• Supported Platforms
• T640 Routers, TX Matrix Routers

Converting a Switching Plane in a T640 Router

Warning: Do not look directly into a fiber-optic array adapter or a connector at the end of a fiber-optic array cable attached to an adapter. The fiber optics emit laser light that can damage your eyes.

Note: We recommend that you manage the system using a directly attached management device instead of an in-band management device. This provides you access to the system if its control plane is not functioning.

To convert a switching plane from a SIB to a T640-SIB:

1. Verify that the T640 router contains five standard SIBs (a requirement for integrating an operational T640 router with the TX Matrix router). If needed, install additional SIBs. Use the standard installation procedure described in the T640 Core Router Hardware Guide.
2. Include the fabric upgrade-mode statement in the configuration at the [edit chassis] hierarchy level.
   
   

   user@host# set chassis fabric upgrade-mode
3. Commit the configuration on both the master and the backup Routing Engines.
   
   

   user@host# commit synchronize
4. Display the status of the T640 router SIBs by issuing the show chassis sibs command:
   
   

   user@host> show chassis sibs

   Slot  State               Uptime
    0    Spare            255 days, 31 minutes, 12 seconds
    1    Online           255 days, 31 minutes, 12 seconds
    2    Online           255 days, 31 minutes, 12 seconds
    3    Online           255 days, 31 minutes, 12 seconds
    4    Online           255 days, 31 minutes, 12 seconds

   Verify that four SIBs are in the Online state and one SIB is in the Spare state. To bring a SIB online, issue the request chassis sib online operational mode command.

5. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
6. Select one of the SIBs to replace and take it offline by using one of the following methods (we recommend that you start with the spare SIB as determined in Step 4):
   • Press and hold the ONLINE/OFFLINE button on the SIB faceplate for about five seconds until the OK LED is not lit.
   • Issue the request chassis sib offline command. For example:
     
     

     user@host> request chassis sib offline slot 0

   Note: When you bring an active SIB offline, the spare SIB becomes active and transitions to the Online state.

7. Replace the SIB with a T640-SIB. Use the standard replacement procedure described in the T640 Core Router Hardware Guide.

   Note: Ensure that the ejector handle tabs are properly mated inside their corresponding chassis slots before you tighten the captive screws on the ejector handles. You might have to close and open the handles a few times before the tabs catch the slots.

Note: After you replace a SIB with a T640-SIB, do not replace another SIB in the T640 router until you have successfully connected and tested the T640-SIB you just installed.