Question

Change BSSID on Cisco 1242 AP

Asked by: ikalmar

Hi, I would like to change BSSID on Guest SSID to 0011:2233:4455 MAC on 1242 AP!

dot11 ssid Guest
   guest-mode
!         
power inline negotiation prestandard source
!
!
!
bridge irb
!
!
interface Dot11Radio0
 mac-address 0003.52ae.3659
 no ip address
 no ip route-cache
 !
 ssid Guest

                                  
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Asked On
2009-09-04 at 03:12:21ID24707198
Tags

Change BSSID

Topics

Wireless Local Area Network

,

Network Routers

Participating Experts
2
Points
500
Comments
16

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Answers

 

by: wiscomPosted on 2009-09-04 at 03:45:08ID: 25258220

Hi,

Config t [enter]
interface Dot11Radio0 [enter]
 no mac-address 0003.52ae.3659 [enter]
 mac-address 0011.233.4455 [enter]
 shut [enter]
 no shut [enter]
end [enter]
end [enter]

A/
 

 

by: ikalmarPosted on 2009-09-04 at 04:32:36ID: 25258462

I tried it...:)
But it isn't working, the connected WIFI cilents, it showing the base MAC:(

 

by: ikalmarPosted on 2009-09-04 at 05:57:09ID: 25259059

The problem, if I change it below the Dot11Radio config nothing happening:(

  Hardware is 802.11G Radio, address is 0025.b4a6.ba00 (bia 0025.b4a6.ba00)

sh int dot11Radio 0
Dot11Radio0 is up, line protocol is up 
  Hardware is 802.11G Radio, address is 0025.b4a6.ba00 (bia 0025.b4a6.ba00)
  MTU 1500 bytes, BW 54000 Kbit, DLY 1000 usec, 
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, output 01:16:05, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/1127/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/30 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     24915 packets input, 1054439 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 input packets with dribble condition detected
     572 packets output, 17156 bytes, 0 underruns
     0 output errors, 0 collisions, 9 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out

                                              
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by: wiscomPosted on 2009-09-04 at 06:00:01ID: 25259089

Hi,

Why you want to change the mac address ?

A/

 

by: ikalmarPosted on 2009-09-04 at 06:06:51ID: 25259173

Becouse we would like to test a wireless IPS/IDS system:)

 

by: mikecrPosted on 2009-09-04 at 12:52:29ID: 25262812

Do you have vlans configured on the access point? I don't think that works if vlans are configured.

 

by: ikalmarPosted on 2009-09-04 at 12:53:55ID: 25262822

No, there is no vlans configured.....

 

by: wiscomPosted on 2009-09-04 at 13:30:41ID: 25263099

Hi,

Try to configure HSRP on the Dot11Radio 0 interface ...

http://www.cisco.com/en/US/docs/internetworking/case/studies/cs009.html

A/

 

by: ikalmarPosted on 2009-09-05 at 00:31:05ID: 25265243

The dot11 interface never accept HSRP:)

 

by: wiscomPosted on 2009-09-10 at 01:39:49ID: 25298321

Hi,

I maybe found a solution ! How about changing the MAC address with use of the cookie ?

You need to enter the priv mode and change the MAC address, here is an example of a Cisco 800 serie router. I assume that this is the same on an Cisco 1242 AP ...

Calculate the cookie password!!
1- Switch the router on and press <CTRL-BREAK> (F5) to enter rommon.
System Bootstrap, Version 12.2(4r)XM2, RELEASE SOFTWARE (fc1)
TAC Support: http://www.cisco.com/tac
Copyright (c) 2002 by cisco Systems, Inc.
C800/SOHO series (Board ID: 20-62) platform with 32768 Kbytes of main memory
rommon 1 > cookie
cookie:
01 01 4f 0f ff 50 06 49 3e 00 01 ff 03 64 00 00
00 00 00 00 00 00 00 00 46 4f 43 06 50 30 50 37
58 04 01 f9 c0 00 00 00 00 ff ff ff 50 06 49 1f
1c 04 ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
Start the calculator in Windows and select the Scientific version.Choose for HEX and QWORD.The calculation is as follows:01 01 + 4f 0f + ff 50 + 06 49 + 3e 00. After each four characters press the add-button(+). At the end you should get this result: 193A9. The password is the last 4 characters 93A9.
rommon 2>priv
Password: 93A9
You now have access to the full set of monitor commands.
Warning: some commands will allow you to destroy your
configuration and/or system images and could render
the machine unbootable.
rommon 4 >

A/

 

by: wiscomPosted on 2009-09-10 at 01:44:02ID: 25298352

Hi,

Additional info. After you logged in the priv mode type cookie [enter] and you will enter a setup.

Change only the row with 00 25 b4 a6 ba 00 all the other setting stay the same. Compare with the current cookie settings ....

A/

 

by: ikalmarPosted on 2009-09-10 at 01:51:26ID: 25298393

ok, I try it nexr week and refer you:)

 

by: ikalmarPosted on 2009-09-16 at 22:48:38ID: 25353141

I regret to tell you but on the AP it isn't working:(

 

by: wiscomPosted on 2009-09-16 at 23:03:53ID: 25353178

Hi,

So I think the final conclusion is clear. it's not possible to change it ....

A/

 

by: ikalmarPosted on 2009-09-16 at 23:09:03ID: 25353195

but, I will get a 877W and try on it  next week:)

 

by: wiscomPosted on 2009-09-16 at 23:23:14ID: 25353248

Ok, keep us informed :)

A/

20120131-EE-VQP-002

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