The Cisco® Transport Node Controller (TNC) and Transport Shelf Controller (TSC) and the enhanced versions (TNCE and TSCE, respectively) are next-generation system processors for the Cisco ONS 15454 M6 and ONS 15454 M2 Multiservice Transport Platforms (MSTPs) and the Cisco Carrier Packet Transport (CPT) 600 and CPT 200 platforms (Figure 1). The Cisco TNC, TNCE, TSC, and TSCE cards perform system initialization, provisioning, alarm reporting, maintenance, diagnostics, IP address detection and resolution, SONET and SDH data-communications-channel (DCC) termination, system DC input-voltage monitoring, and system fault detection, and they support multishelf connections. The TNC and TNCE cards also have two optical service channels that support a supervisory data channel (SDC), distribution of synchronous clocking, and a 100-Mbps user data channel (UDC). The enhanced versions, TNCE and TSCE, support the IEEE1588v2 Precision Timing Protocol (PTP) and time of day (ToD) with pulse per second (PPS), in addition to support for Synchronous Ethernet (SyncE)/Source Specific Multicast (SSM) and traditional SONET and SDH Building Integrated Timing Supply (BITS) timing, which the TNC and TSC also support. The cards reside in slots 1 and 8 in the Cisco ONS 15454 M6 and Cisco CPT 600, and slot 1 in the Cisco ONS 15454 M2 and Cisco CPT 200. In the Cisco ONS 15454 M6 and Cisco CPT 600, the card can be equipped as active and standby, providing 1:1 equipment protection. In the Cisco ONS 15454 M2, ONS 15454 M6, CPT 200, and CPT 600, a single card is used in simplex mode.
The Cisco TNC, TNCE, TSC, and TSCE cards incorporate a highly stable Layer 3 internal timing reference to provide system timing based on input received from an external BITS source or from an incoming SONET or SDH optical signal. Synchronous status messaging helps the system select the best timing sources, and a holdover mode maintains timing accuracy when preprovisioned synchronization references are not available.
Figure 1. Cisco ONS 15454 TNC Card and ONS 15454 TSC Card
Nonvolatile database storage for communication, provisioning, and system control is provided, allowing full database recovery and survivability with complete system power loss. In addition, short-term clock recovery is also supported, reducing the need to reset the calendar and ToD settings after a brownout or complete power outage. Unique to the Cisco ONS 15454 M6, ONS 15454 M2, CPT 600, and CPT 200 is a memory module built into the chassis. This external memory is synchronized with the memory of the TNC, TNCE, TSC, and TSCE, thereby providing a backup to the node IP address, software package, and circuit database. This synchronization provides faster time to recovery when the node is used in simplex mode during a control-card replacement.
The Cisco TNC, TNCE, TSC, and TSCE cards have 2 built-in interface ports for accessing the system: an RJ-45 connector and an RS-232. The RJ-45 port provides 10BASE-T Ethernet connectivity to the system, providing local and remote access to the craft-management system, Cisco Transport Controller, through a common web interface. You can also use this port for interconnection to customer operations support systems (OSSs) and network management systems (NMSs), providing integration to external element management systems (EMSs), NMSs, and OSSs.
The Cisco TNC, TNCE, TSC, and TSCE cards provide security enhancements, allowing you to configure the front panel and Cisco ONS 15454 M6, ONS 15454 M2, CPT 600, and CPT 200 chassis Ethernet interfaces as regenerators or provision them with individual IP and MAC addresses for segregated craft and DCC access. The RS-232 port provides a serial ASCII interface for local craft access using VT100 emulation so that you can enter Transaction Language 1 (TL1) commands directly over a Telnet session without the assistance of a browser.
The front panels of the Cisco TNC, TNCE, TSC, and TSCE cards provide multicolored LEDs for a quick view of the status of the card activity, raised network alarms, shelf voltage input, LAN interface, and synchronization. Two front-panel buttons allow you to quiet an active external audible alarm (alarm-cutoff button) or test the working state of system LEDs. The Cisco TNC and TSC cards are supported beginning with the Cisco ONS 15454 MSTP Release 9.2.0 system software for both the Cisco ONS 15454 M6 and ONS 15454 M2 platforms. The Cisco TNCE and TSCE cards are supported beginning with the Cisco ONS 15454 MSTP Release 9.3.0 system software for both the Cisco ONS 15454 M6 and ONS 15454 M2 platforms, and the Cisco CPT 9.3.0 system software for both the Cisco CPT 600 and CPT 200 platforms. Deployed networks may consist of Cisco ONS 15454 nodes equipped with Cisco Timing, Communications, and Control Two (TCC2), TCC2P, or TCC3 processor cards.
Features and Benefits
The Cisco ONS 15454 TNC, TNCE, TSC, and TSCE cards provide the following feature set:
• Eighty-four section DCC (SDCC) and multiplex section DCC (MSDCC) terminations allow the interconnection of multiring and linear systems on a single-shelf assembly, reducing networking costs.
• Eighty-four SDCC tunnels or SDCC-to-line DCC (LDCC) tunnels provide interface flexibility for transparent transport of third-party DCC overhead channels.
• Integrated system input-voltage monitoring facilitates proactive identification of DC power-system problems.
• Time-and-date clock recovery after brownout or power loss prevents clock reprogramming.
• A complete shelf lamp test through a faceplate pushbutton simplifies technician LED maintenance testing.
• Local and remote craft user access allows technicians to access nodes from anywhere.
• Local audible alarm cutoff squelches office audible or visual alert systems.
• Through the Cisco ONS 15454 M6 Electrical Connection Unit (ECU), the cards support connection to up to six subtended shelves or to the master shelf.
• The cards support up to 24 dry-contact external alarms.
Additionally, the Cisco TNC and TNCE cards offer the following enhanced features:
• Using Small Form-Factor Pluggable (SFP) ports, these cards support up to two optical service channels that contain SDC, timing, and UDC.
The enhanced TNCE and TSCE cards add the following enhanced features:
• These cards support the IEEE1588v2 Precision Timing Protocol with ToD and PPS.
Table 1 outlines the feature availability supported on the Cisco ONS 15454 TNC, TNCE, TSC, and TSCE.
Table 1. Feature Availability
84 SDCC and MSDCC terminations
28 SDCC tunnels or LDCC terminations
• DCC D1-D3 = 194 kbps implemented
• DCC D4-D12 = 576 kbps implemented
• UDC/VoIP 100 kbps (Packet over SONET into VC-4 payload)
Gigabit Ethernet (the 1-Gbps payload is shared)
• Data Communications Network (DCN) variable bandwidth (maximum: 100 Mbps)
• VoIP/UDC variable bandwidth (maximum: 100 Mbps)
Generic communications channel (GCC)
GCC0 may be ~350 kbps (OTU1), ~1.3 Mbps (OTU2), 5.2 Mbps (OTU3), ~12 Mbps (OTU4)
SFP: OC-48/STM-16 or Gigabit Ethernet, CWDM, 1510 nm
The Cisco ONS 15454 M6, ONS 15454 M2, CPT 600, and CPT 200 equipped with TNC, TNCE, TSC, or TSCE cards offer significant advantages:
• Smaller footprint, lower power: The new TNC and TNCE cards aggregate the functions of what took 4 cards in the Cisco ONS 15454 and collapse it into 1 card.
• Integrated OSC: Each TNC and TNCE can be configured with one or two SFP ports to provide the OSC termination. In addition to OC-3/STM-1, the OSC can be configured with Fast Ethernet or Gigabit Ethernet for increased bandwidth and compatibility in future packet transport architectures.
• Integrated multishelf management: The TNC, TNCE, TSC, and TSCE, coupled with the Cisco ONS 15454 M6 ECU, can support up to 30 subtended shelves in a cascade configuration without the need of an external switch or separate Ethernet switch card.
• Increased processing power: These new cards have a significant increase in memory and processing power to support higher-level functions such as intelligent control plane, and to ensure that the nodes will be compatible with future versions as more features come available.
Tables 2 and 3 outline the specifications for the Cisco ONS 15454 TNC, TNCE, TSC, and TSCE cards.
Table 2. Product Specifications
Electromagnetic compliance (EMC) - Class A
ETSI 300-386-TC Telcordia Technologies Network Equipment Building Standards (NEBS) GR-1089-CORE, Issue 3 (Level 3, Type 2 and Type 4)
CISPR 22, CISPR 24
IC ICES-003 Issue 3, 1997
Telcordia Technologies NEBS GR-1089-CORE, Issue 3 Level IEC 60950-1/EN 60950-1, 1st Edition UL and cUL/CSA 60950-1 1st Edition (Level 3, Type 2 and Type 4)
Enhanced Transport Node Controller for M2, M6, CPT200, CPT600
Enhanced Transport Shelf Controller for M2, M6, CPT200, CPT600
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