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 :: Mailing Lists

[ILUG] ARP Insanity!

[ILUG] ARP Insanity!

Paul Jakma paul at clubi.ie
Tue Feb 21 15:03:55 GMT 2006


On Tue, 21 Feb 2006, Owen Connolly wrote:

> Right! Definitely sounds like the arp cache on the switch...

> What type of switch is it? Some can cache for up 24 hours...

a) he reset it
b) he's getting ARP replies for the MAC concerned

So that'd be a switch that both stores its ARP cache to non-volatile
RAM /and/ synthesises ARP replies on behalf of MACs.

Ie, it's likely not the switch (the one reset anyway). I'm still 
curious about switches that proxy ARP.

Presuming it's the 'old' host (one IP was moved away), be interesting 
to see if 'arp -s <IP> <correct MAC>' has any effect..

regards,
-- 
Paul Jakma	paul at clubi.ie	paul at jakma.org	Key ID: 64A2FF6A
Fortune:
Pournelle must die!



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