[c-nsp] sup720 ICMP redirects "once per second"

Andy Ellsworth andy at dar.net
Mon Feb 11 09:30:22 EST 2013

I believe it's simply "ip icmp rate-limit unreachable". Default interval
appears to be 500ms.


On Mon, Feb 11, 2013 at 8:17 AM, Phil Mayers <p.mayers at imperial.ac.uk>wrote:

> All,
> Does anyone know which knob controls the "only send 1 ICMP redirect / sec"
> on an HSRP-enabled SVI on 6500/sup720 (SXJ IOS)? Is there a "show" command
> for the defaults / current setting?
> Note: I am not talking about the redirect MLS rate-limiter here; that's
> disabled. I'm seeing constant traffic flowing and would expect constant
> ICMP redirects, but that's not happening - they're coming at regular
> 1-second intervals, regardless of the underlying packet arrival rate.
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