[c-nsp] RSVP-TE was (no subject)

[Mark Tinka]

On 12/Apr/20 21:58, Hari Sapkota wrote:
> Hi Emmanuel,
>
> The RSVP should be informed in the case of link failure since BFD runs on
> the line card and detects failure in quicker way. In order to terminate
> RSVP signaling without having to wait for the hold timer, the BFD should be
> bound to the RSVP so that the headend router can signal the use of backup
> tunnel. I hope you have already provisioned the backup tunnel for the
> temporary use by the PLR till the recalculation of new RSVP path is
> completed.

What we've generally done is make sure the lowest level protocol reacts
as quickly as possible. This way, it's (quick) reaction would inform
lateral or upper-layer protocols to react accordingly.

So we tune IS-IS to react quickly, and enable BFD just for it.

We haven't found the need to enable BFD for BGP, LDP, and other
upper-layer protocols that rely on the IGP to function.

But stuff like this is not a one-size-fits-all.

Mark.