HWIC-4ESW having same MAC address with fa0/0 from CISCO2811 router.

Unanswered Question
Sep 29th, 2008
User Badges:

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?

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 4 (1 ratings)
Loading.
ajagadee Mon, 09/29/2008 - 19:31
User Badges:
  • Cisco Employee,

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


** Please rate all helpful posts **



lee_boon_chong Sun, 10/05/2008 - 21:47
User Badges:

Hi Arul,


Thank's for your reply. Does it mean that no solution to aviod the ARP poisoning issue?


Regards

Actions

This Discussion