Bypass LSP RSVP IGP Synchronization

RSVP IGP synchronization applies to bypass LSPs. Upon IGP (OSPF/ISIS) neighborship down, a bypass LSP can either go down or creates a new instance per RSVP IGP synchronization. A new instance creation does not happen when there are active backups on the bypass LSP. All other behaviors are normal LSP behaviors regarding RSVP IGP synchronization.

The user can enable RSVP IGP synchronization by using the handle-ospf-neighbor-down or the handle-isis-neighbor-down command in MPLS router policy configuration mode.

To configure bypass LSP RSVP IGP synchronization, complete the following steps.

Enable the device for configuration.
```
device>configure
```
Enable the MPLS router.
```
device(config)# router mpls
```
Enable the policy mode.
```
device(config-router-mpls)# policy
```
Configure the RSVP IGP synchronization. In this example, use the handle-ospf-neighbor-down command.
```
device(config-router-mpls-policy)# handle-ospf-neighbor-down
```

The following example combines the steps above for bypass LSP RSVP IGP synchronization using the handle-ospf-neighbor-down command.

device>configure
device(config)# router mpls
device(config-router-mpls)# policy
device(config-router-mpls-policy)# handle-ospf-neighbor-down