Supported Platforms
Damping Advertisement of LSP State Changes
When an LSP changes from being up to being down, or from down to up, this transition takes effect immediately in the router software and hardware. However, when advertising LSPs into IS-IS and OSPF, you may want to damp LSP transitions, thereby not advertising the transition until a certain period of time has transpired (known as the hold time). In this case, if the LSP goes from up to down, the LSP is not advertised as being down until it has remained down for the hold-time period. Transitions from down to up are advertised into IS-IS and OSPF immediately. Note that LSP damping affects only the IS-IS and OSPF advertisements of the LSP; other routing software and hardware react immediately to LSP transitions.
To damp LSP transitions, include the advertisement-hold-time statement:
seconds can be a value from 0 through 65,535 seconds. The default is 5 seconds.
You can include this statement at the following hierarchy levels:
- [edit protocols mpls]
- [edit logical-systems logical-system-name protocols mpls]
