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Manageable Mosaic switch Installation and User Guide
To configure RSTP
Click on the Features icon and select from the Features menu the RSTP
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Settings tab. The following screen is displayed:
Figure 3-26 RSTP Settings tab
Note: The tab displays the factory default RSTP settings.
Update the following fields as required:
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Priority: This is the user assigned switch priority that is used by the RSTP switches in
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the network for selecting the root switch. Enter a value from 4096 – 61440, in
increments of 4096.
Bridge Max. Age: Determines the amount of time protocol information received on a
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port is stored by the switch. Enter a value between 2 – 60 seconds.
Bridge Hello Time: Determines how often the switch broadcasts hello messages to
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other network devices. Enter a value from between 2 – 60 seconds.
Bridge Fwd. Delay: Determines how long each of the listening and learning states last
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before the port begins forwarding. Enter a value between 2 – 60 seconds.
NOTE: According to the Spanning Tree IEEE802.1D protocol; a Bridge shall enforce the
following relationships:
2 X (Bridge_Forward_Delay - 1.0 seconds) >= Bridge_Max_Age
Bridge_Max_age >= 2 X(Bridge_Hello_Time +1.0 seconds)
After network stabilization the following read only fields will be updated
according to the RSTP results:
Designated Root: The details (priority and MAC address) of network device that was
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selected as the root switch.
Root Cost: The sum of hop costs toward the root switch.
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Root Port: The port through which traffic is forwarded towards the root switch. Expand the
RSTP Ports Configuration tab (see , set up the following parameters for each port
configured in the network topology:
SUMMARY
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