nanog mailing list archives

Re: engineering --> ddos and flooding


From: "Geoff Zinderdine" <geoffz () mts net>
Date: Fri, 1 Jun 2001 14:39:06 -0500


Agreed.  Still you could just throw up a box at the end of that low speed
line and have your main peering session set it as NEXT_HOP for the host
route without needing it to be running a BGP session itself, no?

----- Original Message -----
From: "Mark Mentovai" <mark-list () mentovai com>
To: "Geoff Zinderdine" <geoff.zinderdine () mts mb ca>
Cc: <lucifer () lightbearer com>; <nanog () merit edu>
Sent: Friday, June 01, 2001 2:07 PM
Subject: Re: engineering --> ddos and flooding


Geoff Zinderdine wrote:
Why not just advertise the host route with an unreachable next hop from
your
main peering session?

Maybe your upstream sets the NEXT_HOP to your side of the point-to-point
for
you, just in case you neglected to do so.

Even if they don't, who's to say what's unreachable?  If the NEXT_HOP is
truly unreachable, in that there is no route to it, the BGP path won't be
marked as valid and won't make it to the IP routing table (Loc-RIB.)

I've long felt that IP should have come with a provision for an address
that
is never routed.  It would be great if we could get something like
127.0.0.2
for this very task.

Mark



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