Does anyone know, can a MAC address of lightweight AP be changed? I am trying, this works conf t int f0 mac-address A.A.A but cannot store the config. The MAC address returns to its original valu after reload of AP.
My guess is the MAC address cannot be changed on lightweight AP, I guess the certificate and maybe some other settings are linked with the MAC address and it is not possible to change the MAC address, but not 100% sure.
I am asking because of the bug, see below. It would be nice if one can just change the MAC address of AP so that it begins with 00
Symptom: An access point running 18.104.22.168 code may be unable to join a WLC5508. Messages similar to the following will be seen on the AP.
%CAPWAP-3-ERRORLOG: Invalid AC Message Type 4. %CAPWAP-3-ERRORLOG: Unencrypted non-discovery CAPWAP Control Message
Conditions: At least one of the following conditions pertains:
- The high order byte of the AP's MAC address is nonzero, and the AP is in the same subnet as the WLC5508's management (or AP manager) interface
- The WLC's management (or AP manager) interface's default gateway's MAC address' high order byte is nonzero.
If the MAC address of the WLC's default gateway does not begin with 00, and if all of the APs' MAC addresses begin with 00, then: you can put the APs into the same subnet as the WLC's management (or AP manager) interface.
In the general case, for the situation where the WLC's default gateway's MAC does not begin with 00, you can address this by changing it to begin with 00. Some methods for doing this include:
-- use the "mac-address" command on the gateway, to set a MAC address that begins with 00
-- then enable HSRP on the gateway (standby ip ww.xx.yy.zz) and use this IP as the WLC's gateway.
For the case where the APs' MAC addresses do not begin with 00, then make sure that they are *not* in the same subnet as the WLC's management (AP manager) interface, but are behind a router.
Another workaround is to downgrade to 22.214.171.124. However, after downgrading the WLC to 126.96.36.199, any APs that have 188.8.131.52 IOS (i.e. 12.4(21a)JA2) still installed on them will be unable to join. Therefore, after downgrading the WLC, the APs will need to have a pre-12.4(21a)JA2 rcvk9w8 or k9w8 image installed on them.
Transferring Crash file from standby: Login to the Active WLC in HA.
From CLI: (Cisco Controller) >transfer upload datatype crash (Cisco
Controller) >transfer upload filename (Cisco
Controller) >transfer upload mode tftp (Cisco Controller) >transfer
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