On Mon, Nov 17, 2014 at 7:06 AM, Juliusz Chroboczek
<[email protected]> wrote:
>> This is no different to how most routing protocols work.

Something of an aside to this conversation, but there is a similar
problem in dealing with an
external gateway that does not speak the routing protocol either.

In my case (this morning) I had a cable modem that supplied IPv4 IPs
and a default route, but resolutely
decided it wasnt going to forward packets, while I had another cable
modem on a different router,
farther away that was working properly. The ¨babel-pinger¨ mechanism

http://lists.alioth.debian.org/pipermail/babel-users/2008-September/000160.html

would have been a cure for this...

... had I actually had it compiled.

A Nest-pinger (or responder - ) might be a way to keep a route alive....

> (I think you meant "most link-state routing protocols".)
>
> Yes, to a certain extent.  But now we have two distinct routing
> protocols -- HNCP and the "real" routing protocol --, which have different
> flooding protocols, with different timers and different resiliency.
>
> As I've said, I am hopefully just being paranoid, but my gut instinct is
> that this sort of two-way redistribution must be done with care.
>
> -- Juliusz
>
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-- 
Dave Täht

thttp://www.bufferbloat.net/projects/bloat/wiki/Upcoming_Talks

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