Check The Default Routing Engine Redundancy Behavior; Display The Redundant Routing Engines Installed In The Router - Juniper M Series Monitoring And Troubleshooting Manual

M Series and T Series Routers Monitoring and Troubleshooting Guide
Related
Documentation

Check the Default Routing Engine Redundancy Behavior

Purpose
Action
Related
Documentation

Display the Redundant Routing Engines Installed in the Router

Purpose
600
user@host> show chassis redundancy
routing-engine 0 master;
routing-engine 1 backup;
failover on-loss-of-keepalives;
keepalive-time 300;
Checklist for Monitoring Redundant Routing Engines on page 591
By default, the Junos OS uses
Routing Engine. Unless otherwise specified in the configuration,
mastership if the acting master Routing Engine is rebooted.
To see how the default Routing Engine redundancy setting works:
CAUTION: Do not try this procedure on a production network.
Make sure the router is running on
1.
To manually switch the state of the Routing Engine mastership, use the
2.
routing-engine master command.
the master Routing Engine. If you use this command to change the master Routing
Engine, and then restart the chassis software for any reason, the master reverts to
the default setting. For information about switching Routing Engine mastership, see
the request chassis routing-engine master command in the Junos OS Protocols, Class
of Service, and System Basics Command Reference.
NOTE: On the next reboot of the master Routing Engine, the Junos OS
returns the router to the default state because you have not configured
the Routing Engines to maintain this state after a reboot.
Reboot the master Routing Engine
3.
up and reads the configuration. If you have not specified in the configuration which
Routing Engine is the master,
both 0 and 1 are in a backup state. The Junos OS detects this conflict and, to
RE RE
prevent a no-master state, reverts to the default configuration with RE0 assuming
mastership.
Checklist for Monitoring Redundant Routing Engines on page 591
To check for redundant Routing Engines in the router.
as the master Routing Engine and
RE0
as the master Routing Engine.
RE0
RE0 is now the backup Routing Engine and
. When you do this, the Routing Engine boots
RE1
RE 1 uses the default configuration as the backup. Now
Copyright © 2012, Juniper Networks, Inc.
as the backup
RE1
RE0 will always assume
request chassis
RE1 is