On (2014-12-02 16:40 -0500), Brandon Applegate wrote: Hey,
> Could there be an older IOS (or bug) that would NOT ignore this and rather > ‘answer’ for it ? What about local proxy-arp (have never touched local proxy > arp, only read about it). I’m thinking that a proxy arp answer could trigger > the duplicate IP detection in Win2k8. No strange spanning tree errors or > logs that I can see. It could also be a ‘3rd party’ on the vlan somewhere - > i.e. not the Cisco router(s). Proxy-arp would only respond, if address is routed outside the link. So unless the network has subnets misconfigured (perhaps /24 in one place, and say /29 in another place, proxy arp would do this, but only for the /29 part, rest of the /24 would work ok) Local-proxy-arp would do this for all hosts, but I doubt the network would work at all. > I am working with $org, but while I sit and wait on emails and pcaps - I > thought I’d post this. Thanks in advance for any brain cycles spent on it. ACK, I think more information is required, especially how do they manually intervene. What does ARP table say before and after this manual work? -- ++ytti _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
