Fabric hardening

Fabric hardening can be configured with two new CLI configuration commands, per fpc bandwidth-degradation and per fpc null route-action. Fabric hardening is the process of controlling bandwidth degradation to prevent null-route filtering. 

The commands give you more control over what threshold of bandwidth degradation to react to, and which corrective action to take. The per fpc bandwidth-degradation command determines how the FPC reacts when it reaches a specified bandwidth degradation percentage. The per fpc bandwidth-degradation command and the offline-on-fabric-bandwidth-reduction commands are mutually exclusive. If both commands are configured, an error is issued during the commit check. The per fpc null route-action command determines how the FPC responds to a 100 percent fabric degradation scenario. This command is optional and overrides the default fabric hardening procedures.