Juniper EX9200 Features Manual page 210

High Availability Feature Guide for EX9200 Switches
Step-by-Step
Procedure
190
To perform a unified ISSU, select the appropriate tasks from the following list:
Verifying Dual Routing Engines and Enabling GRES and NSR on page 190
Verifying the Software Versions and Backing Up the Device Software on page 191
Adjusting Timers and Changing Feature-Specific Configuration on page 192
Upgrading and Rebooting Both Routing Engines Automatically on page 194
Restoring Feature-Specific Configuration on page 199
Upgrading Both Routing Engines and Rebooting the New Backup Routing Engine
Manually on page 200
Upgrading and Rebooting Only One Routing Engine on page 207
Verifying Dual Routing Engines and Enabling GRES and NSR
Enabling GRES and NSR is required regardless of which variation of the unified ISSU
procedure you use.
To verify that your device has dual Routing Engines and to enable GRES and NSR:
Log in to your device.
1.
Verify that dual Routing Engines are installed in your device by using the
2.
hardware command.
user@host> show chassis hardware
Routing Engine 0 REV 01
Routing Engine 1 REV 01
The command output contains lines listing Routing Engine 0 and Routing Engine 1.
By default, GRES is disabled; if you have not already done so, enable GRES by
3.
including the graceful-switchover
hierarchy level on the master Routing Engine.
[edit ]
user@host# set chassis redundancy
By default, NSR is disabled; if you have not already done so, enable NSR by including
4.
the nonstop-routing statement at the
[edit]
user@host# set routing-options nonstop-routing
When you configure NSR, you must also include the
5.
at the [edit system] hierarchy level so that configuration changes are synchronized
on both Routing Engines.
[edit]
user@host# set system commit
After you have verified your configuration and are satisfied with it, commit the
6.
changes by using the
[edit]
user@host# commit
commit complete
740-051822 9013086837
740-051822 9013086740
statement at the
graceful-switchover
[edit routing-options]
synchronize
commit command.
show chassis
RE-S-1800x4
RE-S-1800x4
[edit chassis redundancy]
hierarchy level.
statement
commit synchronize
Copyright © 2017, Juniper Networks, Inc.