Nonstop active routing (NSR) requires you to configure graceful Routing Engine switchover (GRES). To enable graceful Routing Engine switchover, include the graceful-switchover statement at the [edit chassis redundancy] hierarchy level:
- [edit chassis redundancy]
-
graceful-switchover;
By default, nonstop active routing is disabled. To enable nonstop active routing, include the nonstop-routing statement at the [edit routing-options] hierarchy level:
- [edit routing-options]
-
nonstop-routing;
To disable nonstop active routing, remove the nonstop-routing statement from the [edit routing-options] hierarchy level.
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Note: When you enable nonstop active routing, you cannot enable automatic route distinguishers for multicast VPN routing instances. Automatic route distinguishers are enabled by configuring the route-distinguisher-id statement at the [edit routing-instances instance-name] hierarchy level; for more information, see the JUNOS VPNs Configuration Guide. |
To enable the routing platform to switch over to the backup Routing Engine when the routing protocol process (rpd) fails rapidly three times in succession, include the other-routing-engine statement at the [edit system processes routing failover] hierarchy level.
For more information about the other-routing-engine statement, see the JUNOS System Basics Configuration Guide.
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