Hello all -
I'm new at this, so please bear with me.
I've been tasked to add a second WLC to a customer's network. They currently have a 4402-50 supporting 47 access points. The customer purchased a 3750G w/ integrated WLC (50AP) anticipating the addition of several more APs, but the addition is on hold. In the meantime, the customer would like the new WLC to help balance the AP load. The existing WLC is running 22.214.171.124. The customer has a mix of 1130, 1240, 1140 and 1250 APs. They are starting to use N features.
Both controllers are now on the same subnet 10.1.113.x. I've upgraded the code on the 3750G_WLC to match the other controller. Here are some questions I have now:
1. Am I right to think I need to set these two controllers in the same mobility group?
2. Am I right in thinking I will need to manually configure each AP to point to the controller I want it to be associated with? In other words, is there an AUTOMATIC load balancing feature? (NOTE: The customer just purchased and will have installed WCS)
3. Once we exceed 50 APs, will any other configuration changes need to happen?
This is all a little sketchy for me because we are right at the limit. So.. right now we are N+1 asking to load balance between the two. Once we exceed 50 APs, we're no longer N+1 and will need to designate which APs are high priority in case of failover.
Any tips on installing this second WLC into the network and any recommendations you may have for managing these 47 existing APs is appreciated.
So, when you define primary and secondary Controller, you specify the name of the controller. In 5.2 and above you also can specifiy the Management IP address of that controller. The AP will learn about these controller through the mobility group defined on the controllers.
About losing the controller, I didn't mean to configure priority after the fact. I meant that if you are trying to define priority (for the event that a controller was lost), then you would set the priority on the High Avail tab on the AP configuration. You would want to this when you install everything to begin with.
If you do not define primary/secondary, the AP should learn about the controllers from each controller, and when the controller sends its discovery replies, it should specify which one to load-balance to. Or something like that.
The bottom line is that if you don't have a primary/secondary defined, then the AP discovery process should get your AP on the least occupied controller. It is primary/secondary definitions that kind of overwrite this, which is what I was calling a "manual" load-balancing...
Does that help any more?