Table 139: Routing Engine Mastership Election - Juniper M Series Monitoring And Troubleshooting Manual

M Series and T Series Routers Monitoring and Troubleshooting Guide
604
statement at the [
routing-engine
configuration. For more information, see the Junos OS System Basics Configuration Guide.
When you force the backup Routing Engine to become the master Routing Engine with
the request chassis routing-engine master
for any reason, the master reverts to the default setting.
NOTE: The configurations on the two Routing Engines do not have to be the
same, and they are not automatically synchronized. If you configure both
Routing Engines as masters, when the chassis software restarts for any
reason, the Routing Engine in slot 0 becomes the master and the Routing
Engine in slot 1 becomes the backup.
We recommend making both configurations the same.
When both Routing Engines have the same configuration and come up at the same time,
the Routing Engine in slot 0 takes precedence over the Routing Engine in slot
on page 604 indicates which Routing Engine becomes master based on the configuration
of both Routing Engines.

Table 139: Routing Engine Mastership Election

Slot 1 Master
Configuration
Backup
Disabled
The following command output displays when you attempt to have the backup Routing
Engine become master:
user@M20-host> request chassis routing-engine master acquire
warning: Traffic will be interrupted while the PFE is re-initialized
warning: The other routing engine's file system could be corrupted
Reset other routing engine and become master ? [yes,no] (no)
The following command output displays when you switch the mastership from the master
Routing Engine to the backup:
user@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...
edit chassis redundancy
command and then restart the chassis software
Slot 0 Configuration
Master Backup
Slot 0: master Slot 0: backup
Slot 1: backup Slot 1: master
Slot 0: master Slot 0: master
Slot 1: backup Slot 1: backup
Slot 0: master Slot 0: master
Slot 1: disabled Slot 1: disabled
Copyright © 2012, Juniper Networks, Inc.
] hierarchy level in the
1.Table 139
Disabled
Slot 0: disabled
Slot 1: master
Slot 0: disabled
Slot 1: master
Slot 0: disabled
Slot 1: disabled