09-29-2008 01:40 AM - edited 03-09-2019 09:34 PM
Hi Expert, I Have a situation where a 2811 is configured with 2 VLANs from HWIC-4ESW module, different ports configured, however the VLAN interfaces have the same mac-address with fa0/0 which causes ARP poisoning problem. It that anyway to solve this problem?
09-29-2008 02:27 AM
Contact Cisco TAC.
09-29-2008 07:31 PM
Hi Lee,
My understanding is, this is expected behavior and is due to the hardware limitation of the HWIC-4ESW Module. And I think the HWIC-4ESW Module (at least from my lab testing) always takes the MAC Address of the first on board LAN Interface.
Also, I am able to change the MAC Address of the first on board LAN Interface (Ex.Gig0/0) but I cannot change the MAC Address of the VLAN SVI.
I hope it helps.
Regards,
Arul
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10-05-2008 09:47 PM
Hi Arul,
Thank's for your reply. Does it mean that no solution to aviod the ARP poisoning issue?
Regards
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