Information About Map Server Per Site Support
The Map Server Per Site feature supports per-site map server and the selection of map server based on the client's subnet. This enables the controller to support multiple sites and to segregate each site's traffic.
This feature is applicable to both Enterprise and Guest map servers. For the Layer 2 virtual extensible LAN network identifier-based (L2VNID-based) map server, the appropriate map server should be selected based on the L2 VNID.
The following list shows the map server selection order for AP query and client registration:
Per-L3 VNID map server
Per site (ap-group) map server
Default or global map server
Some of the benefits of using Map Server Per Site feature are listed below:
You can use a single large site with horizontal scaling of the map server and border nodes.
You can share the controller across multiple sites, with each site can having its own map server and virtual network or VNID and still segment traffic from each site.
You can share Guest map-server across multiple sites while keeping the Enterprise map-server separate.
You can use the same SSID across different sites. Within a site, they can belong to a different virtual network domain.