User's Manual

Table Of Contents
3/11/05 Multiple-Cisco Wireless LAN Controller Deployments
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Controller GigE connections is active and the other is passive. Upon a network failure, the
active connection becomes passive, and the passive connection becomes active.
Figure - Typical Cisco Wireless LAN Controller Deployment
Multiple-Cisco Wireless LAN Controller DeploymentsMultiple-Cisco Wireless LAN Controller Deployments
Each Cisco Wireless LAN Controller can support Cisco 1000 Series lightweight access points across
multiple floors and buildings simultaneously. Similarly, each Cisco Wireless LAN Controller can support
Cisco 1000 Series lightweight access points across multiple floors and buildings simultaneously.
However, full functionality of the Cisco SWAN is realized when it includes multiple Cisco Wireless LAN
Controllers. That is, a multiple-Cisco Wireless LAN Controller system has the following additional
features over a single-Cisco Wireless LAN Controller deployment:
Autodetecting and autoconfiguring Cisco Wireless LAN Controller RF parameters as the Cisco
Wireless LAN Controllers are added to the network, as described in Radio Resource
Management (RRM).
Same-Cisco Wireless LAN Controller (Layer 2) Roaming and Inter-Subnet (Layer 3) Roaming.
Automatic Cisco 1000 Series lightweight access point failover to any redundant Cisco Wireless
LAN Controller with unused ports (refer to Cisco Wireless LAN Controller Failover Protection
).
The following figure shows a typical multiple-Cisco Wireless LAN Controller deployment, with the Cisco
Wireless LAN Controllers in Appliance Mode. The figure also shows an optional dedicated Service
Network, and the three physical connection types between the network and the Cisco Wireless LAN
Controllers, as further described in Network Connection to Cisco Wireless LAN Controllers
.
Note: Cisco Wireless LAN Controllers can connect through the Management Interface
to multiple subnets in the Network. This can be helpful, for instance, when Network
operators want to confine multiple VLANs to separate subnets using Oper-
ator-Defined Interfaces.