2 5508's connecting to 2 6500 switches

Question

Looking to design for redundancy and mobility. My initial plan was to use LAG on both but I am confused on the setup because typcially all interfaces on these two switches are setup with HSRP. Does anybody have a matching configuration example they can share? Also looking to map multiple vlans to one SSID and using AD groups. Additional info is that this is for a large campus with multiple distribution areas but looking to just have consolidated WLC infrastructure at one location. Multiple GIG connections exist to all distribution points. Last note plan is to just use two of the 8 ports on each 5508.
All the guides aren't quite bringing together for me the best practice for this setup.
Thanks,
Andrew

Answer 1

Well you must understand, that if the WLC1 fails, then there will be a temporary lose of service until the AP's on WLC1 fails to WLC2.  This is for local mode ap's and this means that all traffic will be tunneled back to the WLC's and the layer 3 subnet needs to reside on the 6500's.  If you have remote sites that you want ap's and maybe don't have over 50, you can setup the ap's in h-reap mode (flexconnect) and the subnet's the users get placed on is the local subnet at the remote site.  So in this scenario, if WLC1 goes down, and remote site 1 has ap's on WLC1, the ap's stay up and traffic still flows normally.  You have two options in h-reap mode.... centrally switched which means tunnel traffic back to the WLC or locally switched where traffic is switched locally at that site.  When AP's are in local mode, the hard failure of the WLC will always disrupt the client devices just for a little (minute or less) until the AP's move to the other WLC.  When WLC1 comes back online, the AP's will move back with little to no disruptions.
You will configure mobility between the two WLC's so that each WLC will know of clients that might roam to an AP on the other WLC.  This also is required for the AP's to know about the other WLC.