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Configuring a PSD with Redundant Routing Engines

To initially configure a PSD with redundant Routing Engines:

  1. See Configuring a PSD with a Single Routing Engine and follow Step 1 through Step 4 to initially configure the backup Routing Engine.
  2. Instead of Step 5 and Step 7 in Configuring a PSD with a Single Routing Engine, configure a hostname and the IP addresses and prefix lengths for one or both of the router management Ethernet interfaces (fxp0 and fxp1) on each Routing Engine.

    If both interfaces are configured (for JCS switch module redundancy), we recommend that the IP address for each interface be on a separate subnet. The fxp0 interface connects to port 6 on the JCS switch module in bay 1, whereas the fxp1 interface connects to port 6 on the JCS switch module in bay 2.

    [edit]
    root# edit groups
    [edit groups]
    root# set re0 system host-name router1
    root# set re0 interfaces fxp0 unit 0 family inet address 10.10.10.1/24
    root# set re1 system host-name router2
    root# set re1 interfaces fxp0 unit 0 family inet address 10.10.10.2/24
    root# set re0 system host-name router1
    root# set re0 interfaces fxp1 unit 0 family inet address 10.20.20.1/24
    root# set re1 system host-name router2
    root# set re1 interfaces fxp1 unit 0 family inet address 10.20.20.2/24
  3. Configure the routing platform’s domain name:
    [edit]
    root# set system domain-name domain-name
  4. Set the loopback interface address for each Routing Engine.
    [edit groups]
    root# set re0 interfaces lo0 unit 0 family inet address 2.2.2.1/32
    root# set re1 interfaces lo0 unit 0 family inet address 2.2.2.2/32
  5. Issue the apply-groups statement to reproduce the configuration group information to the main part of the configuration.
    [edit groups]
    root# top
    [edit]
    root# set apply-groups [re0 re1]
  6. Configure Routing Engine redundancy:
    [edit]
    root# set chassis redundancy routing-engine 0 master
    root# set chassis redundancy routing-engine 1 backup
    root# set chassis redundancy routing-engine graceful-switchover
  7. Save the configuration change on both Routing Engines:
    [edit]
    root# commit synchronize
  8. Continue with Step 8 through Step 11 in Configuring a PSD with a Single Routing Engine.
  9. After you have installed the new software and are satisfied that it is successfully running, issue the request system snapshot command to back up the new software on both master and backup Routing Engines.
    {master}
    user@host> request system snapshot

    The root file system is backed up to /altroot, and /config is backed up to /altconfig. The root and /config file systems are on the routing platform’s flash disk, and the /altroot and /altconfig file systems are on the routing platform’s hard disk.

    Note: After you issue the request system snapshot command, you cannot return to the previous version of the software, because the running copy and backup copy of the software are identical.

Note: The logout-on-disconnect statement at the [edit system ports console] hierarchy level is not supported for Routing Engines on the JCS 1200 platform. When the cable is unplugged from the Routing Engine, the user is not logged out of the console session.

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