Re: (PM) Avalanche! Help! (fwd)

MegaZone (megazone@livingston.com)
Sun, 25 Jan 1998 18:33:17 -0800 (PST)

Once upon a time Rob Chandhok shaped the electrons to say...
>OK, I'll ask. Is the situation described in Doug's message really a
>problem? To my eyes, this looks really serious.

It can be depending on the traffic, but in general - no. Very, very, very
rarely is there an issue reported associated with this.

>Is this something that ComOS is just doing wrong? Would enabling OSPF help?

Say you have a route on the gateway saying 1.1.1.1 is on PM2. Well, that
IP is in the pool but the user isn't on. Someone sends a packet for 1.1.1.1
and the gateway sends it to PM2. PM2 doesn't have a route for 1.1.1.1 as
it is not active, so it ends up sending it to the default route - back to
the gateway. Which then sends it back - and it bounces until TTL is up.

There is a request open to have a PM squelch packets that come in for a
pool IP address when that address isn't in use. But is hasn't been a
high priority as it hasn't been a major issue for most users. And the
ofilter on the ether0 as describe can do it today. People just want it
to be automatic.

-MZ

--
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