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This module describes how to configure Synchronous Optical NETwork (SONET) on 1-Port OC192/STM-64 or 8-Port OC3/12/48/STM-1/-4/-16 Module. SONET defines optical signals and a synchronous frame structure for multiplexed digital traffic. SONET equipment is generally used in North America.
The transport network using SONET provides much more powerful networking capabilities than existing asynchronous systems.
SONET is a set of standards that define the rates and formats for optical networks specified in GR–253–CORE. SONET is based on a structure that has a basic frame format and speed. The frame format used by SONET is the Synchronous Transport Signal (STS), with STS-1 as the base-level signal at 51.84 Mbps. An STS-1 frame can be carried in an OC-1 signal.
SONET has a hierarchy of signaling speeds.
Rate combinations on 1-Port OC192/STM-64 or 8-Port OC3/12/48/STM-1/-4/-16 Module are 0-1, 2-3, 4-5, 6-7 and 8. A maximum rate of 4XOC-48 is supported on ports 0-7.
4XOC-48 can be configured in any one port of a port-group and other port is not used.
Only 16 BERT Patterns can be configured at a time on 1-Port OC192/STM-64 or 8-Port OC3/12/48/STM-1/-4/-16 Module.
VT1.5 VT cannot be configured if VT1.5 T1/DS1 is configured with the same KLM value.
PMON fields are not supported for VT1.5 VT and DS3 or T3.
PMON Far-end parameters are not supported.
Total available bandwidth for 1-Port OC192/STM-64 or 8-Port OC3/12/48/STM-1/-4/-16 Module is 10G.
rate OC3| OC12| OC48| OC192The following table shows the bandwidth used by different rates:
|
Rate |
Bandwidth |
|---|---|
|
OC-3 |
155.52 Mbps |
|
OC-12 |
622.08 Mbps |
|
OC-48 |
2.4 Gbps |
|
OC-192 |
9.6 Gbps |
Restrictions for Clock Source Configuration
You should configure the clock source line and network-clock sync together to receive the clock from a remote port that is connected to the SONET port.
SONET Switching is achieved on optical interface modules by circuit emulation. Circuit Emulation (CEM) is a way to carry TDM circuits over packet switched network. CEM embeds TDM bits into packets, encapsulates them into an appropriate header and then sends that through Packet Switched Network (PSN). The receiver side of CEM restores the TDM bit stream from packets.
Modes of CEM:
Structure Agnostic TDM over Packet (SAToP) (RFC 4553) – Structure-Agnostic TDM over Packet (SAToP) mode is used to encapsulate T1/E1 or T3/E3 unstructured (unchannelized) services over packet switched networks. In SAToP mode, the bytes are sent out as they arrive on the TDM line. Bytes do not have to be aligned with any framing.
In this mode, the interface is considered as a continuous framed bit stream. The packetization of the stream is done according to IETF RFC 4553. All signaling is carried transparently as a part of a bit stream.
Circuit Emulation Service over Packet (CEP) (RFC 4842) - CEP mode is used to encapsulate SONET payload envelopes (SPEs) like VT1.5 or VT2 or STS-1 or STS-Nc over packet switched networks. In this mode, the bytes from the corresponding SPE are sent out as they arrive on the TDM line. The interface is considered as a continuous framed bit stream. The packetization of the stream is done according to IETF RFC 4842.
|
Mode |
CEM |
Ports |
|---|---|---|
|
STS-48C |
CEP |
OC-48, OC-192 |
|
STS-12C |
CEP |
OC-12, OC-48, OC-192 |
|
STS-3C |
CEP |
OC-12, OC-48, OC-192 |
|
STS-1 |
CEP |
OC-3, OC-12, OC-48, OC-192 |
|
DS3 |
SAToP |
OC-3, OC-12, OC-48, OC-192 |
|
DS3-T1 |
SAToP |
OC-3, OC-12, OC-48, OC-192 |
|
VT 1.5 |
CEP |
OC-3, OC-12, OC-48, OC-192 |
|
VT DS1 |
SAToP |
OC-3, OC-12, OC-48, OC-192 |
Each level of the SONET hierarchy terminates its corresponding fields in the SONET payload, as follows:
A section is a single fiber run that can be terminated by a network element (Line or Path) or an optical regenerator.
The main function of the section layer is to properly format the SONET frames, and to convert the electrical signals to optical signals. Section Terminating Equipment (STE) can originate, access, modify, or terminate the section header overhead.
Line-Terminating Equipment (LTE) originates or terminates one or more sections of a line signal. The LTE does the synchronization and multiplexing of information on SONET frames. Multiple lower-level SONET signals can be mixed together to form higher-level SONET signals. An Add/Drop Multiplexer (ADM) is an example of LTE.
Path-Terminating Equipment (PTE) interfaces non-SONET equipment to the SONET network. At this layer, the payload is mapped and demapped into the SONET frame. For example, an STS PTE can assemble 25 1.544 Mbps DS1 signals and insert path overhead to form an STS-1 signal.
This layer is concerned with end-to-end transport of data.
A standard STS-1 frame is nine rows by 90 bytes. The first three bytes of each row represent the Section and Line overhead. These overhead bits comprise framing bits and pointers to different parts of the SONET frame.
There is one column of bytes in the payload that represents the STS path overhead. This column frequently "floats" throughout the frame. Its location in the frame is determined by a pointer in the Section and Line overhead.
The combination of the Section and Line overhead comprises the transport overhead, and the remainder is the SPE.
For STS-1, a single SONET frame is transmitted in 125 microseconds, or 8000 frames per second. 8000 fps * 810 B/frame = 51.84 Mbs, of which the payload is roughly 49.5 Mbs, enough to encapsulate 28 DS-1s, a full DS-3, or 21 CEPT-1s.
An STS-3 frame is nine rows by 270 bytes. The first nine columns contain the transport overhead section, and the rest is SPE. For both STS-3 and STS-3c, the transport overhead (Line and Section) is the same.
For an STS-3 frame, the SPE contains three separate payloads and three separate path overhead fields. In essence, it is the SPE of three separate STS-1s packed together, one after another.
For more information on Section Overhead, Line Overhead, and Path Overhead, refer the following:
The following parameters affect SONET configuration at the line and section levels:
 Note |
1 byte, 16 bytes, and 64 bytes are the supported values for J0. |
S1S0 — Sets the SS bits value of the H1 byte in the SONET line overhead.
Loopback — Sets a loopback to test the SONET port.
AIS-Shut — Configures the SONET port to send the Alarm Indication Signal (AIS) at shutdown.
Shut — Disables an interface.
lias —Enables line alarm indication signal.
lrdi — Enables line remote defect indication signal.
pais — Enables path alarm indication signal.
plop — Enables loss of pointer failure signal for a path.
pplm — Enables path payload mismatch indication.
prdi — Enables path remote defect indication signal.
sd-ber — Sets Signal Degrade BER threshold.
line —The link uses the recovered clock from the line.
internal — The link uses the internal clock source. This is the default setting.
Bit-Error Rate Testing (BERT) is used for analyzing quality and for problem resolution of digital transmission equipment. BERT tests the quality of an interface by directly comparing a pseudorandom or repetitive test pattern with an identical locally generated test pattern.
The BERT operation is data-intensive. Regular data cannot flow on the path while the test is in progress. The path is reported to be in alarm state when BERT is in progress and restored to a normal state after BERT has been terminated.
The supported BERT patterns are 2^15, 2^20, 2^23, all 0s and all 1s.
Line - Supports BERT in TDM direction.
System - Supports BERT in PSN direction.
Twenty-eight VTs make up one STS-1. Three STS-1s made up an STS-3 and so on. Any one byte within the STS frame has a direct relationship to a base VT that helps to make up the STS.
A lower-case "c" in the STS rate stands for "concatenated", and indicates that the interface hardware is not channelized. Examples of concatenated interfaces are STS-3c and STS-12c.
The STS-1s may be concatenated into sets of 3 or 12 or 24 or 48 or 192 to form STS-3c, STS-12c, and so on. The STS-1s may be combined only at specific STS-n boundaries within an OC port.
The following parameters affect SONET configuration at the path level:
BERT — Starts the BERT test.
Clock — Specifies the clock source for a path.
Exit — Exits from SONET path configuration mode.
Loopback — Sets the entire path in the loopback mode.
Mode — Specifies the path operation mode.
No — Negates a command or sets its defaults.
Overhead — Configures SONET path overhead flags.
Shutdown — Disables the SONET path.
Threshold — Sets the path BER threshold values.
vtg — Sets the VT-15 configuration.
A channelized SONET interface is a composite of lower-speed STS streams. However, a channelized SONET interface maintains the streams as independent frames with unique payload pointers. The frames are simply multiplexed before transmission to increase the carrying capacity of the physical fiber. This process is similar to multiplexing 24 digital signal level 0 channels into a DS1 or multiplexing 28 DS1 streams into a DS3.
The following parameters affect SONET T1 configuration:
BERT — Starts the BERT test.
Clock — Specifies the clock source for T1 interface.
Description — Specifies the description of the controller.
Framing — Specifies the type of a framing on T1 interface.
Loopback — Sets the T1 interface in the loopback mode.
Shutdown — Disables the T1 interface.
The following parameters affect SONET T3 configuration:
Clock — Specifies the clock source for T3 link.
Description — Specifies the description of the controller.
Framing — Specifies the type of a framing on T3 interface.
Loopback — Sets the T3 link in the loopback mode.
Shutdown — Disables the T3 interface.
The following parameters affect SONET VT configuration:
BERT — Starts the BERT test.
CEM Group — Specifies the time slots for CEM group mapping.
Clock — Specifies the clock source for VT.
Description — Specifies the description of the controller.
Loopback — Sets the VT in the loopback mode.
Overhead — Configures VT line path overhead flags.
Shutdown — Disables the VT interface.
Threshold — Configures the VT threshold values.
Automatic protection switching (APS) is a protection mechanism for SONET networks that enables SONET connections to switch to another SONET circuit when a circuit failure occurs. A protection interface serves as the backup interface for the working interface. When the working interface fails, the protection interface quickly assumes its traffic load.
The SONET protection schemes comply with GR-253 and ITU-T G.783. It allows Optical Interface Module to work seamlessly as SONET Add or Drop Multiplexers (ADMs). The implementation of the above protection schemes allows a pair of SONET lines or paths to be configured for line or path redundancy. In the event of a fiber cut, the active line or path switches automatically to the standby line or path up to 60 milliseconds (2/5/10 millisecond for holdover and 50 millisecond switchovers).
Optical Interface Module supports the following SONET protection switching schemes:
Linear Bidirectional 1+1 APS
Linear Unidirectional 1+1 APS
In the 1+1 architecture, there is one working interface (circuit) and one protection interface, and the same payload from the transmitting end is sent to both the receiving ends. The receiving end decides which interface to use. The line overhead (LOH) bytes (K1 and K2) in the SONET frame indicate both status and action.
The protection interfaces need to be configured with an IP address of the chassis that has the working interface, using APS commands. The APS Protect Group Protocol, which runs on top of UDP, provides communication between the process controlling the working interface and the process controlling the protection interface. Using this protocol, interfaces can be switched because of a chassis failure, degradation or loss of channel signal, or manual intervention. In bidirectional mode, the receive and transmit channels are switched as a pair.
Two SONET connections are required to support APS.
Non-revertive option — When the signal fails, the software switches to the protection line and does not automatically revert back to the working line. This is the default option.
SONET PW (SAToP or CEP)
SONET local connect
The following lists the benefits of APS:
There is no visibility that a failure has occurred beyond the network element in which it is residing; other nodes are not affected by the failure.
Implementation of APS guards a network against complex restarts and resynchronizations since failures are isolated to a local device.
With APS, the effect of a failure is greatly minimized and a fast switchover guarantees minimal effect on the network.
SONET linear APS 1+1 provides protection against both fiber cuts and front card or back card failures. APS 1+1 requires a redundant protection line for every working line. The traffic is simultaneously carried by the working and the protection lines. Hence, the receiver that terminates the APS 1+1 should select the traffic from one of the lines and continue to forward the traffic. APS 1+1 provides protection in unidirectional and bi-directional modes:
Bi-directional Protection: The receiving end switches from working to protection line by coordinating at the transmit end.
In the above figure, two devices are connected to provide APS 1+1 bi-directional protection. The highlighted one is the working line and the other is the protection line. The traffic is transmitted on both working and protection lines and received only on one line.
In a scenario where you encounter a fiber cut,
There is a cable cut in the working line. So, the device 2 receives a Loss of Signal (LOS) on working line.
Device 2 starts generating K2 byte and sends it to the Device 1 over the protection line.
Device 1 receives the K2 byte and reacts on the receiving K2 byte.
Device 1 starts sending K1 byte to the Device 2 on the protection line.
Device 1 starts sending K2 byte to Device 2 on the protection line.
Device 2 receives the K1/K2 byte and starts receiving the data from protection line. The protection line now acts as the active line.
Device 2 sends K2 byte over the new active line to Device 1 . Device 1 receives this signal and starts accepting the data from this new active line.
In the above figure, two devices are connected to provide APS 1+1 unidirectional protection. The figure shows a working line and a protection line. The traffic is transmitted on both working and protection line and received only on one line.
In a scenario where you encounter a fiber cut,
Device 1 receives a LOS on RX working line.
Device 2 detects LOS and starts receiving the data from the protection line. The protection line now becomes the active line.
Device 1 receives the K2 byte and knows about switching event on device 2.
A Unidirectional Path Switching Ring (UPSR) is a unidirectional network with two rings, one ring used as the working ring and the other as the protection ring. The same signal flows through both rings, one clockwise and the other counterclockwise. It is called UPSR because monitoring is done at the path layer. A node receives two copies of the electrical signals at the path layer, compares them, and chooses the one with the better quality. If part of a ring between two ADMs fails, the other ring still can guarantee the continuation of data flow. UPSR, like the one-plus-one scheme, has fast failure recovery.
UPSR Path Protection is supported at VT level and STS level.
Once a signal fail condition or a signal degrade condition is detected, the hardware initiates an interrupt to software that switches from the working path to the protection path. Non-revertive options are valid for UPSR path protection.
Note |
1X OC-192 and 8X OC-48 interface modules only supports the non-revertive option. The non-revertive option is the default mode. |
The below table gives the maximum number of path level circuits supported in each mode.
|
Modes |
Supported Scale |
|---|---|
|
VT 1.5 |
84 |
|
STS-1 |
48 |
|
STS 3c |
16 |
|
STS 12c |
4 |
|
STS 48c |
1 |
SONET local connect and xconnect are supported at VT15 CEP, STS-1c, STS-3c, STS-12c, and STS-48c levels. UPSR is also supported on TDM endpoints that are mapped to a pseudowire. T1 SAToP, T3 SAToP, and CT3 are not supported on an UPSR ring or in other words, local connect and xconnect of T1, T3, and CT3 circuits to UPSR are not supported.
Protection Group Configuration:
enable
configure terminal
protection-group 401 type STS48c
controller protection-group 401
type STS48c
cem-group 19001 cep
end
UPSR Work Path Configuration:
enable
configure terminal
controller MediaType 0/3/6
mode sonet
controller sonet 0/3/6
rate oc48
sts-1 1 - 48 mode sts-48c
protection-group 401 working
endUPSR Protect Path Configuration:
enable
configure terminal
controller MediaType 0/12/6
mode sonet
controller sonet 0/12/6
rate oc48
sts-1 1 - 48 mode sts-48c
protection-group 401 protect
endUse the show protection-group command to verify UPSR configuration:
show protection-group
PGN Type Working I/f Protect I/f Active Status
-------------------------------------------------------------------------------
401 STS48C SONET0/3/6.1-48 SONET0/12/6.1-48 W A
-------------------------------------------------------------------------------
Status legend:D=Deleted FO=Force SF=SignalFailure SD=SignalDegrade
FL=Fail M=Manual L=Lockout C=Clear A=Auto
(W)=working, (P)=protect
SONET equipment detects events and alarms at each of SONET's three layers — section, line and path. Typically, a SONET chassis sends alarms both upstream and downstream in order to notify other devices of the problem condition.
SONET alarm surveillance uses two terms:
State—Condition that is reported or detected. A SONET chassis enters a state when the chassis detects the occurrence of an event. A SONET chassis exits that state when the chassis no longer detects the event.
Indication—Prompted by a change of state. This indicates the presence of a condition. This document discusses the Alarm Indication Signal (AIS), and Remote Defect Indicator (RDI).
The interface of active alarm or defect is maintained in a down/down state. The process used to troubleshoot down/down SONET interfaces is similar to that for digital interfaces, such as T1 and T3.
The following section alarms are supported:
LOS — Loss of Signal
LOF — Loss of Frame
SEF — Severely Error Frame
The following line alarms are supported:
AIS-L — Line AIS
REI-L — Line Remote Error Indication
RDI-L — Line Remote Defect Indication
B2 — Line BIP Error (SF/SD)
TCA for B2
The following path alarms are supported:
AIS-P — STS Path AIS
LOP-P — STS Path Loss of Pointer
B3 (SF/SD) — STS Path BIP Error
UNEQ-P — STS Path unequipped
REI-P — STS Path Remote Error
RDI-P — STS Path Remote Defect Indication
PLM-P — STS path Payload Label Mismatch
LOM — Loss of MultiFrame
TCA for B3
The following VT alarms are supported:
AIS-V — VT Path AIS
LOP-V — VT Loss of Pointer
V-BIP (SF/SD) — VT Path BIP error
UNEQ-V — VT Path Unequipped
REI-V — VT Path Remote Error
RDI-V — VT Path Remote Defect Indication
PLM-V — VT path Payload Label Mismatch
TCA for VT Level BIP
The following T1 alarms are supported:
LOS — DS1/E1 Line loss of Signal
AIS — DS1/E1 Path Alarm Indication Signal
AIS-CI — DS1/E1 Path Alarm Indication Signal Customer Installation
LOF — DS1/E1 Path Loss of Frame
RDI/RAI — Remote Defect Indication or Remote Alarm Indication
RAI-CI — Remote Alarm Indication Customer Installation
TCA for Line and Path DS1
The following T3 or path alarms are supported:
LOS — DS3/E3 Line Loss of Signal
OOF — DS3/E3 Path Loss of Frame
SEF — DS3/E3 Path Severely Errored Frame
AIS — DS3/E3 Path Alarm Indication Signal
SEF/AIS-FE — Far End SEF/AIS
TCA for Line and Path DS3
Typically, a failure condition detected by a SONET chassis results in one or more error conditions sent both upstream and downstream on the network. An AIS is sent in order to alert downstream chassis of a problem and in order to prevent consequential downstream failures or alarms from being raised.
Note |
To use the above features, you need to apply a valid license. |
You must select the MediaType controller to configure and enter the controller configuration mode.
You must configure the controller as a SONET port.
To configure MediaType Controller, use the following commands:
enable
configure terminal
controller MediaType 0/5/0
mode sonet
endTo configure SONET ports, use the following commands:
enable
configure terminal
controller MediaType 0/5/0
mode sonet
controller sonet 0/5/0
rate OC12
endThis section describes how to manage and monitor SONET.
To configure line and section overhead, use the following commands:
enable
configure terminal
controller MediaType 0/5/0
mode sonet
controller sonet 0/5/0
overhead s1s0 2
overhead j0 tx length 1-byte
endNote |
To restore the system to its default condition, use the no form of the command. |
To configure line and section threshold, use the following commands:
enable
configure terminal
controller sonet 0/5/0
threshold b2-tca 3
endNote |
To restore the system to its default condition, use the no form of the command. |
enable
configure terminal
controller sonet 0/5/0
threshold b2-tca 3
endNote |
To restore the system to its default condition, use the no form of the command. |
To configure loopback, use the following commands:
enable
configure terminal
controller sonet 0/5/0
loopback local
endNote |
To restore the system to its default condition, use the no form of the command. |
To configure AIS-Shut, use the following commands:
enable
configure terminal
controller sonet 0/5/0
ais-shut
endNote |
The no ais-shut command will not send AIS. |
To configure Shut, use the following commands:
enable
configure terminal
controller sonet 0/5/0
shutdown
endNote |
Use the no shutdown command to disable the interface. |
To configure alarm reporting, use the following commands:
enable
configure terminal
controller sonet 0/5/0
alarm-report b2-tcs
endNote |
To restore the system to its default condition, use the no form of the command. |
To configure clock, use the following commands:
enable
configure terminal
controller MediaType 0/5/0
mode sonet
controller sonet 0/5/0
clock source line
endNote |
The default mode is internal. |
Note |
To restore the system to its default condition, use the no form of the command. |
Configuring Network-Clock SONET
To configure network-clock SONET, use the following commands:
enable
configure terminal
network-clock input-source 1 controller sonet 0/5/0
endTo configure STS-1 modes, use the following commands:
enable
configure terminal
controller sonet 0/5/0
sts-1 1
mode vt-15
endNote |
|
Note |
To restore the system to its default condition, use the no form of the command. |
To configure DS1/T1 CT3 mode of STS-1, you can configure the T1 link using the following steps:
enable
configure terminal
controller sonet 0/5/0
sts-1 1
mode ct3
t1 1 clock source internal
t1 1 framing unframed
endNote |
To restore the system to its default condition, use the no form of the command. |
To configure STS-Nc - contiguous concatenation, use the following commands:
enable
configure terminal
controller sonet 0/5/0
sts-1 1-3 mode sts-3c
endNote |
To restore the system to its default condition, use the no form of the command. |
Note |
To configure STS-3c or STS-12c, use the numbers as multiples for 3 or 12, respectively. |
This section describes the configuration of APS.
To configure bi-directional ACR (SONET Framing), use the following commands:
enable
configure terminal
controller sonet 0/5/0
clock source internal
aps group acr 1
aps working 1
exit
controller sonet 0/4/0
aps group acr 1
aps protect 1 10.7.7.7
endNote |
To restore the system to its default condition, use the no form of the command. |
Note |
When the aps adm command is not used, the LOS is detected on active port and the L-AIS is transmitted to the remote-end to force APS switchover. This is similar to bi-directional APS mode. 'When the aps adm command is used, the ports are in strict unidirectional mode. When the LOS is detected on active port, the L-AIS is suppressed and behaves in a strict uni-directional mode. |
To configure unidirectional ACR (SONET Framing), use the following commands:
enable
configure terminal
controller sonet 0/5/0
clock source internal
aps group acr 1
aps working 1
aps unidirectional
exit
controller sonet 0/4/0
aps group acr 1
aps protect 1 10.7.7.7
aps revert 3
aps adm
endNote |
To restore the system to its default condition, use the no form of the command. |
Router# show acr group
ACR Group Working I/f Protect I/f Currently Active Status
--------------------------------------------------------------------------
1 SONET 4/1/0 SONET 3/1/0 SONET 4/1/0 Router# show acr group 1 detail cem
ACR Group Working I/f Protect I/f Currently Active Status
--------------------------------------------------------------------------
CE1 CEM0/3/0 CEM0/12/1 CEM0/3/0
CEM CKT Details
Cktid State on Working State on Protect
1 Enable Success Enable Success
Router##show running-config | sec ACR
controller SONET-ACR 1
framing sonet
!
sts-1 1
mode vt-15
vtg 1 vt 1 cem-group 1 cep
!
sts-1 2
!
sts-1 3
interface CEM-ACR1
no ip address
cem 1
!
Router# show ip interface brief | i Loopback
Loopback0 22.22.22.22 YES NVRAM up up Router# show cem circuit
CEM Int. ID Ctrlr Admin Circuit AC
--------------------------------------------------------------
CEM-ACR1 1 UP UP Active UP
CEM-ACR1 2 UP UP Active UP
CEM-ACR1 3 UP UP Active UP
CEM-ACR1 4 UP UP Active UP
CEM-ACR1 5 UP UP Active UP
CEM-ACR1 6 UP UP Active UP
CEM-ACR1 7 UP UP Active UP
CEM-ACR1 8 UP UP Active UP Router# #show cem circuit interface cem-acr 1 1
CEM-ACR1, ID: 1, Line: UP, Admin: UP, Ckt: ACTIVE
Controller state: up, T1/E1 state: up
Idle Pattern: 0xFF, Idle CAS: 0x8
Dejitter: 6 (In use: 0)
Payload Size: 192
Framing: Unframed
CEM Defects Set
None
Signalling: No CAS
RTP: Configured, RTP-HDR Compression: Disabled
Ingress Pkts: 8186065 Dropped: 0
Egress Pkts: 8186065 Dropped: 0
CEM Counter Details
Input Errors: 0 Output Errors: 0
Pkts Missing: 0 Pkts Reordered: 0
Misorder Drops: 0 JitterBuf Underrun: 0
Error Sec: 0 Severly Errored Sec: 0
Unavailable Sec: 0 Failure Counts: 0
Pkts Malformed: 0 JitterBuf Overrun: 0
Generated Lbits: 0 Received Lbits: 0
Generated Rbits: 0 Received Rbits: 0
Router# sh mpls l2 vc 1 det
Local interface: CE1 up, line protocol up, SATOP T1 1 up
Destination address: 2.2.2.2, VC ID: 1, VC status: up
Output interface: Te0/8/0, imposed label stack {100}
Preferred path: not configured
Default path: active
Next hop: 31.1.1.2
Create time: 02:48:15, last status change time: 02:47:26
Last label FSM state change time: 02:47:26
Signaling protocol: LDP, peer 2.2.2.2:0 up
Targeted Hello: 1.1.1.1(LDP Id) -> 2.2.2.2, LDP is UP
Graceful restart: not configured and not enabled
Non stop routing: configured and enabled
Status TLV support (local/remote) : enabled/supported
LDP route watch : enabled
Label/status state machine : established, LruRru
Last local dataplane status rcvd: No fault
Last BFD dataplane status rcvd: Not sent
Last BFD peer monitor status rcvd: No fault
Last local AC circuit status rcvd: No fault
Last local AC circuit status sent: No fault
Last local PW i/f circ status rcvd: No fault
Last local LDP TLV status sent: No status
Last remote LDP TLV status rcvd: No fault
Last remote LDP ADJ status rcvd: No fault
MPLS VC labels: local 16, remote 100
Group ID: local 38, remote 36
MTU: local 0, remote 0
Remote interface description:
Sequencing: receive disabled, send disabled
Control Word: On (configured: autosense)
SSO Descriptor: 2.2.2.2/1, local label: 16
Dataplane:
SSM segment/switch IDs: 274581/4096 (used), PWID: 1
VC statistics:
transit packet totals: receive 0, send 0
transit byte totals: receive 0, send 0
transit packet drops: receive 0, seq error 0, send 0
Router# show aps
SONET 0/5/2 APS Group 25: protect channel 0 (Inactive) (HA)
Working channel 1 at 1.1.1.1 (Enabled) (HA)
bidirectional, non-revertive
PGP timers (extended for HA): hello time=1; hold time=10
hello fail revert time=120
Received K1K2: 0x00 0x05
No Request (Null)
Transmitted K1K2: 0x00 0x00
No Request (Null)
Remote APS configuration: (null)
SONET 0/0/2 APS Group 25: working channel 1 (Active) (HA)
Protect at 1.1.1.1
PGP timers (from protect): hello time=1; hold time=10
Remote APS configuration: (null) To configure VT 1.5-T1 loopback, use the following commands:
enable
configure terminal
controller sonet 0/5/0
rate oc3
no ais shut
alarm- report all
framing sonet
clock source internal
sts-1 1
clock source internal
mode vt-15
vtg 1 t1 1 loopback local
endTo configure VT 1.5-T1 BERT, use the following commands:
enable
configure terminal
controller sonet 0/5/0
rate oc3
no ais shut
alarm- report all
framing sonet
clock source internal
sts-1 1
clock source internal
mode vt-15
vtg 1 t1 1 bert pattern 2^11 interval 10
endThis section describes the configuration of path overhead.
C2 Flag
To configure the C2 flag, use the following commands:
enable
configure terminal
controller sonet 0/5/0
sts-1 1
overhead c2 10
endJ1 Flag
To configure the J1 flag, use the following commands:
enable
configure terminal
controller sonet 0/5/0
sts-1 1
overhead j1 expected length
endTo configure path threshold, use the following commands:
enable
configure terminal
controller sonet 0/5/0
sts-1 1
threshold b3-tca 3
endThe following sample output shows the verification of SONET configuration:
Router#show controllers sonet 0/3/3
SONET 0/3/3 is up. ======> this is the controller/port status.
Hardware is asr900
Port configured rate: OC3 =======> this is the rate the port is configured on it.
Applique type is Channelized Sonet / SDH
Clock Source is Line ===> the clocking config
Medium info:
Type: Sonet, Line Coding: NRZ,
SECTION:
LOS = 0 LOF = 0 =======> the section level alarm counter (from last clear counters)
SONET/SDH Section Tables
INTERVAL CV ES SES SEFS
05:50-05:58 0 0 0 0 ===> PMON for the port
LINE:
AIS = 0 RDI = 0 REI = 0 BIP(B2) = 0 =======> the line level alarm counter (from last clear counters)
Active Defects: None
Detected Alarms: None
Asserted/Active Alarms: None =========> present active alarms on the port.
Alarm reporting enabled for: SLOS SLOF SF B2-TCA
BER thresholds: SF = 10e-3 SD = 10e-6 ====> ber thresholds
TCA thresholds: B2 = 10e-6
Rx: S1S0 = 00
K1 = 00, K2 = 00 ===> k1k2 values
J0 = 00
RX S1 = 00
Tx: S1S0 = 00
K1 = 00, K2 = 00
J0 = 00
High Order Path:
PATH 1:
Clock Source is internal ====> path level clock
AIS = 0 RDI = 0 REI = 0 BIP(B3) = 0 ======> path layer alarms counter
LOP = 0 PSE = 0 NSE = 0 NEWPTR = 0
LOM = 0 PLM = 0 UNEQ = 0
Active Defects: None
Detected Alarms: None
Asserted/Active Alarms: None ======> present alarms on the path.
Alarm reporting enabled for: PLOP LOM B3-TCA
TCA threshold: B3 = 10e-6
Rx: C2 = 00 =====> rx and tx C2 byte..
Tx: C2 = 02
PATH TRACE BUFFER : UNSTABLE
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ……………. ====> path trace of the path
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
SONET Path Tables
INTERVAL CV ES SES UAS
05:58-05:58 0 0 0 0
PATH 2:
Clock Source is internal
AIS = 0 RDI = 0 REI = 0 BIP(B3) = 0
LOP = 0 PSE = 0 NSE = 0 NEWPTR = 0
LOM = 0 PLM = 0 UNEQ = 0
Active Defects: None
Detected Alarms: None
Asserted/Active Alarms: None
Alarm reporting enabled for: PLOP LOM B3-TCA
TCA threshold: B3 = 10e-6
Rx: C2 = 00
Tx: C2 = 00
PATH TRACE BUFFER : UNSTABLE
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
SONET/SDH Path Tables
INTERVAL CV ES SES UAS
05:58-05:58 0 0 0 0
OC3.STS1 0/3/3.1 is up. ======> present status of the path
Hardware is asr 900
Applique type is VT1.5 =====> mode of the path
STS-1 1, VTG 1, T1 1 (VT1.5 1/1/1) is down ====> status of the SPE (t1)
VT Receiver has no alarm.
Receiver is getting AIS. ===> alarm of the SPE (t1)
Framing is unframed, Clock Source is Internal =====> framing of the T1, clock of the t1
Data in current interval (0 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs
0 Unavail Secs, 0 Stuffed Secs
STS-1 1, VTG 1, T1 2 (VT1.5 1/1/2) is down
VT Receiver has no alarm.
Receiver is getting AIS.
The following table shows each field and its description.
|
Field |
Description |
|---|---|
|
SONET 0/3/3 is up |
Shows that the SONET controller is operating. The controller's state can be up, down, or administratively down. |
|
Port configured rate: OC3 |
Shows the rate configured on the port. |
|
SECTION: LOS = 0 LOF = 0 BIP = 0 |
Shows the section level alarm counters. |
|
SONET Section Tables: INTERVAL CV ES SES SEFS 05:50-05:58 0 0 0 0 |
Shows the PMON for the port. |
|
LINE: AIS = 0 RDI = 0 REI = 0 BIP(B2) = 0 |
Shows the line level alarm counters. |
|
Asserted/Active Alarms: None |
Shows the active alarms on the port. |
|
BER thresholds: SF = 10e-3 SD = 10e-6 |
Shows BER thresholds. |
|
K1 = 00, K2 = 00 |
Shows the K1 and K2 values. |
|
PATH 1: Clock Source is internal |
Shows the path level clock. |
|
AIS = 0 RDI = 0 REI = 0 BIP(B3) = 0 LOP = 0 PSE = 0 NSE = 0 NEWPTR = 0 LOM = 0 PLM = 0 UNEQ = 0 |
Shows the path layer alarm counters. |
|
Active Defects: None Detected Alarms: None Asserted/Active Alarms: None Alarm reporting enabled for: PLOP LOM B3-TCA |
Shows the alarms on the path. |
|
TCA threshold: B3 = 10e-6 Rx: C2 = 00 =====> rx and tx C2 byte.. Tx: C2 = 02 PATH TRACE BUFFER : UNSTABLE |
shows the Rx and Tx C2 bytes. |
|
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ……………. |
Shows the path trace. |
|
OC3.STS1 0/3/3.1 is up. |
Shows the status of the path. |
|
Applique type is VT1.5 |
Shows the mode of the path. |
|
STS-1 1, VTG 1, T1 1 (VT1.5 1/1/1) is down |
Shows the status of SPE (T1). |
|
Receiver is getting AIS. |
Shows the alarm of SPE (T1). |
|
Framing is unframed, Clock Source is Internal |
Shows the framing of T1 and clock of the T1. |
You can view the statistics or error count generated on the TDM lines for 1-Port OC192/STM-64 or 8-Port OC3/12/48/STM-1/-4/-16 Interface Module.
The performance monitoring result is displayed as output of the show controller sonet command.
SONET/SDH Section Tables
INTERVAL CV ES SES SEFS
09:52-09:52 0 0 388 0
SONET/SDH Section Tables
INTERVAL CV ES SES SEFS
09:52-09:52 0 0 388 0
SONET/SDH Path Tables
INTERVAL CV ES SES UAS
09:52-09:52 0 0 0 388
Data in current interval (360 seconds elapsed):
0 Line Code Violations, 0 P-bit Coding Violation
0 C-bit Coding Violation, 0 P-bit Err Secs
0 P-bit Severely Err Secs, 0 Severely Err Framing Secs
388 Unavailable Secs, 0 Line Errored Secs
0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
Data in current interval (360 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs
361 Unavail Secs, 0 Stuffed Secs
Data in current interval (360 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs
360 Unavail Secs, 0 Stuffed Secs
The complete output for the show controller command is described as:
Router#show controllers sonet 0/4/0
SONET 0/4/0 is down.
Hardware is asr 900 Port configured rate: OC3
Applique type is Channelized Sonet / SDH
Clock Source is Line
Medium info:
Type: Sonet, Line Coding: NRZ,
SECTION:
LOS = 1 LOF = 0 BIP = 0
SONET/SDH Section Tables
INTERVAL CV ES SES SEFS
09:52-09:52 0 0 388 0
LINE:
AIS = 0 RDI = 0 REI = 0 BIP(B2) = 0
Active Defects: None
Detected Alarms: SLOS SLOF LAIS
Asserted/Active Alarms: SLOS
Alarm reporting enabled for: SLOS SLOF SF B2-TCA
BER thresholds: SF = 10e-3 SD = 10e-6
TCA thresholds: B2 = 10e-6
Rx: S1S0 = 00
K1 = 00, K2 = 00
J0 = 00
RX S1 = 00
Tx: S1S0 = 00
K1 = 00, K2 = 00
J0 = 00
SONET/SDH Line Tables
INTERVAL CV ES SES UAS
09:52-09:52 0 0 0 388
High Order Path:
PATH 1:
Clock Source is internal
AIS = 0 RDI = 0 REI = 0 BIP(B3) = 0
LOP = 0 PSE = 0 NSE = 0 NEWPTR = 0
LOM = 0 PLM = 0 UNEQ = 0
Active Defects: None
Detected Alarms: PAIS
Asserted/Active Alarms: None
Alarm reporting enabled for: PLOP LOM B3-TCA
TCA threshold: B3 = 10e-6
Rx: C2 = 00
Tx: C2 = 04
PATH TRACE BUFFER : UNSTABLE
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
SONET/SDH Path Tables
INTERVAL CV ES SES UAS
09:52-09:52 0 0 0 388
PATH 2:
Clock Source is internal
AIS = 0 RDI = 0 REI = 0 BIP(B3) = 0
LOP = 0 PSE = 0 NSE = 0 NEWPTR = 0
LOM = 0 PLM = 0 UNEQ = 0
Active Defects: None
Detected Alarms: PAIS
Asserted/Active Alarms: None
Alarm reporting enabled for: PLOP LOM B3-TCA
TCA threshold: B3 = 10e-6
Rx: C2 = 00
Tx: C2 = 04
PATH TRACE BUFFER : UNSTABLE
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
SONET/SDH Path Tables
INTERVAL CV ES SES UAS
09:52-09:52 0 0 0 388
PATH 3:
Clock Source is internal
AIS = 0 RDI = 0 REI = 0 BIP(B3) = 0
LOP = 0 PSE = 0 NSE = 0 NEWPTR = 0
LOM = 0 PLM = 0 UNEQ = 0
Active Defects: None
Detected Alarms: PAIS
Asserted/Active Alarms: None
Alarm reporting enabled for: PLOP LOM B3-TCA
TCA threshold: B3 = 10e-6
Rx: C2 = 00
Tx: C2 = 02
PATH TRACE BUFFER : UNSTABLE
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
SONET/SDH Path Tables
INTERVAL CV ES SES UAS
09:52-09:52 0 0 0 388
OC3.STS1 0/4/0 Path 1 is down.
Hardware is asr 900
Applique type is T3
Receiver is getting AIS.
Framing is C-BIT Parity
Clock Source is internal
Equipment customer loopback
Data in current interval (360 seconds elapsed):
0 Line Code Violations, 0 P-bit Coding Violation
0 C-bit Coding Violation, 0 P-bit Err Secs
0 P-bit Severely Err Secs, 0 Severely Err Framing Secs
388 Unavailable Secs, 0 Line Errored Secs
0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
OC3.STS1 0/4/0.2 is down.
Hardware is asr 900
Applique type is Channelized T3 to T1
Receiver is getting AIS.
Framing is Unknown
Clock Source is internal
Equipment customer loopback
Data in current interval (360 seconds elapsed):
0 Line Code Violations, 0 P-bit Coding Violation
0 C-bit Coding Violation, 0 P-bit Err Secs
0 P-bit Severely Err Secs, 0 Severely Err Framing Secs
388 Unavailable Secs, 0 Line Errored Secs
0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
STS-1 2, T1 1 (CT3 21) is down
Receiver is getting AIS.
Framing is unframed, Clock Source is Internal
Data in current interval (360 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs
361 Unavail Secs, 0 Stuffed Secs
STS-1 2, T1 28 (CT3 228) is down
Receiver is getting AIS.
Framing is unframed, Clock Source is Internal
Data in current interval (360 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs
361 Unavail Secs, 0 Stuffed Secs
OC3.STS1 0/4/0.3 is down.
Hardware is asr 900
Applique type is VT1.5
STS-1 3, VTG 1, T1 1 (VT1.5 3/1/1)
Not configured.
STS-1 3, VTG 1, T1 2 (VT1.5 3/1/2) is down
VT Receiver has no alarm.
Receiver is getting AIS.
Framing is unframed, Clock Source is Internal
Data in current interval (360 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs
360 Unavail Secs, 0 Stuffed Secs
A comprehensive range of pluggable optical modules is available. .
To configure ONS Pluggables, use the following commands:
enable
configure terminal
controller mediatype 0/12/0
mode sonet
exit
controller sonet 0/12/0
rate oc3Before you configure the ONS pluggables, use the following commands to verify the supported plugables:
show hw-module subslot <slot/bay> transceiver <port> status:
The Transceiver in slot 0 subslot 7 port 4 is enabled.
Module temperature = +46.636 C
Transceiver Tx supply voltage = 3291.5 mVolts
Transceiver Tx bias current = 17264 uAmps
Transceiver Tx power = -2.9 dBm
Transceiver Rx optical power = -7.4 dBm
Note |
The show hw-module subslot <slot/bay> transceiver <port> status displays as Enabled if the pluggables are supported and the command displays as Disabled if the pluggables are not supported. |
show hw-module subslot <slot/bay> transceiver <port> idprom:
show hw-module subslot 0/7 transceiver 6 idprom detail
IDPROM for transceiver SPA-1T8S-10CS_7/6:
Description = SFP or SFP+ optics (type 3)
Transceiver Type: = ONS SE Z1 (406)
Product Identifier (PID) = ONS-SE-Z1
Vendor Revision = A
Serial Number (SN) = FNS19251NPM
Vendor Name = CISCO-FINISAR
Vendor OUI (IEEE company ID) = 00.90.65 (36965)
CLEI code = WMOTCZPAAA
Cisco part number = 10-1971-04
Device State = Enabled.
Date code (yy/mm/dd) = 15/06/19
Connector type = LC.
Encoding = 8B10B
NRZ
Manchester
Nominal bitrate = OC48/STM16 (2500 Mbits/s)
Minimum bit rate as % of nominal bit rate = not specified
Maximum bit rate as % of nominal bit rate = not specified
The transceiver type is 406
Link reach for 9u fiber (km) = IR-1(15km) (15)
Link reach for 50u fiber (m) = SR(2km) (0)
IR-1(15km) (0)
IR-2(40km) (0)
LR-1(40km) (0)
LR-2(80km) (0)
LR-3(80km) (0)
DX(40KM) (0)
HX(40km) (0)
ZX(80km) (0)
VX(100km) (0)
1xFC, 2xFC-SM(10km) (0)
ESCON-SM(20km) (0)
Link reach for 62.5u fiber (m) = SR(2km) (0)
IR-1(15km) (0)
IR-2(40km) (0)
LR-1(40km) (0)
LR-2(80km) (0)
LR-3(80km) (0)
DX(40KM) (0)
HX(40km) (0)
ZX(80km) (0)
VX(100km) (0)
1xFC, 2xFC-SM(10km) (0)
ESCON-SM(20km) (0)
Nominal laser wavelength = 1310 nm.
DWDM wavelength fraction = 1310.0 nm.
Supported options = Tx disable
Tx fault signal
Loss of signal (standard implementation)
Supported enhanced options = Alarms for monitored parameters
Software Rx LOS monitoring
Diagnostic monitoring = Digital diagnostics supported
Diagnostics are externally calibrated
Rx power measured is "Average power"
Transceiver temperature operating range = -40 C to 85 C (industrial)
Minimum operating temperature = -40 C
Maximum operating temperature = 85 C
High temperature alarm threshold = +90.000 C
High temperature warning threshold = +85.000 C
Low temperature warning threshold = -40.000 C
Low temperature alarm threshold = -45.000 C
High voltage alarm threshold = 3630.0 mVolts
High voltage warning threshold = 3470.0 mVolts
Low voltage warning threshold = 3140.0 mVolts
Low voltage alarm threshold = 2971.2 mVolts
High laser bias current alarm threshold = 85.000 mAmps
High laser bias current warning threshold = 65.000 mAmps
Low laser bias current warning threshold = 4.000 mAmps
Low laser bias current alarm threshold = 2.000 mAmps
High transmit power alarm threshold = 4.0 dBm
High transmit power warning threshold = 2.0 dBm
Low transmit power warning threshold = -7.0 dBm
Low transmit power alarm threshold = -9.0 dBm
High receive power alarm threshold = 1.0 dBm
Low receive power alarm threshold = -26.0 dBm
High receive power warning threshold = -1.0 dBm
Low receive power warning threshold = -24.9 dBm
External Calibration: bias current slope = 1.000
External Calibration: bias current offset = 0
show hw-module subslot <slot/bay> transceiver <port> idprom brief:
sh hw-module subslot 0/7 transceiver 6 idprom brief
IDPROM for transceiver SPA-1T8S-10CS_7/6:
Description = SFP or SFP+ optics (type 3)
Transceiver Type: = ONS SE Z1 (406)
Product Identifier (PID) = ONS-SE-Z1
Vendor Revision = A
Serial Number (SN) = FNS19251NQ0
Vendor Name = CISCO-FINISAR
Vendor OUI (IEEE company ID) = 00.90.65 (36965)
CLEI code = WMOTCZPAAA
Cisco part number = 10-1971-04
Device State = Enabled.
Date code (yy/mm/dd) = 15/06/19
Connector type = LC.
Encoding = 8B10B
NRZ
Manchester
Nominal bitrate = OC48/STM16 (2500 Mbits/s)
Minimum bit rate as % of nominal bit rate = not specified
Maximum bit rate as % of nominal bit rate = not specified
|
Related Topic |
Document Title |
|---|---|
|
Cisco IOS commands |
http://www.cisco.com/en/US/docs/ios/mcl/allreleasemcl/all_book.html |
|
Standards |
Title |
|---|---|
|
— |
There are no standards for this feature. |
|
MIB |
MIBs Link |
|---|---|
|
— |
To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL: |
|
RFCs |
Title |
|---|---|
|
— |
There are no RFCs for this feature. |
|
Description |
Link |
|---|---|
|
The Cisco Support website provides extensive online resources, including documentation and tools for troubleshooting and resolving technical issues with Cisco products and technologies. To receive security and technical information about your products, you can subscribe to various services, such as the Product Alert Tool (accessed from Field Notices), the Cisco Technical Services Newsletter, and Really Simple Syndication (RSS) Feeds. Access to most tools on the Cisco Support website requires a Cisco.com user ID and password. |
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