nanog mailing list archives

Re: icmp rpf


From: virendra rode // <virendra.rode () gmail com>
Date: Sun, 24 Sep 2006 17:49:39 -0700


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Mark Kent wrote:
virendra rode wrote:
This is yet another reason one shouldn't rely on pings & traceroutes to
perform reachability analysis.

So, you're in the "traceroute is not important" camp?
(you'll note that in my email I did ask whether we think 
traceroute is important)
- ----------------------------
I'm sure its important. All I'm saying is, icmp can get rate-limited
(many times it does) which could possibly lead to packet loss and even
drops while traversing hops.


regards,
/virendra



Mark Smith wrote:
The non-announcers, because they're also breaking PMTUD.

Really?   How?   Remember, we're not talking about RFC1918 space,
where there is a BCP that says we should filter it at the edge.
We're talking about public IP space, that just doesn't happen to be
announced outside of a particular AS.

Thanks,
-mark

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