Configuring Global Mstp Parameters - TP-Link T2600G Series User Manual

Configuring Spanning Tree
Interface
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Gi1/0/3
Switch(config-if)#end
Switch#copy running-config startup-config

3.2.3 Configuring Global MSTP Parameters

Follow these steps to configure the global MSTP parameters of the switch:
Step 1 configure
Enter global configuration mode.
spanning-tree priority pri
Step 2
Configure the priority of the switch for comparison in CIST.
pri :
by 4096. The priority is a parameter used to determine the root bridge for spanning tree. The
switch with the lower value has the higher priority.
In STP/RSTP, the value is the priority of the switch in spanning tree. The switch with the highest
priority will be elected as the root bridge.
In MSTP, the value is the priority of the switch in CIST. The switch with the higher priority will be
elected as the root bridge in CIST.
Step 3 spanning-tree timer {[ forward-time forward-time ] [ hello-time hello-time ] [ max-age max-
age ]}
(Optional) Configure the Forward Delay, Hello Time and Max Age.
forward-time:
transition from listening to learning. The valid values are from 4 to 30 in seconds, and the default
value is 15. Forward Delay is used to prevent the network from causing temporary loops during
the regeneration of spanning tree. The interval between the port state transition from learning
to forwarding is also the Forward Delay.
hello-time:
valid values are from 1 to 10 in seconds, and the default value is 2. The root bridge sends
configuration BPDUs at an interval of Hello Time. It works with the MAX Age to test the link
failures and maintain the spanning tree.
max-age:
receiving a BPDU before attempting to regenerate a new spanning tree. The valid values are
from 6 to 40 in seconds, and the default value is 20.
Step 4 spanning-tree hold-count value
(Optional) Specify the maximum number of BPDU that can be sent in a second.
value:
values are from 1 to 20 pps, and the default value is 5.
Prio Cost Role
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144 200 N/A
Specify the priority for the switch. The valid value is from 0 to 61440, which are divisible
Specify the value of Forward Delay. It is the interval between the port state
Specify the value of Hello Time. It is the interval between BPDUs' sending. The
Specify the value of Max Age. It is the maximum time that the switch can wait without
Specify the maximum number of BPDU packets that can be sent in a second. The valid
Status LAG
LnkDwn N/A
MSTP Configurations
User Guide 419