I recently took over the wireless for my organization because the previous administrator left. We are a HealthCare organization with multiple onsite Campus Buildings within 1/4 of a mile of each other connected via fiber. We have recently added a large number of access points to both our main hospital as well as some of the other Campus buildings because of a recent roll out of a particular hospital application that all of the physicians need. My concern is that the way that the Wireless network was initially designed that in it's current topology we will experience latency problems. Which I was told last week we started having. We have 2 Cisco 5508 Wireless Controllers (wifictrl1) and (wifictrl2). Each attached to a Cisco 6509E Series Core Router respectively ( Wifictrl1-------> Core A) (Wifictrl2 ------> Core B) via 4 Gig LAG trunks. Both of the wireless controllers are configured in the same mobility group.
Controller firmware version : 126.96.36.199
Network Setup :
Both the wireless controllers management interfaces are configured on vlan 240. (172.20.240.x 255.255.240.0 )
Virtual Interfaces on both controllers are 188.8.131.52
Service Port 192.168.1.1
We have one SSID (mmg_wireless) that is setup for clients to connect to throughout the entire organization. Everyone connects to this SSID for all hospital application resources. When clients connect to this SSID a dhcp server gives them an ip address on the vlan 240 (172.20.242.0 - 172.20.248.255)
My questions are as follows:
Is it Cisco best practices to create one large Vlan that contains both controllers, ap's and clients all in the same network ? Or should I be segmenting the network a particular way?
With my current Wireless Controllers is it possible to segment the wireless network by building into seperate networks (vlans)
but still allow clients to connect to the (mmg_wireless) ssid and roam throughout the campus without mobility and roaming issues?
Is it necessary to segment my wireless network by creating more vlans instead of putting all of the ap's controllers and clients all in the same network? Will having all of my wireless devices in the same subnet degrade my wireless network because everything is in the same broadcast domain?
Is there a maximum recommended number of ap's that should be on a controller at any given moment? I currently have 200 ap's on one controller.
with 672 clients currently conencted to them. (360 of them are connected to the mmg_wireless ssid) .
Is it best practice to seperate the maangement ip's of the controllers and ap's from the client vlans?
That is all for now. I am new to wireless , but I am learning more and more everyday. Any help is appreciated.
Please let me know if I need to provide additional information . I would be glad too.