Multiple Spanning Tree Protocol (MSTP) | 343
To view the current values for MSTP parameters, use the show running-config spanning-tree mstp command 
from EXEC privilege mode.
Figure 19-7.  Viewing the Current Values for MSTP Parameters
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.
Change the hello-time parameter.
Note: With large configurations (especially those with more 
ports) Dell Force10 recommends that you increase the 
hello-time.
Range: 1 to 10
Default: 2 seconds
hello-time seconds PROTOCOL MSTP
Change the max-age parameter.
Range: 6 to 40
Default: 20 seconds
max-age seconds PROTOCOL MSTP
Change the max-hops parameter.
Range: 1 to 40
Default: 20
max-hops number PROTOCOL MSTP
Task Command Syntax Command Mode
FTOS(conf-mstp)#forward-delay 16
FTOS(conf-mstp)#exit
FTOS(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
FTOS(conf)#