Integrating the Switching Planes Between an Operational T640 Router and the TX Matrix Router

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 out-of-band management device. This provides you access to the system if its control plane is not functioning.

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.

Connecting and Testing a Switching Plane Between a T640 Router and TX Matrix Router

Caution: While you install the TX Matrix router or replace a fiber-optic array cable, small deposits of oil, dust, and debris can enter the TX-SIB and T640-SIB fiber-optic array adapters, the fiber-optic array cable connectors, and the loopback connectors and adapters. We recommend that you clean the optics in these components, as well as the loopback connector and adapter dust covers, immediately before connecting them. For cleaning instructions, see Cleaning the TX Matrix and T640 Fiber-Optic Components Overview.

1. Using the labels you attached to the ends of the fiber-optic array cables, identify the cable that plugs into the T640-SIB.
2. Remove the dust cover from the fiber-optic array cable connector by loosening the thumbscrew and captive screw on the connector. (Use the supplied small slotted screwdriver to loosen the captive screw.) Store the dust cover in a dust-free resealable plastic bag.
3. With the fiber-optic array cable extending toward the left side of the chassis (as you face the rear), align the cable connector with the T640-SIB adapter and carefully press it into the adapter until it stops. The cable connector and adapter are keyed to ensure proper mating.

   Note: The optics in a fiber-optic array adapter are spring loaded, so you must continue to apply force to a fiber-optic array cable connector or loopback connector while securing it to a TX-SIB or T640-SIB adapter.

4. Partially tighten the thumbscrew and captive screw on the fiber-optic array cable connector. (Use the supplied small slotted screwdriver to tighten the captive screw.) Alternate between the thumbscrew and captive screw until the cable connector is secured to the adapter.
5. On an external management device connected to the console or auxiliary port of the T640-CIP, bring the T640-SIB online using one of the following methods:
   • Press and hold the ONLINE/OFFLINE button on the T640-SIB faceplate until the OK LED blinks.
   • Issue the request chassis sib online command. For example:
     user@host> request chassis sib online slot 0
6. On an external management device connected to the console or auxiliary port of the TX-CIP, enable the TX-SIB fiber-optic array adapter receivers by issuing the request chassis sib slot start-receiver scc command. For example, if you are enabling adapter LCC0 on TX-SIB-0, issue the following command:
   user@host> request chassis sib slot 0 start-receiver 0 scc

7. On an external management device connected to the console or auxiliary port of the T640-CIP, enable the T640-SIB fiber-optic array adapter receivers by issuing the request chassis sib slot start-receiver command. For example, if you are enabling the adapter on T640-SIB-0, issue the following command:
   user@host> request chassis sib slot 0 start-receiver 0

8. Verify that the RX LED next to the TX-SIB adapter is steadily lit green.
9. Verify that the RX LED next to the T640-SIB adapter is steadily lit green.
10. If the RX LEDs next to the TX-SIB adapter and T640-SIB adapter are steadily lit green, the connection between the TX-SIB and T640-SIB is operating correctly.

    If the RX LEDs next to the TX-SIB adapter and T640-SIB adapter are not steadily lit green, disable the TX-SIB and T640-SIB adapter receivers, disconnect the fiber-optic array cable connector from the T640-SIB, and clean it and the T640-SIB adapter:

    • To disable the adapter receivers, issue the request chassis sib slot stop-receiver scc and request chassis sib slot stop-receiver commands on the TX Matrix router and T640 router. For example, if you are disabling the adapters on TX-SIB-0 and T640-SIB-0, issue the following commands on the TX Matrix router and T640 router:
      user@host> request chassis sib slot 0 stop-receiver 0 scc

      user@host> request chassis sib slot 0 stop-receiver 0

    • To disconnect the cable connector, partially loosen its thumbscrew and captive screw. (Use the supplied small slotted screwdriver to loosen the captive screw.) Alternate between the thumbscrew and the hex screw until the cable connector is removed from the adapter.
    • For instructions about cleaning the fiber-optic array cable connector and T640-SIB adapter, see Cleaning the TX Matrix and T640 Fiber-Optic Components Overview.
11. Reconnect the fiber-optic array cable connector and T640-SIB adapter as described in Step 3 through Step 4.
12. Enable the TX-SIB and T640-SIB adapter receivers.
    user@host> request chassis sib slot slot-number start-receiver interface-number scc

    The slot number can be from 0 through 4 and corresponds to the TX-SIB chassis slot. The interface number can be 0 through 3 and corresponds to the TX-SIB adapters labeled LCC0 through LCC3.

13. Verify that the RX LEDs next to the TX-SIB adapter and T640-SIB adapter are steadily lit green, indicating that the connection between the TX-SIB and T640-SIB is operating correctly.

    If the RX LEDs next to the TX-SIB adapter and T640-SIB adapter are not steadily lit green, contact your customer support representative for additional instructions. Do not proceed with the installation of the TX Matrix router until you have spoken to your customer support representative.

14. Repeat the procedures described in Converting a Switching Plane in a T640 Router and this procedure for each remaining SIB in the T640 router.

Transferring Control from the T640 Router to the TX Matrix Router

Note: After you transfer control to the TX Matrix router, you can roll back the T640 router to its original configuration, but traffic through the T640 router will be interrupted (seeRolling Back the Integration of a T640 Router for more information).

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. Set the M/S switch on each T-CB faceplate to M.
3. If graceful switchover is enabled on the T640 router, disable it on the master Routing Engine before rebooting the Routing Engines:
   user@host> show configuration chassis redundancy graceful-switchover

   traceoptions {
       flag update;
   }
   enable;
   

   user@host# set chassis redundancy graceful-switchover disable

   For more information about graceful switchover, see the Junos OS System Basics Configuration Guide .

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 T640-CIP-0, reboot the corresponding Routing Engine in the T640 router:
   user@host> request system reboot
6. On an external management device connected to the console or auxiliary port of T640-CIP-1, reboot the corresponding Routing Engine in the T640 router:
   user@host> request system reboot
7. On an external management device connected to the console or auxiliary port of TX-CIP-0, reboot the corresponding Routing Engine in the TX Matrix router:
   user@host> request system reboot
8. On an external management device connected to the console or auxiliary port of TX-CIP-1, reboot the corresponding Routing Engine in the TX Matrix router:
   user@host> request system reboot