Cisco WLC 2540 Disabling Lag Mode

Just wanted ask this question before doing this remotely.  I have a client with a Cisco WLC 2540 it is currently in lag mode.  I would like to disable lag mode to setup a guest SSID because I need to configure another port on the WLC that is on the same subnet as the guest port on the Cisco ASA 5505.  I guess my question is when disabling lag I do not want to loose connection to the WLC and not be able access it.  I have port 1 on the WLC plugged into a netgear switch on the internal network.  Should I be concerned about trying to do this remotely.  Thanks
Don ColemanOwnerAsked:
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Zephyr ICTCloud ArchitectCommented:
Well, you might be in luck if port1 comes up and you are able to reach the WLC after removing/disabling the LAG, but I'd be concerned doing it remotely.

These things happen when disabling LAG according to Cisco:
When you disable LAG, the management, static AP-manager, and dynamic interfaces are moved to port 1.
When you disable LAG, you must configure primary and secondary ports for all interfaces.
When you disable LAG, you must assign an AP-manager interface to each port on the controller. Otherwise, access points are unable to join.

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Craig BeckCommented:
The real point here is that when you disable LAG the management traffic will all be untagged.  You don't need to assign a backup port for each interface but you can if you want to.  There's no ap-manager interface on a 2504 if the code supports LAG - it's just the management interface.

On the switch you need to set the port where WLC port 1 connects to as an access port on the VLAN that the WLC management interface was on previously, then break LAG and reboot the WLC.

You can probably do what you want without breaking LAG though.  Does the ASA guest port connect to the same switch as the WLC's ports?
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Don ColemanOwnerAuthor Commented:
There are no vlans configured on the switch as it is not a manageable switch.
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Craig BeckCommented:
Ok, just break LAG then.  The management interface will go to Port 1 automatically and all traffic will be untagged.

Make sure you connect Port 2 from the WLC to a different switch or directly to the ASA Guest port.

I would err on the side of caution and get the console port of the WLC connected to a wired PC or laptop that you can access remotely just in case the management port doesn't come up.  You should be ok, but better safe than sorry.
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Don ColemanOwnerAuthor Commented:
Ok, thanks.  I am going to prompt them to hookup the cable to port 2 on the WLC and port 7 on the ASA which is the guest.  I will send them a console cable just in case.  Thanks
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DonbooCommented:
My personal experience with LAG disabling/enabling is that it require a reboot of the WLC to take effect and no matter what the WLC say you lose access the moment you press yes in the WLC so you have to access it via console to save the config and issue reload command

Get an PC connected with console access.
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Don ColemanOwnerAuthor Commented:
Thanks Guys
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Craig BeckCommented:
With respect, the wrong answer was chosen.
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Don ColemanOwnerAuthor Commented:
Ok, I gave all people credit for input that I found useful not exactly sure what you consider the right answer but in my opinion I gave the credit as I felt necessary.
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Don ColemanOwnerAuthor Commented:
Sorry if I offended as I gave you the most credit as I found your answer supplied the most useful info but found the other 2 answers to supply valuable info also which is why I add them as addition solutions so other people would see all 3 solutions which I think will give them the info needed if they run across a similar scenario.
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Don ColemanOwnerAuthor Commented:
Oops, didn't realize that was the ultimate solution and yours was an assisted.  Can I change to put you as the Accepted solution.
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Don ColemanOwnerAuthor Commented:
Sorry, did not realize never had more than one solution before thought all 3 were split as accepted solutions.  If I can change it I definitely will as like I said I found your solution to have the most valuable info.
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