Re: Vlan Responding to an ARP Request

Well, there are some cases when it makes life easier for some.
I've just run into a proxy-ARP related gotcha. A couple of distribution
switches with HSRP, and a turn light like problem with some hosts.
(now it works, no it does not :)

After some troubleshooting, it was evident that the switch was answering
for the host, but it was not the active switch, which had proxy ARP
disabled. It was the standby one (with the standby MAC address!)
And there was a leftover static route hanging there...

-Carlos

Lindsay Hill @ 11/09/2012 20:07 -0300 dixit:
> Sounds like proxy ARP to me.
>
> Why proxy ARP is still on by default is beyond me. I can't see why any modern network that is properly configured should need it.
>
> - Lindsay
>
> On 12/09/2012, at 9:56 AM, Tony Blanco <blancoj17_at_yahoo.com> wrote:
>
>> Team,
>> I have the following issue any idea why, we have a device that arps for
>> different link local addresses and the switch replies to each arp request with
>> its own MAC bon behalf of other devicesb. Do you have any theories as to
>> why we would see this behavior.
>>
>> Regards,
>>
>> J.
>>
>>
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-- 
Carlos G Mendioroz  <tron_at_huapi.ba.ar>  LW7 EQI  Argentina
Blogs and organic groups at http://www.ccie.net