How to disable Proxy ARP for Cisco 3560 ?

badalam_nt · ‎01-20-2009

I used PacketTracer5 to simulate some configurations and observed that 3560 layer3 switch performed Proxy ARP function.

How can I disable Proxy ARP function ?

massimiliano.serafino · ‎01-20-2009

Hi,

In order to disable proxy arp, in interface configuratin command type:

no ip proxy-arp

I hope this helps.

Best regards.

Massimiliano.

badalam_nt · ‎01-20-2009

Massimiliano, I don't have this command in PacketTracer5. Does it mean I can't disable Proxy-ARP for 3560 in PacketTracer5 ?

mahmoodmkl · ‎01-20-2009

Hi

Proxy Arp is disabled under L3 interfaces.

If u 3560 is doing intervlan routing then u need to go under the specific SVI of the vlan and issue the command as specified in the above post.

Thanks

Mahmood

badalam_nt · ‎01-20-2009

I use 2 vlans, and have an IP on each vlan.

But I can't find the command to enable/disable Proxy ARP even after I issue the "interface vlan x" command.

I draw the conclusion that the ProxyARP is automatically enabled for 3560 in the PacketTracer5 by performing:

#show arp

and then observing that a row contained the IP address of a destination host (initially I sent a ping from one host to this host) associated with the MAC address of the 3560 vlan interfaces.

So the 3560 responded to ARP for discovering the MAC associated to destination host with MAC address of its vlan interfaces.