Brocade Communications Systems RFS6000 System Reference Manual page 326

5
Layer 3 mobility
3. Refer to the following information within the Peer Statistics tab:
312
Peer IP Displays the IP addresses of the peer controllers within the mobility domain. Each
peer can support up to 500 Clients.
JOIN Events
Displays the number of JOIN messages sent and received. JOIN messages
advertise the presence of Clients entering the mobility domain for the first time.
sent/rcvd
When a Client (currently not present in the Client database) associates with a
controller, it immediately sends a JOIN message to the host controller with MAC,
VLAN and IP information (both current and home controller IP info). The home
controller forwards the JOIN to all its peers (except the one from which it received
the original message). JOIN messages are always originated by the current
controller. JOIN messages are also used during the home controller selection
phase to inform a candidate home controller about a Client. The current controller
selects the home controller (based on its local selection mechanism) and sends a
JOIN message to the home controller that is forwarded it to all its peers.
LEAVE Events
Displays the number of LEAVE messages sent and received. LEAVE messages are
sent when the controller decides a Client originally present in the Client database
sent/rcvd
is no longer present in the mobility domain. The criterion to determine the Client
has actually left the network is implementation specific. The current controller
sends the LEAVE message with the Client's MAC address information to the home
controller, which eventually forwards the message to each mobility peer.
Brocade Mobility RFS6000 and RFS7000 System Reference Guide
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