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T640 T Series Control Boards (T-CBs) Description

 

Each T-CB consists of the following components:

  • 100-MB Ethernet switch for intermodule communication.

  • PCI bus to the Routing Engines.

  • Processor subsystem (SPMB).

Figure 1 shows the T-CB.

Figure 1: T-CB
T-CB

The following components are located on the T-CB faceplate:

  • The MASTER, FAIL, and OK LEDs, which indicate the status of the T-CB.

  • Online/offline button.

    Note

    When the adjacent Routing Engine is online, the online/offline button on the T-CB faceplate is nonfunctional. For more information, see Taking the T640 Host Subsystem Offline.

  • Two RJ-45 ports labeled AUX and CIP on the T-CB faceplate.

    For T640 routers connected to a TX Matrix platform, only the CIP port is used. For more information, see the TX Matrix Router Hardware Guide.

  • The M/S and CHASSIS ID configuration switches.

    • For a standalone T640 router, the M/S and CHASSIS ID configuration switches must always be set to S and 0.

    • For T640 routers connected to a TX Matrix platform, the M/S and CHASSIS ID configuration switches must always be set to M and the chassis identifier (ID) of the router. In this case, both T-CBs must have the same chassis ID. For more information, see the TX Matrix Router Hardware Guide.

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