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

Tassos Chatzithomaoglou achatz at forthnetgroup.gr
Mon Feb 11 10:18:37 EST 2013

"show standby redirect" should provide some info.
Since these redirects are controlled by HSRP (which changes the internal IPs), maybe there is no way to change their
There is a command to disable them though.


Phil Mayers wrote on 11/02/2013 16:17:
> 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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