Renaming the Wireless LAN Controller

[alex.dersch]

Hello Team,

i would like to rename the WLC and assign a new IP address to the device. is there anything to consider when doing this. For example certificates and so on.

thanks

alex

[Surendra BG]

Hi Alex,

This is how we do it..

From the WLC GUI >> Monitor >> Contrroller >> General >> Here Rename the WCL name on the System Name. >> Apply.

To change the IP address,

WLC GUI >> Monitor >> Controller >> Interfaces >> MANAGEMENT >> Enter the new Ip address here. >> Apply.

Q1>> is there anything to consider when doing this. For example certificates and so on.

ANS - This has nothing to do with Certs.. but if you are making the changes to AP-Manager Interface, then there is a chance that all the APs will get disassociated and re-register back!!

lemme know if this answered your question..

Regards
Surendra
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[alex.dersch]

Does it mean, when changing the ip address, the new ip address is populated to the access points?

[Surendra BG]

Hi,

Changing the management interface IP will not cause anything to the AP and AP will have no idea about the Change.. unless the IP is not reachable where we may lose the connectivity.. But changing the AP-manager will have an affect and after changing it, the AP will re join the WLC by communicating with the new AP-manager IP..

lemme know if this answered your question..

Regards
Surendra
====
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[wireless wlc]

If you are having wlc 5508 and not using ap managers , changing your management interface IP will cause AP's to reset i belive.

regards

Joe

[George Stefanick]

Alex,

Dont forget when you change the controller IP it could break other things for example:

WCS -- You add the controller by IP in WCS. Which means this will break

Mobility Group -- You add this by IP and mac address in the mobility groups. Which means mobility will break

ACS -- If you use radius (ACS) for example, you enter the managment IP into ACS for authorization

TACACS+ -- Here again, if you change the IP you wil break TACACS

I hope these help ...

please remember to rate post that you find helpful!

[alex.dersch]

Thanks George,

just a last question, which interface does the access points use to communicate with the wireless controller? the management interface or the ap manager. should ap-manager and management interface be in different VLAN's?

Interface Name                   Port Vlan Id  IP Address      Type    Ap Mgr Guest
-------------------------------- ---- -------- --------------- ------- ------ -----
ap-manager                       LAG  220      192.168.254.126 Static  Yes    No
busu_wifi_guest                  LAG  500      172.24.6.4      Dynamic No     No
busu_wifi_prod                   LAG  410      172.24.5.4      Dynamic No     No
management                       LAG  220      192.168.254.125 Static  No     No
service-port                     N/A  N/A      10.0.128.8      Static  No     No
virtual                          N/A  N/A      1.1.1.1         Static  No     No

[George Stefanick]

As Scott pointed out, the APs terminate their tunnels to the AP manger  interface on the WLC. It is also recommened to keep them on the same  vlan as the managment interface. It keeps things simple ...

[LeGrandCondePrinceDuSang]

I know I won't win a popularity contest in the devoted world of Cisco followers, but the more I learn about the technology, the more I am concerned that some of you do NOT grasp the severity of abuses in the wrong hands by your products! I am one example. Fairly ignorant about tech and cyber security until recently, and someone who had access to my devices and credentials, did exactly what most of your community posts and Cisco releases showcase. He hacked my systems for over a year by installing a Cisco Virtual Remote controller, which He renamed with the brand name of my ISP provider cable package and assigned the IP 191.169.1.100 

I always thought it was funny when I would see "ISPTV_0025(...) joined" appear on the screen of the TV and disappear. Little did I know about the expired memberships...

And the worst part is that the whole culture at Cisco is to say :"Oh well! You don't have the contract number... stay hacked!" 

Anyhow...

[Scott Fella]

Ap communicate with the WLC via AP Manager interface and they should be in the same vlan.

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