[61908] in North American Network Operators' Group
Re: cef/process switching problem
daemon@ATHENA.MIT.EDU (Jason Frisvold)
Tue Sep 9 11:25:57 2003
From: Jason Frisvold <friz@corp.ptd.net>
To: "Austad, Jay" <JAustad@temgweb.com>
Cc: nanog@merit.edu
In-Reply-To: <288FAF5565A1A74EA5E35C39E7EE1D420A1BDB5D@mail.temgweb.com>
Date: Tue, 09 Sep 2003 11:24:14 -0400
Errors-To: owner-nanog-outgoing@merit.edu
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Not sure on the MC3810 (never used one), but I know that many of the
other Cisco routers didn't do CEF on ethernet until later revisions of
code... There are other factors that kick it out of CEF as well.. I
believe ACL's and Route Maps are 2 of them..
On Tue, 2003-09-09 at 11:07, Austad, Jay wrote:
> I've got a cisco MC3810 with a bunch of DSL customers on it. CEF is
> enabled, but when I do a show int stat, I see that almost 100% of the
> outbound packets on the ethernet interface are process switched, and not
> being matched in the route cache. The Input looks just fine, and the oth=
er
> interfaces are borderline (usually 50% hit rate on the cache or a little
> less).
>=20
> CPU is sitting pretty high on this box during the day, and I have strong
> suspicions that this is why. :)
>=20
> I can't seem to find any info on why this would be happening or how to
> figure out what's going on. Anyone have any suggestions?
>=20
> -jay
--=20
---------------------------
Jason H. Frisvold
Backbone Engineering Supervisor
Penteledata Engineering
friz@corp.ptd.net
RedHat Engineer - RHCE # 807302349405893
Cisco Certified - CCNA # CSCO10151622
MySQL Core Certified - ID# 205982910
---------------------------
"Imagination is more important than knowledge.
Knowledge is limited. Imagination encircles
the world."
-- Albert Einstein [1879-1955]
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