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adaptivity pinned


Configures the tunnel to not move when a better path becomes available.

Syntax: [no] adaptivity pinned

Description: The adaptivity attribute determines how a tunnel responds when new network resources become available or when resource parameters change such that "better" paths become available. There are 4 adaptivity models: disabled, pinned, periodic, and linear.

Pinned adaptivity means that the tunnel is never re-routed when new network resources become available or other changes make an alternate path more preferable. Nor will the tunnel move if the traffic engineering data base indicates the path no longer meets restrictions such as administrative color or available bandwidth.

If the current path becomes invalid, and adaptivity pinned is specified, the path will not move. If the current path becomes invalid, and adaptivity disabled is specified, the path will move.

The tunnel may be moved if it is torn down by an intermediate node RSVP signaling and new network resources or better paths are available. Whether a tunnel is rerouted in this case is determined by the resilience attribute of the tunnel.

Use the adaptivity pinned command to configure the tunnel, default tunnel or parameter-set to not move when new resources become available, or the current path no longer meets constraints.

Use the no adaptivity command to remove the adaptivity specification.

Factory Default: Periodic 3600s jitter 720s.

Command Mode: Traffic engineering parameter-set and traffic engineering tunnel-name.

Example 1: In the following example, the adaptivity pinned command configures the tunnel to never move:

router1#configure terminal

Enter configuration commands, one per line. End with CNTL/Z.

router(config)#mpls te ospf

router(config-te)#tunnel oc12toBos

router(config-te-tunnel)#adaptivity pinned

Example 2: In the following example, the no adaptivity command removes the adaptivity specification for the oc12toBos tunnel:

router1#configure terminal

Enter configuration commands, one per line. End with CNTL/Z.

router(config)#mpls te ospf

router(config-te)#tunnel oc12toBos

router(config-te-tunnel)#no adaptivity

Related Commands: adaptivity disabled
adaptivity linear
adaptivity periodic


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