Moxa PM-7200-6MSC [125/155] Spanning tree max age
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Moxa PM-7200-6MSC [125/155] Spanning tree max age

Moxa PM-7200-1MST [125/155] Spanning tree max age
Moxa Command Line Interface (FW_4.x) Commands
2-116
Defaults Hello time = 2 sec.
Command
Modes
Redundancy configuration
Usage
Guidelines
2*( hello-time + 1.0 sec) <= max-age <= 2*( forward-delay - 1.0 sec)
Examples
PT-7828(config-rdnt)# spanning-tree hello-time
<UINT:seconds> - Range from 1 to 2 seconds
Error
messages
BPDU hello time must be in the range from 1 to 2 sec.
The formula must be obeyed:
2 x (Hello Time + 1 sec) <= Max age <= 2 x (Forward Delay - 1 sec)
Related
commands
spanning-tree forward-delay
spanning-tree max-age
show redundancy spanning-tree
spanning-tree max-age
Use the spanning-tree max-age redundancy configuration command on the switch to set the interval
between messages that the spanning tree receives from the root switch. If a switch does not receive a bridge
protocol data unit (BPDU) message from the root switch within this interval, it recomputes the spanning-tree
topology. Use the no form of this command to return to the default setting.
Commands
spanning-tree max-age seconds
no spanning-tree max-age
Syntax
Description
spanning-tree Configure spanning tree
max-age Configure spanning tree max age
seconds Range from 6 to 40 seconds
Defaults Forward delay = 20 sec.
Command
Modes
Redundancy configuration
Usage
Guidelines
2*( hello-time + 1.0 sec) <= max-age <= 2*( forward-delay - 1.0 sec)
Examples
PT-7828(config-rdnt)# spanning-tree max-age
<UINT:seconds> - Range from 6 to 40 seconds
Error
messages
The BPDU forward delay time must be in the range from 4 to 30 sec.
The formula must be obeyed:
2 x (Hello Time + 1 sec) <= Max age <= 2 x (Forward Delay - 1 sec)
Related
commands
spanning-tree forward-delay
spanning-tree max-age
show redundancy spanning-tree
spanning-tree mst cist cost
Use the spanning-tree mst cist cost interface configuration command on the switch to set the port cost of
the Multiple Spanning Tree (MSTP). Use the no form of this command to return to the default setting.
Commands
spanning-tree mst cist cost cost
no spanning-tree mst cist cost
Syntax
Description
spanning-tree Configure spanning tree
mst Configure mstp
cist Configure mstp cist port

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