LSP-Gen needs Intf Dampening
If a local link flaps, the router’s LSP-Gen timer will stabilize at 5s
And then the following can happen:
- at time T, the link is up
- at time T+1ms, LSP-Gen time-outs, the LSP is sent out announcing the link as up
- at time T+2ms, the link goes down and keeps on flapping, still from T+1ms until T+1ms+5s, the link will be announced as up.
This case is avoided by Intf Dampening