Chapter 5: Multiple Spanning Tree Protocol
90
Max Hop Count - The Maximum Hop Count is a parameter set in
a BPDU packet when it originates. It is decremented by 1 each
time it is retransmitted by the next bridge. When the Hop Count
value reaches zero, the bridge drops the BPDU packet. Its range is
6 - 40 hops.
5. Once you have configured the parameters, click Apply. Clicking this
button activates MSTP and the above parameters on the switch.
At the bottom section of the page, the following fields are listed:
You cannot change these fields.
Root Bridge - The Root Bridge is the MAC address of the bridge.
The root bridge identifier is used as a tie breaker in the selection of
the root bridge when two or more bridges have the same bridge
priority.
Root Cost - The sum of all root port costs of all bridges between
the switch’s root port and the root bridge including the switch’s root
port cost.
Root Maximum Age - Displays the maximum amount of time that
BPDUs are stored before being deleted on the root bridge.
Root Forward Delay - Displays the time interval between
generating and sending configuration messages by the root bridge.
Root Port - The active port on the switch that is communicating
with the root bridge. If the switch is the root bridge for the LAN,
then there is no root port, and the root port parameter is set to 0.
6. From the main menu on the left side of the page, select Save Settings
to Flash to permanently save your changes.
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