Cisco 5508 questions related to changing IP address scheme

Posted on 2011-05-12
Medium Priority
Last Modified: 2013-12-21
Started a new company where there is a Cisco 5508 with 12 APs.  I've always done autonomous AP.  Previous guy had controller siting on outside network in a single WLAN and single SSID.  New design calls for trunking to carry multiple SSIDs and moving all network cables to a chassis switch instead of having a physically separated switch for outside connections

Question - The AP's and 5508 controller have IP addresses that will need to be changed.  Which is done first.  Update all APs, then unplug/power down and move, then re-IP controller?  I'm also assuming all the AP connections have to move into a trunk configuration, too.
Question by:finfrockg
  • 3

Expert Comment

ID: 35749964
the AP connections do not need to be on a trunk. they tunnel all their traffic back to the controller on their own.

i'm not sure about the order of operations to change the IPs. the lightweight APs will pick up their IP configuration from the controller when they boot up. So you can probably update the AP addresses in the controller first, save that config, then readdress the controller, then plug into your new switch etc then power on.

you WILL however have to trunk the lines from the switch to the WLC though if you will have SSIDs across multiple vlans such as a public access hotspot

Expert Comment

ID: 35749991
OH, also make sure you've got an entry in your DNS for cisco-capwap-controller pointing to the controller's management IP

when the APs first boot up they'll grab a DHCP number and resolve the DNS entry to locate a controller to join to. i assume all APs are already in the auth list in the WLC

Author Comment

ID: 35750254
WLC will betrunked.  APs are in access mode not trunked but do they have to be on native VLAN as WLC or does it not matter?   My APs have static addresses.  Not sure why that was so important.  
I wasn't sure where that static address actually is retained in the controller or WLC.  

Accepted Solution

Dangle79 earned 1000 total points
ID: 35753842
Our APs are on our native vlan (10.1.x.x/16) but our controllers are actually on a separate management vlan (10.4.0.x)
The APs are assigned static addresses but when their fresh out of the box they'll pull dhcp to get started, and in either case will always hit DNS to find a controller.
In some configurations people enable telnet to the APs themselves, that'd be why they'd like to keep static addresses on them. For us, we don't, so I couldn't tell you why the decision was made to run static, i wasn't the one who set it up.
Screenshot is from the interface setup on my 5508. We don't use the service port, that's why it's, we've got our private 10.1 network and a public vlan defined.
Another thing i forgot to mention, if you're going to use LAG one the controller you'll want to configure a port-channel on the switch. We use a dual link port channel for ours just for redundancy

Featured Post

NFR key for Veeam Backup for Microsoft Office 365

Veeam is happy to provide a free NFR license (for 1 year, up to 10 users). This license allows for the non‑production use of Veeam Backup for Microsoft Office 365 in your home lab without any feature limitations.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Hopefully this article will help someone who's had the same issues I had. I have a Dell Wireless 1390 WLAN Mini-Card and Windows 7, and for the past couple of days I was beyond frustrated because my wireless laptop was not able to access the Inte…
In this article I will describe how to setup a Cisco WLC 5508 to work with Apple's Bonjour protocol across VLANs.  I will also discuss using screen mirroring and Airplay on an AppleTV v3.  This article covers the wireless network only and requires m…
This Micro Tutorial will show you how to maximize your wireless card to its maximum capability. This will be demonstrated using Intel(R) Centrino(R) Wireless-N 2230 wireless card on Windows 8 operating system.
Viewers will learn how to connect to a wireless network using the network security key. They will also learn how to access the IP address and DNS server for connections that must be done manually. After setting up a router, find the network security…
Suggested Courses

830 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question