[j-nsp] BFD Distributed Mode for IPv6

[Mark Tinka]

On 3/Oct/18 15:40, Gert Doering wrote:

> If you run different IGPs for IPv4 and IPv6, you'll have independent
> BFD sessions for IPv4 and IPv6.  Just the "dual-stack ISIS hooking into
> BFD" won't give you "dual BFD" - since there is a common ISIS adjacency
> for all transported routing information (ISIS is signalled neither over
> IPv4 nor IPv6...) there is no other way than "if BFD breaks, assume
> the interface is down and tear down the ISIS adjacency".

True.

I suppose the issue will be the same if you run an IPv4 address family
under OSPFv3.

Mark.
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