• Supported Platforms
• T1600 Routers, TX Matrix Plus Routers

• Related Topics
• Overview of Upgrading and Integrating an Operational T1600 Router
• Overview of Integrating an Offline T1600 Router into a Routing Matrix
• TX Matrix Preventing Electrostatic Discharge Damage

Rolling Back the Integration on the T1600 Router

To return the T1600 router to its original state as a standalone system after you have transferred control to the TX Matrix Plus router, you can roll back the integration. During the rollback, traffic passing through the router will be interrupted. This procedure uses LCC0 as an example.

1. Preparing to Roll Back the Integration
2. Removing the Control Plane Connections
3. Removing the Switching Planes
4. Returning to the Original T1600 Configuration

Preparing to Roll Back the Integration

1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
2. Take each TXP-T1600 SIB offline by using one of the following methods:
   • Press and hold the ONLINE/OFFLINE button on the TXP-T1600 SIB faceplate until the OK LED is not lit.
   • On an external management device connected to the console or auxiliary port of the TXP-CB, issue the request chassis sib offline command:
     
     

     user@host> request chassis sib lcc 0 slot 0 offline
3. If the online-expected statement is included at the [edit chassis lcc number] hierarchy level, delete it:
   
   

   user@host# delete chassis lcc 0 online-expected
4. Issue the commit synchronize command and ensure that there are no synchronization errors:
   
   

   user@host# commit synchronize
5. Take the T1600 router offline:
   
   

   user@host> request chassis lcc slot 0 offline

Removing the Control Plane Connections

To remove the control plane connections between the TXP-CIPs and the LCC-CBs:

1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
2. Disconnect the Ethernet cable plugged into the LCC control plane port labeled 0 on TXP-CIP-0.
3. Disconnect the other end of the Ethernet cable plugged into the port labeled SFC0 on LCC-CB-0.
4. Disconnect the Ethernet cable plugged into the LCC control plane port labeled LCC0 on TXP-CIP-1.
5. Disconnect the other end of the Ethernet cable plugged into the port labeled SFC0 on LCC-CB-1.

Note: It is not necessary to remove the LCC-CBs from the T1600 routers.

Removing the Switching Planes

To remove the switching planes

1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
2. Remove the fiber-optic array cables from each TXP-T1600 SIB.
3. Remove the dust covers from the dust-free resealable plastic bag and reinstall them on the fiber-optic array cable connectors. Align the dust cover with the cable connector and carefully press them together until they stop. The cover and the cable connector are keyed to ensure proper mating.
4. Arrange the fiber-optic array cables so that they are not touching or blocking access to T1600 router components, and that they do not drape where people could trip on them.
5. Replace each TXP-T1600 SIB with a T1600-SIB. Use the standard replacement procedure described in the T1600 Core Router Hardware Guide.

   Do not bring any of the SIBs online.

   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.

Returning to the Original T1600 Configuration

To return to the original T1600 configuration:

1. Set the M/S switch on each LCC-CB on the T1600 router faceplate to S.
2. On an external management device connected to the console or auxiliary port of the T1600 CIP, load the original T1600 router configuration. For example:
   
   

   user@host# load override t1600-config.conf
3. If graceful switchover is enabled in the original T1600 router configuration, disable it as follows:
   
   

   user@host# delete chassis redundancy graceful-switchover
4. Issue the commit synchronize command and ensure that there are no synchronization errors:
   
   

   user@host# commit synchronize
5. On an external management device connected to the console or auxiliary port of T1600-CIP-0, reboot the corresponding Routing Engine in the T1600 router:
   
   

   user@host> request system reboot
6. On an external management device connected to the console or auxiliary port of T1600-CIP-1, reboot the corresponding Routing Engine in the T1600 router:
   
   

   user@host> request system reboot
7. Display the status of the SIBs by issuing the show chassis sibs command on the master Routing Engine:
   
   

   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.

8. Delete all statements associated with LCC0 from the TX Matrix Plus router configuration. To review the T1600 router configuration changes that were merged into the TX Matrix Plus router configuration, see Creating a Configuration File for the Integration of an Operational T1600 Router.