A Wireless LAN Context Control Protocol (WLCCP) is used to establish and
manage a wireless network topology and securely manages the "operational
context" for mobile stations in a campus network. The WLCCP registration
protocol can automatically create and delete links in the network,
securely distribute operational context, and reliably establish Layer 2
forwarding paths on wireless links. A single infrastructure node is
established as the central control point for each subnet, and enables APs
and MNs to select the parent node that provides the "least-cost path" to
a backbone LAN. Context messages provide a general-purpose transport for
context and management information. WLCCP "Trace" messages facilitate
network diagnostic tools. Ethernet or UDP/IP encapsulation can be used
for WLCCP messages. Ethernet encapsulation is employed for intra-subnet
(e.g. AP-to-AP or AP-to-SCM) WLCCP messages. IP encapsulation is used for
inter-subnet WLCCP messages and may also be used for intra-subnet WLCCP
messages.