Need change int d0 MAC address

Unanswered Question
Nov 22nd, 2008
User Badges:

How change MAC address after "bia"?

000f.f858.a9b5 (bia 000f.f858.a9b5)



conf t

int d0

mac-address AA.BB.CC


only change MAC address before "bia"



  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
gamccall Mon, 11/24/2008 - 05:18
User Badges:
  • Silver, 250 points or more

BIA means "burned-in address". You can't change the BIA.

serg_russ Tue, 11/25/2008 - 07:09
User Badges:

And what do next block


conf t

int d0

mac-address 1122.3344.5566


What reason ??

gamccall Tue, 11/25/2008 - 07:37
User Badges:
  • Silver, 250 points or more

That changes the mac address on that interface, for almost all practical purposes. If you set a custom mac address on an interface, the new mac will be used in preference to the BIA for everything except a few commands where you have the option to specify use of the BIA.

I can think of very few honest reasons for spoofing a mac address, though. What are you trying to accomplish?

serg_russ Wed, 11/26/2008 - 02:55
User Badges:

Just few MAC addresses our wireless network registered in control organisation. After this summer we lost this devices (into strong thunder). And register again will be a long time ))

Just bureaucracy situation

And just technical interes )

John_from_obninsk Wed, 09/23/2009 - 01:25
User Badges:

Hello, we have the same problem. How to change MAC-address on int do0 while Do0 in root access-point mode? Command mac-address xxxx.xxxx.xxxx doesn't do any changes even with shut/no shut. After no shut "show int do0" show that bia mac-address is active.


This Discussion



Trending Topics: Other Wireless Mobility

client could not be authenticated
Network Analysis Module (NAM) Products
Cisco 6500 nam
reason 440 driver failure
Cisco password cracker
Cisco Wireless mode