The default is 2 seconds.
3. Change the max-age parameter.
PROTOCOL MSTP mode
max-age seconds
The range is from 6 to 40.
The default is 20 seconds.
4. Change the max-hops parameter.
PROTOCOL MSTP mode
max-hops number
The range is from 1 to 40.
The default is 20.
Example of the forward-delay Parameter
To view the current values for MSTP parameters, use the show running-config spanning-tree
mstp command from EXEC privilege mode.
Dell(conf-mstp)#forward-delay 16
Dell(conf-mstp)#exit
Dell(conf)#do show running-config spanning-tree mstp
!
protocol spanning-tree mstp
no disable
name my-mstp-region
MSTI 1 VLAN 100
MSTI 2 VLAN 200-300
forward-delay 16
MSTI 2 bridge-priority 4096
Dell(conf)#
Enable BPDU Filtering Globally
The enabling of BPDU Filtering stops transmitting of BPDUs on the operational port fast enabled ports by
default.
When BPDUs are received, the spanning tree is automatically prepared. By default global bpdu filtering is
disabled.
Enable BPDU Filter globally to filter transmission of BPDU port fast enabled interfaces.
PROTOCOL MSTP mode
Multiple Spanning Tree Protocol (MSTP)
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