Replace A Redundant Routing Engine - Juniper M Series Monitoring And Troubleshooting Manual
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Replace a Redundant Routing Engine
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Copyright © 2012, Juniper Networks, Inc.
Complete. The other Routing Engine becomes the master.
root@m20-host-0>
The following command output displays when you switch the mastership from the backup
to the master Routing Engine:
root@m20-host-0> request chassis routing-engine master switch
warning: Traffic will be interrupted while the PFE is re-initialized
Toggle mastership between routing engines ? [yes,no] (no) yes
Resolving mastership...
Complete. The local routing engine becomes the master.
root@m20-host-0>
The command output indicates that traffic will be interrupted during the Routing Engine
mastership switch process. The command output confirms whether you really want to
continue with the mastership switch process, and indicates when the mastership switch
process is complete.
request chassis routing-engine master <acquire <no-confirm>| release | switch>
acquire
—(Optional) Attempt to become the master Routing Engine.
—(Optional) Do not request confirmation.
no-confirm
release
—(Optional) Request the other Routing Engine to become the master.
—(Optional) Toggle mastership between Routing Engines.
switch
Checklist for Monitoring Redundant Routing Engines on page 591
If you have a router with two Routing Engines and you want to shut the power off to the
router or remove a Routing Engine, you must first halt the backup Routing Engine (if it
has been upgraded), then halt the master Routing Engine. To halt a Routing Engine, issue
the request system halt command. You can also halt both Routing Engines at the same
time by issuing the request system halt both-routing-engines command.
NOTE:
When you halt both Routing Engines, a message displays to press
Enter to restart or to halt. If you press Enter on the master Routing Engine to
restart, it will restart. However the backup Routing Engine will not restart. It
will wait at the message to restart or to halt. You then have to press Enter on
the console of the backup Routing Engine for it to restart.
To replace a redundant Routing Engine, see
Checklist for Monitoring Redundant Routing Engines on page 591
Chapter 29: Monitoring Redundant Routing Engines
"Removing a Routing Engine" on page
211.
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