nanog mailing list archives
Re: Cisco uRPF failures
From: "Anton Kapela" <tkapela () gmail com>
Date: Sat, 6 Sep 2008 12:20:34 -0500
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, and
What do you mean by 'non routable?' What was the src/dst makeup of the test traffic?
We also discovered problems related to uRPF and load balanced links, but those were difficult to reproduce in the lab and we couldn't affect their peering, so we had to disable uRPF and ignore so I don't have much details.
What version of code? Also, port-channel/lag or ECMP?
quickly, but that turns out not to be the case. To this day I've never
I've never seen the issues you speak of, so it could be code/platform/config specific. Also, what sup were you testing?
found a network operator using uRPF on Cisco gear. (note: network operator. it's probably fine for several-hundred-meg enterprise sites)
Forgive me, but what does bits/sec have to do with anything? -Tk
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)