[j-nsp] IPv4 BFD flaps on MX204

[Mark Tinka]

On 19/Aug/20 10:37, Antti Ristimäki wrote:

> Hi,
>
> In fact inline IPv6 BFD is supported for other than link-local addresses starting from 18.1 IIRC. This doesn't help for IS-IS or OSPFv3, though, as those use link-local addresses for adjacencies.
>
> We do have IPv6 BFD enabled for IS-IS but with very relaxed timers compared to IPv4. Haven't seen any issues for a couple of years.

If your timers are not aggressive, then you should be fine, as that will
account for any CPU spikes that de-prioritize BFDv6 packets.

We are running 150ms @ 3X and 250ms @ 5X. So we saw issues on BFDv6.

Mark.