nanog mailing list archives
Re: Cisco uRPF failures
From: Jo Rhett <jrhett () netconsonance com>
Date: Thu, 11 Sep 2008 00:43:20 -0700
On Sep 6, 2008, at 10:20 AM, Anton Kapela wrote:
On Thu, Sep 4, 2008 at 11:35 AM, Jo Rhett <jrhett () netconsonance com> wrote:That's the surprising thing -- no scenario. Very basic configuration. Enabling uRPF and then hitting it with a few gig of non-routable packets consistently caused the sup module to stop talking on the console, andWhat do you mean by 'non routable?'
Should have been dropped by UDP.
What was the src/dst makeup of the test traffic?
Both random sources and singular sources demonstrated the problem.
What version of code? Also, port-channel/lag or ECMP?
I don't have those details handy now, nor am I likely to anytime soon. If they've been solved in recent code, great. But I've seen nothing in the tech notes.
quickly, but that turns out not to be the case. To this day I've neverI've never seen the issues you speak of, so it could be code/platform/config specific. Also, what sup were you testing?
720s, as said repeatedly.
Forgive me, but what does bits/sec have to do with anything?
The problem only appeared at high bits/sec, as I've said repeatedly. -- Jo RhettNet Consonance : consonant endings by net philanthropy, open source and other randomness
Current thread:
- Re: Force10 Gear - Opinions jim deleskie (Sep 01)
- Re: Force10 Gear - Opinions Owen DeLong (Sep 01)
- <Possible follow-ups>
- Re: Force10 Gear - Opinions Jo Rhett (Sep 03)
- RE: Force10 Gear - Opinions James Jun (Sep 03)
- Re: Force10 Gear - Opinions Jo Rhett (Sep 03)
- Re: Force10 Gear - Opinions Rubens Kuhl Jr. (Sep 03)
- Cisco uRPF failures Jo Rhett (Sep 04)
- Re: Cisco uRPF failures Anton Kapela (Sep 06)
- Re: Cisco uRPF failures Christopher Morrow (Sep 06)
- Re: Cisco uRPF failures Jo Rhett (Sep 11)
- Re: Cisco uRPF failures Sam Stickland (Sep 07)
- Re: Cisco uRPF failures Saku Ytti (Sep 08)
- Re: Cisco uRPF failures Jo Rhett (Sep 11)
- Re: Cisco uRPF failures Saku Ytti (Sep 11)
- Re: Cisco uRPF failures Jo Rhett (Sep 11)
- Re: Cisco uRPF failures Brandon Ewing (Sep 13)
- Re: Cisco uRPF failures Saku Ytti (Sep 13)
- RE: Cisco uRPF failures Tom Zingale (tomz) (Sep 15)
- RE: Force10 Gear - Opinions James Jun (Sep 03)
- Re: Force10 Gear - Opinions Brian Feeny (Sep 03)