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Brocade Mobility 7131 Access Point Product Reference Guide (Supporting software release 4.4.0.0 and later) User Manual

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Brocade Mobility 7131 Access Point Product Reference Guide

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6. Click OK to return to either the LAN1 or LAN2 screen where updates to the Mesh STP

Configuration can be saved by clicking the Apply button.

7. Click Cancel to discard the changes made to the Mesh STP Configuration and return to the

LAN1 or LAN2 screen. Once the Mesh STP Configuration is defined, the access point’s radio
can be configured for base and/or client bridge support.

Priority Set

the

Priority

as low as possible for a to force other devices within the mesh network to

defer to this client bridge as the bridge defining the mesh configuration (commonly referred
to as the root). Brocade Mobility recommends assigning a Base Bridge AP with the lowest
bridge priority so it becomes the root in the STP. If a root already exists, set the Bridge
Priorities of new APs accordingly so the root of the STP doesn't get altered. Each access
point starts with a default bridge priority of 63335.

Maximum Message
age

The

Maximum Message age

timer is used with the Message Age timer. The Message

Age timer is used to measure the age of the 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.

Hello Time

The

Hello Time

is the time between each bridge protocol data unit sent. This time is equal

to 2 seconds (sec) by default, but you can tune the time to be between 1 and 10 sec. If you
drop the hello time from 2 sec to 1 sec, you double the number of bridge protocol data
units sent/received by each bridge. The 802.1d specification recommends the Hello Time
be set to a value less than half of the Max Message age value.

Forward Delay

The

Forward Delay

is the time spent in the 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. The 802.1d
specification recommends the Forward Delay be set to a value greater than half the Max
Message age timeout value.

Forwarding Table
Ageout

The Forwarding Table Parameter value defines the length of time an entry will remain in the
a bridge’s forwarding table before being deleted due to lack of activity. If the entry
replenishments a destination generating continuous traffic, this timeout value will never be
invoked. However, if the destination becomes idle, the timeout value represents the length
of time that must be exceeded before an entry is deleted from the forwarding table.