Upgrading the T1600 Host Subsystems in an Operational T1600 Router

1. Preparing the T1600 Router for Graceful Switchover
2. Upgrading the Host Subsystems in an Operational T1600 Router

Preparing the T1600 Router for Graceful Switchover

Graceful switchover must be configured before you integrate an operational T1600 router with the TX Matrix Plus router.

To prepare the T1600 router for graceful switchover:

1. Verify that graceful switchover is enabled on the T1600 router by displaying its configuration at the [edit chassis redundancy graceful-switchover] hierarchy level:
   user@host> show configuration chassis redundancy graceful-switchover

   traceoptions {
       flag update;
   }
   enable;
   

   If graceful switchover is not enabled, enable it in configuration mode as follows:

   user@host# set chassis redundancy graceful-switchover enable

   For more information about graceful switchover, see the Junos OS High Availability Configuration Guide .

2. Verify the state of the Packet Forwarding Engines by issuing the show pfe terse command on the master and backup Routing Engines:
   user@host> show pfe terse

   Slot Type Slot      State     Uptime
    0   GFPC Present   Online    03:46:19
    1   RE   Present   Online    03:47:09
   

   Verify that the State field of each Packet Forwarding Engine and the backup Routing Engine is Online.

   user@host> request routing-engine login other-routing-engine
   % cli
   user@host> show pfe terse

   Slot Type Slot      State     Uptime
    0   GFPC Present   Valid     03:46:19
   

   Verify that the State field of each Packet Forwarding Engine is Valid.

3. Verify that the T1600 Routing Engines are ready for a graceful switchover by issuing the show system switchover command on the backup Routing Engine:
   user@host> show system switchover

   Graceful switchover: On
   Configuration database: Ready
   Kernel database: Ready
   

   If the status of graceful switchover is not On, or the configuration and kernel database status are not Ready, see the Junos OS High Availability Configuration Guide  for instructions. Do not continue integrating an operational T1600 router with the TX Matrix Plus router until the Routing Engines are ready for a graceful switchover.

4. Log out of the backup Routing Engine:
   user@host> exit
   % exit
5. Issue the commit synchronize command and ensure that there are no synchronization errors:
   user@host# commit synchronize

Upgrading the Host Subsystems in an Operational T1600 Router

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. Gracefully upgrade the current Routing Engines to Junos OS Release 10.1 or later.
2. Determine which host subsystem is functioning as the master or the backup by using one of the two following methods:
   • Check the Routing Engine LEDs on the craft interface. If the green MASTER LED is lit, the corresponding host subsystem is functioning as the master.
   • Issue the following CLI command. The master Routing Engine is designated Master in the Current state field:
     user@host> show chassis routing-engine

     Routing Engine status:   
       Slot 0:
         Current state                 Master
     ...
      

3. Take the backup host subsystem offline. See the T1600 Core Router Hardware Guide .
4. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
5. Set the M/S configuration switches on each LCC-CB on the T1600 router before you install them in the chassis:
   • Set the chassis ID switch on each LCC-CB on the T1600 router to 0.

     Note: When you integrate an operational T1600 router with the TX Matrix Plus router, you must assign a chassis ID of 0 to the router.

   • Set the M/S switch on each LCC-CB on the T1600 router faceplate to S.
6. Replace the backup T-CB with an LCC-CB on the T1600 router. Use the standard replacement procedure described in the T1600 Core Router Hardware Guide .
7. Replace the backup Routing Engine with an RE-C1800 on the T1600 router. Follow the standard replacement procedure described in the T1600 Core Router Hardware Guide .
8. Perform a graceful switchover to the backup by issuing the request chassis routing-engine master switch command:
   user@host> request chassis routing-engine master switch
9. Replace the other T-CB (which now belongs to the backup host subsystem) with an LCC-CB on the T1600 router. Use the standard replacement procedure described in the T1600 Core Router Hardware Guide .
10. Replace the other Routing Engine (which now belongs to the backup host subsystem) with an RE-C1800 on the T1600 router. Follow the standard replacement procedure described in the T1600 Core Router Hardware Guide .
11. Perform a graceful switchover to the original master by issuing the request chassis routing-engine master switch command:
    user@host> request chassis routing-engine master switch
12. Verify that the LCC-CBs and RE-C1800 are displayed in the output of the show chassis hardware command:
    user@host> show chassis hardware

    Hardware inventory:
    Item             Version  Part number  Serial number     Description
    Chassis                                JN1103199AHA      T1600
    CB 0             REV 06   710-022597   DW8534            LCC Control Board
    CB 1             REV 06   710-022597   DW8527            LCC Control Board
    Routing Engine 0 REV 01   740-026941   737F-1094         RE-DUO-1800
    Routing Engine 1 REV 01   740-026941   737F-1082         RE-DUO-1800
    

    Note: The description for the RE-C1800, part number 740-026941, is LCC RE before the Junos OS Release 10.3 , and RE-DUO-1800 for Junos OS Release 10.3 and later.

Figure 1: T1600 Router LCC-CB