Brocade Communications Systems Mobility 7131 Series Service Manual download pdf (Page 271)

Brocade Mobility 7131 Access Point Product Reference Guide 259

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2. Refer to the Spanning Tree Info field to for details on spanning tree state, and root access point

designation.

3. Refer to the Port Interface Table to assess the state of the traffic over the ports listed within

the table for the root and bridge and designated bridges.

4. Click the Logout button to securely exit the Access Point applet. There will be a prompt

confirming logout before the applet is closed.

Spanning Tree State Displays whether the spanning tree state is currently enabled or disabled. The spanning

tree state must be enabled for a unique spanning-tree calculation to occur when the bridge

is powered up or when a topology change is detected.

Designated Root Displays the access point MAC address of the bridge defined as the root bridge in the

Bridge STP Configuration screen. For information on defining an access point as a root

bridge, see Setting the LAN Configuration for Mesh Networking Support on page 9-447.

Bridge ID The Bridge ID identifies the priority and ID of the bridge sending the message

Root Port Number Identifies the root bridge by listing its 2-byte priority followed by its 6-byte ID.

Root Path Cost Bridge message traffic contains information identifying the root bridge and the sending

bridge. The root path cost represents the distance (cost) from the sending bridge to the

root bridge.

Bridge Max Msg. Age The Max Msg Age measures the age of received protocol information recorded for a port,

and to ensure the information is discarded when it exceeds the value set for the Maximum

Message age timer. For information on setting the Maximum Message Age. For information

on setting the Bridge Max Msg. Age, see Setting the LAN Configuration for Mesh

Networking Support on page 9-447.

Bridge Hello Time The Bridge Hello Time is the time between each bridge protocol data unit sent. This time is

equal to 2 seconds (sec) by default, but can tuned between 1 and 10 sec. For information

on setting the Bridge Hello Time, see Setting the LAN Configuration for Mesh Networking

Support on page 9-447. The 802.1d specification recommends the Hello Time be set to a

value less than half of the Max Message age value.

Bridge Forward Delay The Bridge Forward Delay value is the time spent in a listening and learning state. This time

is equal to 15 sec by default, but you can tune the time to be between 4 and 30 sec. For

information on setting the Bridge Forward Delay, see Setting the LAN Configuration for

Mesh Networking Support on page 9-447.

Port ID Identifies the port from which the configuration message was sent.

State Displays whether a bridge is forwarding traffic to other members of the mesh network (over

this port) or blocking traffic. Each viable member of the mesh network must forward traffic

to extent the coverage area of the mesh network.

Path Cost The root path cost is the distance (cost) from the sending bridge to the root bridge.

Designated Root Displays the MAC address of the access point defined with the lowest priority within the

Mesh STP Configuration screen.

Designated Bridge There is only one root bridge within each mesh network. All other bridges are designated

bridges that look to the root bridge for several mesh network timeout values. For

information on root and bridge designations, see Setting the LAN Configuration for Mesh

Networking Support on page 9-447.

Designated Port Each designated bridge must use a unique port. The value listed represents the port used

by each bridge listed within the table to route traffic to other members of the mesh network.

Designated Cost Displays the unique distance between each access point MAC address listed in the

Designated Bridge column and the access point MAC address listed in the Designated Root

column.

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Brocade Communications Systems Mobility 7131 Series Service Manual Page 271

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