node with AD-1C-xx.x cards installed.


Note Figure 11-51 is an example. Always install fiber-optic cables based on the Cisco TransportPlanner Internal Connections table for your site.


Figure 11-51 Fibering an Amplified OADM Node

1

Side A DCU TX to Side A OPT-PRE DC RX1

9

Side A AD-1C-xx.x EXP RX to Side B AD-1C-xx.x EXP TX

2

Side A DCU RX to Side A OPT-PRE DC TX1

10

Side B TXP_MR_2.5G DWDM RX to Side B AD-1C-xx.x (15xx.xx) TX

3

Side A OPT-BST COM TX to Side A OPT-PRE COM RX

11

Side B TXP_MR_2.5G DWDM TX to Side B AD-1C-xx.x (15xx.xx) RX

4

Side A OPT-BST COM RX to Side A AD-1C-xx.x COM TX

12

Side B AD-1C-xx.x COM RX to OPT-PRE COM TX

5

Side A OPT-PRE COM TX to Side A AD-1C-xx.x COM RX

13

Side B AD-1C-xx.x COM TX to OPT-BST COM RX

6

Side A AD-1C-xx.x (15xx.xx) RX to Side A TXP_MR_2.5G DWDM TX

14

Side B OPT-PRE COM RX to Side B OPT-BST COM TX

7

Side A AD-1C-xx.x (15xx.xx) TX to Side A TXP_MR_2.5G DWDM RX

15

Side B DCU TX to Side B OPT-PRE DC RX1

8

Side A AD-1C-xx.x EXP TX to Side B AD-1C-xx.x EXP RX

16

Side B DCU RX to Side B OPT-PRE DC TX1

1 If a DCU is not installed, a 4-dB attenuator loop, +/ 1 dB, must be installed between the OPT-PRE DC ports.


Figure 11-52 shows an example of a passive OADM node with two AD-1C-xx.x cards installed.

Figure 11-52 Fibering a Passive OADM Node

1

Side A OSC-CSM COM TX to Side A AD-1C-xx.x COM RX

4

Side A OSC-CSM EXP RX to Side B AD-1C-xx.x EXP TX

2

Side A OSC-CSM COM RX to Side A AD-1C-xx.x COM TX

5

Side B AD-1C-xx.x COM TX to Side B OSC-CSM COM RX

3

Side A OSC-CSM EXP TX to Side B AD-1C-xx.x EXP RX

6

Side B AD-1C-xx.x COM RX to Side B OSC-CSM COM TX


11.7.7  ROADM Node Fiber-Optic Cabling

The following rules generally apply to ROADM node cabling:

The Side A OPT-BST or OSC-CSM COM TX port is connected to the Side A OPT-PRE COM RX port.

The Side A OPT-PRE COM TX port is connected to the Side A 32WSS COM RX port.

The Side A OPT-BST or OSC-CSM COM RX port is connected to the Side A 32WSS COM TX port.

The Side A OPT-BST (if installed) OSC TX port is connected to the Side A OSCM RX port.

The Side A OPT-BST (if installed) OSC RX port is connected to the Side A OSCM TX port.

The Side A 32WSS EXP TX port is connected to the Side B 32WSS EXP RX port.

The Side A 32WSS EXP RX port is connected to the Side B 32WSS EXP TX port.

The Side A 32WSS DROP TX port is connected to the Side A 32DMX COM RX port.

The Side A 40-WSS-C/40-WSS-CE DROP TX port is connected to the Side A 40-DMX-C or 40-DMX-CE COM RX port.

The Side B OPT-BST or OSC-CSM COM TX port is connected to the Side B OPT-PRE COM RX port.

The Side B OPT-PRE COM TX port is connected to the Side B 32WSS COM RX port.

The Side B OPT-BST or OSC-CSM COM RX port is connected to the Side B 32WSS COM TX port.

The Side B OPT-BST (if installed) OSC TX port is connected to the Side B OSCM RX port.

The Side B OPT-BST (if installed) OSC RX port is connected to the Side B OSCM TX port.

The Side B 32WSS DROP TX port is connected to the Side B 32DMX COM RX port.

The Side B 40-WSS-C/40-WSS-CE DROP TX port is connected to the Side B 40-DMX-C or 40-DMX-CE COM RX port.

Figure 11-53 shows an example of an amplified ROADM node with cabling.


Note Figure 11-53 is an example. Always install fiber-optic cables based on the Cisco TransportPlanner Internal Connections table for your site.


Figure 11-53 Fibering a ROADM Node

1

Side A DCU TX to Side A OPT-PRE DC RX1

8

Side A 32WSS EXP RX to Side B 32WSS EXP TX

2

Side A DCU RX to Side A OPT-PRE DC TX1

9

Side B 32DMX COM RX to Side B 32WSS DROP TX

3

Side A OPT-BST COM TX to Side A OPT-PRE COM RX

10

Side B 32WSS COM RX to Side B OPT-PRE COM TX

4

Side A 32WSS COM TX to Side A OPT-BST COM RX

11

Side B 32WSS COM TX to Side B OPT-BST COM RX

5

Side A 32WSS COM RX to Side A OPT-PRE COM TX

12

Side B OPT-BST COM TX to Side B OPT-PRE COM RX

6

Side A 32DMX COM RX to Side A 32WSS DROP TX

13

Side B DCU RX to Side B OPT-PRE DC TX1

7

Side A 32WSS EXP TX to Side B 32WSS EXP RX

14

Side B DCU TX to Side B OPT-PRE DC RX1

1 If a DCU is not installed, a 4-dB attenuator loop, +/-1 dB must be installed between the OPT-PRE DC ports.


11.8  Automatic Node Setup

Automatic node setup (ANS) is a TCC2/TCC2P function that adjusts values of the variable optical attenuators (VOAs) on the DWDM channel paths to equalize the per channel power at the amplifier input. This power equalization means that at launch, all channels have the same amplifier power, independent of the input signal on the client interface and independent of the path crossed by the signal inside the node. This equalization is needed for two reasons:

Every path introduces a different penalty on the signal that crosses it.

Client interfaces add their signal to the ONS 15454 DWDM ring with different power levels.

To support ANS, integrated VOAs and photodiodes are provided in the following cards:

AD-xB-xx.x card express and drop paths

AD-xC-xx.x card express and add paths

4MD-xx.x card add paths

32MUX-O card add paths

32WSS/40-WSS-C/40-WSS-CE/40-WXC-C add and pass through paths

32DMX-O card drop paths

32DMX, 40-DMX-C, 40-DMX-CE card input port

40-MUX-C card output port

40-SMR1-C/40-SMR2-C add, drop, and pass through ports

PSM card input and output ports (both working and protect path)

Optical power is equalized by regulating the VOAs. Based on the expected per channel power, ANS automatically calculates the VOA values by:

Reconstructing the different channel paths.

Retrieving the path insertion loss (stored in each DWDM transmission element).

VOAs operate in one of three working modes:

Automatic VOA Shutdown—In this mode, the VOA is set at maximum attenuation value. Automatic VOA shutdown mode is set when the channel is not provisioned to ensure system reliability in the event that power is accidentally inserted.

Constant Attenuation Value—In this mode, the VOA is regulated to a constant attenuation independent from the value of the input signal. Constant attenuation value mode is set on VOAs associated to aggregated paths.

Constant Power Value—In this mode, the VOA values are automatically regulated to keep a constant output power when changes occur to the input power signal. This working condition is set on VOAs associated to a single channel path.

ANS calculates the following VOA provisioning parameters:

Target attenuation

Target power

After you launch ANS, one of the following statuses is provided for each ANS parameter:

Success - Changed—The parameter setpoint was recalculated successfully.

Success - Unchanged—The parameter setpoint did not need recalculation.

Unchanged - Port in IS state—ANS could not modify the setpoint because the port is in IS state.

Fail - Out of Range—The calculated setpoint is outside the expected range.

Fail - Missing Input Parameter—The parameter could not be calculated because the required provisioning data is unknown or unavailable.

Optical patchcords are passive devices that are modeled by the two termination points, each with an assigned slot and port. If user-provisioned optical patchcords exist, ANS checks if the new connection is feasible according to internal connection rules. If the user connection violates one of the rules, ANS returns a denied message. ANS requires the expected wavelength to be provisioned. When provisioning the expected wavelength, the following rules apply:

The card family generically characterizes the card name, and not the particular wavelengths supported (for example, AD-2C-xx.x for all two-channel OADMs).

At the provisioning layer, you can provision a generic card for a specific slot using CTC or TL1.

Wavelength assignment is done at the port level.

An equipment mismatch alarm is raised when a mismatch between the identified and provisioned value occurs. The default value for the provisioned attribute is AUTO.

ONS 15454 ANS parameters set the values required for the node to operate successfully. Cisco TransportPlanner calculates the ANS parameters based on the requirements for a planned network. Cisco TransportPlanner exports the parameters to an ASCII, NE update file. When the NE update file is imported in CTC, the Provisioning > WDM-ANS > Provisioning tab is populated with the ANS parameters to provision the node for the network. These ANS parameters can be modified. All the ANS parameters are mapped to the physical ports of the cards. ANS parameters can also be manually added or deleted in the Provisioning tab. The ranges for the values of the ANS parameters is shown in Table 11-11. For more information on how to add an ANS parameter, refer to the "Turn Up a Node" chapter in the Cisco ONS 15454 DWDM Procedure Guide.


Note The Provisioning > WDM-ANS > Provisioning tab in CTC is empty if the NE update file is not imported.



Note It is recommended that you use the Cisco TransportPlanner NE Update file to provision the ANS parameters instead of manually adding all the parameters in CTC. ANS provisioning parameters must be manually changed by Cisco qualified personnel only. Setting incorrect ANS provisioning (either as preamplifier or booster input power thresholds) may impact traffic.


Table 11-11 Ranges and Values for the ANS Parameters

ANS Parameter
Range/Value

Thresholds

-50.0 to +30.0 dBm

Amplifier Working Mode

Control Power, Control Gain

Amplifier Per Channel Power

-50.0 to +30.0 dBm

Amplifier Gain

0.0 to 40.0 dB

Amplifier Tilt

-15.0 to +15.0 dB

OSC Power

-24.0 to 0.0 dBm

Raman Ratio

0.0 to 100.0%

Raman Total Power

100 to 450 mW

Power

-30.0 to +50 dBm

WXC Dithering

0 to 33

Min Expected Span Loss

0.0 to 60.0 dB

Max Expected Span Loss

0.0 to 60.0 dB

VOA Attenuation

0 to 30 dB


ANS parameters can be viewed in the node view Provisioning > WDM-ANS > Provisioning tab, as shown in Figure 11-54.

Figure 11-54 WDM-ANS Provisioning

The Provisioning > WDM-ANS > Provisioning tab presents the following information:

Selector—Presents the ANS parameters in a tree view based on physical position. Clicking the + or - expands or collapses individual tree elements. Clicking a tree element displays the element parameters in the table on the right. For example, clicking the node name at the top displays all the node ANS parameters or clicking Slot 1 (OPT-BST) displays the OPT-BST amplifier parameters only. The ANS parameters can be sorted according to physical position.

Parameter—Displays the parameter name.

Value—Displays the parameter value. Values can be modified manually, although manual modification of ANS parameters is not recommended.

Origin—Indicates how the parameter was calculated:

Imported—The value was set by importing the CTP XML file.

Provisioned—The value was manually provisioned.

Automatic—The value is automatically calculated by the system using the Raman provisioning wizard. For more information on how to provision using a wizard, see the "DLP-G468 Configure the Raman Pump Using an Installation Wizard" task in the Cisco ONS 15454 DWDM Procedure Guide.

Note—Displays information for parameters that could not be calculated, that is, parameters with Unknown appearing in the Value column.

11.8.1  Raman Setup and Tuning

Raman amplification occurs in the optical fiber and the consequent Raman gain depends on the characteristics of the span (attenuator presence, fiber type, junctions, etc.). As two Raman pumps at two different wavelengths are used to stimulate the Raman effect, not only is the total signal power calculation significant, but the right mix of power to ensure gain flatness is crucial. These setpoints of the total Raman power and Raman ratio can be configured on the OPT-RAMP-C or OPT-RAMP-CE card in three ways:

Raman installation wizard

CTP XML file

CTC/TL1 interface

For information on how to configure the setpoints on the OPT-RAMP-C or OPT-RAMP-CE card, see the Cisco ONS 15454 DWDM Procedure Guide.

Raman amplification on OPT-RAMP-C or OPT-RAMP-CE cards depends on the optical fiber installed. Therefore, Raman total power and Raman ratio values calculated using the Raman installation wizard via CTC is more accurate than the values provisioned by loading the CTP XML file. For this reason, the value provisioned using the wizard cannot be overridden by the CTP XML file. However, the values provisioned using the wizard or the CTP XML file can be overriden by manually provisioning the parameters.

When the Raman installation is completed, a report of the status of Raman configuration on a node in the OPT-RAMP-C or OPT-RAMP-CE card can be viewed in the Maintenance > Installation tab when you are in card view.

The Installation tab displays the following fields:

User—Name of user who configured the Raman pump.

Date—Date when the Raman pump was configured.

Status

Raman Not Tuned—The OPT-RAMP-C or OPT-RAMP-CE card was provisioned but ANS was not launched.

Tuned by ANS—ANS was run successfully and the basic ANS parameters were applied.

Tuned by Wizard—The Raman installation wizard was run successfully without errors.

Tuned by User Acceptance—The Raman installation wizard was completed with errors and the user accepted the values that the wizard calculated.

Raman is Tuning—The Raman installation wizard is running.

S1Low (dBm)—See Table 11-12.

S1High (dBm)—See Table 11-12.

S2Low (dBm)—See Table 11-12.

S2High (dBm)—See Table 11-12.

Power (mW)—Total Raman power setpoints.

Ratio—Raman pump ratio setpoint.

Gain—Expected Raman gain that the wizard calculated.

Actual Tilt—Expected Raman tilt that the wizard calculated.

Fiber Cut Recovery—Fiber cut has occurred, but restoration of the fiber cut link is pending.

Fiber Cut Date—Date when the fiber cut occurred.

The Raman pump is equipped with two different Raman pumps transmitting powers (P1 and P2) at two different wavelengths 1 and 2. During installation, the two pumps alternatively turn ON and OFF at two different power values. 1 and 2 signals are used as probes at the end of spans to measure Raman gain efficiency of the two Raman pumps separately.

The example in Figure 11-55 shows the Raman gain on an OPT-RAMP-C or OPT-RAMP-CE card in Node B that was measured by setting the wavelength and power measurements as follows:

1=1530.33 nm signal probe at Node A

2=1560.61 nm signal probe at Node A

P1 = 1425 nm power at Node B

P2 = 1452 nm power at Node B

Plow = 100 mW

Phigh = 280 mW

Pmin = 8 mW

Pmax = 450 mW

Figure 11-55 Raman Gain on Node B

The S1low, S1high, S2low, and S2low values in the Maintenance > Installation tab are based on the power values read on the LINE-RX port of Node B.

Table 11-12 Example of Raman Power Measurements

Input
P1
P2
Raman Power at Node B
1=1530.33 nm at Node A

Plow = 100 mW

Pmin = 8 mW

S1low

Phigh = 250 mW

Pmin = 8 mW

S1high

2=1560.61 nm at Node A

Pmin = 8 mW

Plow = 100 mW

S2low

Pmin = 8 mW

Phigh = 250 mW

S2low


11.9  DWDM Functional View

DWDM functional view offers a graphical view of the DWDM cards and the internal connections between them in an MSTP node. The functional view also shows cards and connections for multidegree MSTP nodes (up to eight sides). To navigate to the functional view of a DWDM node, use the following navigational path in CTC when you are in node view:

Provisioning > WDM-ANS > Internal Patchcords > Functional View

An example of the functional view for an eight-sided node is shown in Figure 11-56.

Figure 11-56 Functional View for an Eight-Sided Node

11.9.1  Navigating Functional View

The functional view has two main panes. The upper pane contains a tree view of the shelves and a graphical view of the shelf equipment. The lower pane describes alarms and circuits in a tabular format.

The upper pane in Figure 11-56 is divided into a left pane and a right pane. The left pane shows a tree structure view of the shelf or shelves in the MSTP system. You can expand the tree view of a shelf to show the slot usage in that shelf. The right pane is a graphical view of the sides in the shelf. In the case of Figure 11-56, there are eight sides (A through H). Side A is located as shown in the figure. All of the cards in each side are grouped together.

The meanings of the icons in the upper right corner are as follows:

Select—use this icon to select a graphical element in the graphical view pane.

Patchcord—Use this icon to create an internal patchcord between cards.


Note The Patchcord icon is not functional for Software Release 8.5.


Zoom In/Zoom Out—Use these icons to zoom in or zoom out in the graphical display pane.

Fit to View—Use this icon to have the graphical view fit the space available on your screen.

The bottom pane can be used to display alarms (using the Alarms tab) or Circuits (using the Circuits tab). Clicking the Alarms tab displays the same information as the Alarms tab in the network, node, or card view. Clicking the Circuits tab displays the same information as the Alarms tab in the network, node, or card view.

11.9.2  Using the Graphical Display

This section explains how to use the graphical portion of the display to gather information about the cards and ports.

11.9.2.1  Displaying a Side

Double-click a side to show the details of that side. For example, if you double-click Side A in Figure 11-56, the result is as shown in Figure 11-57.

Figure 11-57 Side A Details

The green arrows in the diagram represent the DWDM optical path within the selected side. The optical path in this instance is summarized as follows:

1. The light enters the OPT-BST card LINE-RX port from the optical span.

2. The path continues out of the OPT-BST card COM-TX port to the COM-RX port of the OPT-PRE card.

3. The OPT-PRE card sends the optical signal out of its COM-TX port to the 40-WXC COM-RX input port.

4. The 40-WXC card sends the signal to be locally dropped out of its DROP-TX port to the 40-DMX/40-DMX-CE card COM-RX port.

5. The 40-DMX/40-DMX-CE card sends the dropped signal out on one of its multifiber push on (MPO) connectors to the block labeled MPO. When you expand the MPO block (double-click it or right-click it and select Down), you will see a muxponder (MUX) card inside the MPO block. One of the eight optical fibers in the MPO cable is connected to the MUX trunk port.

6. The optical signal from the trunk port of the MXP card inside the MPO block enters the 40-MUX card at one of its five MPO connectors.

7. The 40-MUX card sends the optical signal out of its COM-TX port to the ADD-RX port of the 40-WXC card.

8. The added signal from the MXP gets sent out on the COM-TX port of the 40-WXC card to the COM-RX port of the OPT-BST card.

9. Finally, the OPT-BST card sends the optical signal out onto the span from its LINE-TX port.

11.9.2.2  Displaying Card Information

In the functional view graphical pane, you can double-click a card to bring up the usual CTC card view.

You can also move the mouse over a card to display information about the card. For example, when the mouse is placed over the OPT-BST card in Side A, the tooltip text displays sh1/s1 (OPT-BST), indicating that the OPT-BST card for Side A is located in Shelf 1, Slot 1. See Figure 11-58.

Figure 11-58 Side A OPT-BST Card Shelf and Slot Information

11.9.2.3  Displaying Port Information

Move the mouse over a port on a card to display information about the port. For example, when the mouse is placed over the top left port of the 40-MUX card in Side A, the tooltip text displays CARD_PORT-BAND-1-RX, indicating that the 40-MUX port being pointed to is for the first band of wavelengths (wavelengths 1 to 8) to be added into the optical path at the 40-MUX card. These wavelengths come into the 40-MUX card from a transponder (TXP) or muxponder (MXP) on an MPO connector, which contains eight integrated optical fibers. See Figure 11-59.

Figure 11-59 Side A 40-MUX Port Information

11.9.2.4  Displaying Patchcord Information

Move the mouse over a patchcord to see the state of the output and input port associated with that patchcord. See Figure 11-60.

Figure 11-60 Patchcord Input and Output Port State Information

11.9.2.5  Displaying MPO Information

To show the details inside an MPO block, double-click it or right-click it and select Down. When the detailed view is visible, right-click inside the MPO block and select Upper View to collapse the block. When you move the mouse over the MPO block, the associated wavelengths are displayed as a tool tip (see Figure 11-61).

Figure 11-61 MPO Information

11.9.2.6  Alarm Box Information

Within the side display, an alarm box is shown that gives the alarm count for the Critical, Major, and Minor alarms that affect that side. This alarm summary is only for the side, and is different from the alarms under the Alarms tab, where all of the alarms for the system are summarized. If an alarm under the Alarms tab appears that has to do with Side A, for example, only the appropriate alarm count in the Alarm box for Side A is incremented. The alarm counts in the Alarm boxes for the other nodes (B through H) are not incremented. In the graphical view of a side, the card icon or port icon changes color to reflect the severity of an alarm associated with the card (red, orange, or yellow). The color of the MPO block reflects the color of highest alarm severity for the elements in the MPO block.

11.9.2.7  Transponder and Muxponder Information

All of the TXP and MXP cards connected with patchcords are grouped together under the MPO icon. In the node shown in Figure 11-56, there is an MXP card in Side A that is connected to the 40-MUX card and to the 40-DMX/40-DMX-CE card. The MXP card is connected through the 40-MUX card to the add port on the 40-WXC card and it is also connected through the 40-DMX/40-DMX-CE card to the drop port on the 40-WXC card. To view the connections to the MXP card from the 40-MUX card, double-click the MPO icon. Figure 11-62 shows the MPO icon before double-clicking it and Figure 11-63 shows the result after double-clicking it.


Note In the case of a protected TXP (TXPP) or MXP (MXPP) card, the card icon has a label indicating the active trunk and the protected trunk.


Figure 11-62 Side A MPO Connection to an MXP Before Double-Clicking

Figure 11-63 Side A MPO Connection to an MXP After Double-Clicking

11.9.2.8  Changing the Views

When you right-click inside of a side view, a shortcut menu allows you to do the following (see Figure 11-64):

Fit to View—Fits the side view into the available display space.

Delete Side—Deletes the selected side.

Rotate Left—Rotates the side 90 degrees counterclockwise (all connections are maintained).

Rotate Right—Rotates the side 90 degrees clockwise (all connections are maintained).

Horizontal Flip—Flips the side horizontally (all connections are maintained).

Vertical Flip—Flips the side vertically (all connections are maintained).

After you have selected Fit to View for a side, you can right-click in the side view to bring up a new menu with the following selections (see Figure 11-65):

Go to Upper View—Returns to the previous view.

Perform AutoLayout—Optimizes the placement of the cards and the connections between them.

Figure 11-64 Side A View Options

Figure 11-65 Side A View Options (after Selecting Fit to View)

11.9.2.9  Selecting Circuits

When the Circuits tab is selected, the circuits for the functional view are shown. The patchcord lines in the graphical display are normally black in color. A patchcord line becomes green only when you select a circuit associated with the patchcord that carries the selected circuit.

11.9.2.10  Displaying Optical Path Power

To show the optical power present in an optical path, move the mouse over the desired optical path (green line). A tooltip shows the power along the optical path in dBm (see Figure 11-66).

Figure 11-66 Optical Path Power

11.10  DWDM Network Functional View

The DWDM Network Functional View (NFV) displays a graphical representation of the circuit connections, optical power, and alarms in the DWDM network. The NFV allows you to view the circuit connections and flow of data at the network level. The NFV also helps to find an alternate network path if there is a loss of signal in the network.

The NFV offers dual options to view the network:

Graphical view—Displays the circuit connections, optical power, and alarms of a circuit through a in a graphical representation. To view the graphical display of the circuit connections, click dB, SL, PV from the toolbar. For more information refer to Using the Graphical Display.

Viewing the circuit details in tabular format—The circuit connections, optical power, and alarms of a circuit are displayed in a tabular format (seen in the left pane of the Network Functional View). For more information refer to Selecting the Circuit.

For information on how to view optical power values and alarms of the circuit selected in the Network Functional View, see the "DLP-G231 View Optical Power Values and Alarms Using the Network Functional View" task in the Cisco ONS 15454 DWDM Procedure Guide.

11.10.1  Navigating Network Functional View

This section explains how to navigate to the network functional view. To navigate to the NFV, go to the network view in the CTC and click the FV button on the toolbar. The DWDM Network Functional View window opens.

The NFV is similar to the DWDM functional view in its graphical layout and behavior at the node level. For additional information, refer to the "DWDM Functional View" section.

The network functional view has two main panes (Figure 11-67):

Left pane—Is divided into an upper pane and a lower pane. The upper pane has three tabs that are listed in Table 11-13, and the lower pane displays a detailed view of the selected circuit in the network.

Right pane—Displays the graphical view of all the nodes and devices in the network.

Table 11-13 Circuits, Optical Power, and Alarms tab

Tab
Description

Circuits

Displays the lists of circuits for the nodes present in the network.

Optical Power

Displays the optical link and span loss of the circuits. This tab lists the estimated aggregated power-in and power-out of all the internal patchcords for the nodes that have the functional view open.

Alarms

Displays the alarms of an affected circuit. If a node has alarms that is not part of the selected circuits, then the alarms are not listed in the table, but the node is colored in the graphical view (right pane).


Figure 11-67 DWDM Network Functional View

11.10.2  Using the Graphical Display

This section explains how to use the graphical display to gather information on circuits, optical power, and alarms for the nodes.

To enlarge a node, click on the network functional view graph and Press F2 on the key board. The node opens in a double zoom mode and you can read the power information in the zoom out view. Click F2 again to zoom-in or return to the normal view. Additionally, to zoom-in and zoom-out the graph on the network functional view, press the Ctrl key and scroll up and down with the scroll wheel on your mouse.


Note To open and view the nodes in the network functional view, right-click the node > Open Node FV. Or double-click on the Node to open the node FV. To navigate to the node level, right-click FV > Node FV. To zoom in and zoom out of the open node, press the Ctrl key and scroll up and down with the scroll wheel on your mouse.


11.10.2.1  Displaying Optical Power

The toolbar has the following buttons that displays the optical power information of the circuits:

dB (Power)—Click the dB button on the toolbar to display the optical power information of the circuits. The optical power in the optical path in dBm is displayed.
You can view the aggregated power only for those nodes that have the FV open. To open the node FV, right-click the node and choose Open Node FV. You can also view the aggregated power of the ports when no circuit is selected. It also shows the estimated per channel power of the ports of the selected circuit.

SL (Span Loss)—Click the SL button to see the loss of signal of the desired span.

PV (Patch Cord Verification)—Click the PV button to display the insertion loss of the patch cord. The PV calculates the input and output power of the patch cord. You can view the insertion loss of the patchchord only for those nodes that have the FV open. To open the node FV, right-click the node and choose Open Node FV. The insertion loss should not exceed 2dBm.


Note Click Refresh on the toolbar, to refresh the optical power and span loss information. The optical power and span loss information is calculated and it refreshes the graphical display and the optical power table.


11.10.2.2  Selecting the Circuit

The Circuit tab in the NFV allows you to view the available circuits in the network. Click the Circuit tab to view the list of circuits in the selected network. Choose the circuit from the list to view the circuit level information. A graphical display of the selected circuit and the impacted span is visible in the map. Additionally, you can view the general information (type, source, and destination), status (IS,OOS [ANSI] or unlocked, locked [ETSI]), and physical connection details (wavelength, direction, and span) of the selected circuit.

To view the optical power and alarms detail of a circuit, Click Circuit and select the Circuit Name from the list to view the following details:

Optical Power—To view the optical power of the selected circuit, click the Optical Power tab. You can view the optical link status and the span loss of the selected circuit.

Alarms—To view the Alarms of the selected circuit, click the Alarms tab. If a card has one or more alarms (that is part of the selected circuit), the node turns to either yellow or red, depending on the severity of the alarm. The alarm in red indicates a major alarm and yellow indicates a minor alarm. If there is an alarm present in the card that is not part of the selected circuit, then the node appears gray.


Note At the circuit level, you can view both the node and network-level information.


11.10.2.3  Exporting Reports

You can also export the NFV reports of circuit level information in HTML or JPEG format. The export operation creates two files, an HTML and a JPEG format of the NFV information. The .jpg file provides a graphical representation of the site layout. For more information on exporting the reports, see the "DLP Export Network Functional View Reports" task in the Cisco ONS 15454 DWDM Procedure Guide.

11.11  Non-DWDM (TDM) Networks

Non-DWDM (TDM) Networks take synchronous and asynchronous signals and multiplexes them to a single higher bit rate for transmission at a single wavelength over fiber. When the node is configured as a Non-DWDM Network, the supported MSTP cards — amplifiers, transponders, and muxponders, are used in the standalone mode. MSTP applications like Circuit Provisioning, NLAC and APC are not supported in amplified TDM networks. For more information on how to configure a node as a Non-DWDM network, see the "NTP-G320 Configure the Node as a Non-DWDM Network" section in "Turn Up a Node" chapter in the Cisco ONS 15454 DWDM Procedure Guide.

When the node is configured as a Not-DWDM network, all the amplifiers are configured by default with the following values:

Working mode = Control Gain

Channel Power Ref. = +1dBm.

Booster(LINE) amplifiers enable optical safety when used in Non-DWDM. ALS configuration is set to "Auto Restart" by default. A manual restart request is therefore needed to turn up the bidirectional link, in addition with an appropriated cabling (bi-directional) of LINE TX/RX ports.

In NOT-DWDM mode, you must configure significant optical parameters and thresholds before launching the ANS application. For information on how to configure the amplifier, see the "DLP-G693 Configure the Amplifier" section in "Turn Up a Node" chapter in the Cisco ONS 15454 DWDM Procedure Guide. For information on how to configure the PSM behavior, see the "DLP-G694 Configure the PSM" section in "Turn Up a Node" chapter in the Cisco ONS 15454 DWDM Procedure Guide.

When the ANS application is launched, amplifier ports move into IS state and Gain Setpoint is automatically calculated by the card, after initial APR cycle. Gain Setpoint must be equal to MAX [Min Gain Setpoint of the card ; (Power Ref-Pinput)]; where Pinput is the optical power value at the ingress port (COM-RX) of the amplification stage.