[c-nsp] 3560 SVI

Tóth András diosbejgli at gmail.com
Tue Nov 16 16:13:19 EST 2010


In case there's no ip routing enabled and no ip default-gateway
configured either, the switch will try ARPing the destination IP as it
was directly connected. As highlighted by others, neighboring devices
will reply if proxy-arp is enabled and if they have a valid route
towards that destination.

Andras


On Tue, Nov 16, 2010 at 9:56 PM, Sharlon R. Carty <me at sharloncarty.net> wrote:
> Was an incomplete config. Intention was to add ip routing, gateway, all that
> good stuff later on.
> was surprised that it was actually accessible remotely.
>
> On Tue, Nov 16, 2010 at 3:23 PM, Peter Rathlev <peter at rathlev.dk> wrote:
>
>> On Tue, 2010-11-16 at 14:59 -0400, Sharlon R. Carty wrote:
>> > Looks like it's that. did a show arp and saw the arp entries.
>> > So best practice is to disable proxy-arp on the interfaces?
>>
>> Yes, on all neighboring devices. The switch itself isn't a problem, only
>> devices that route.
>>
>> Any special reason not to have a default gateway though?
>>
>> --
>> Peter
>>
>>
>>
>
>
> --
> --sharlon
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