Reference Guide

Spanning Tree Protocol | 987
To change STP global parameters:
View the current values for global parameters using the show spanning-tree 0 command from EXEC
privilege mode. Refer to show spanning-tree 0 Command Example.
Port Cost 100-Mb/s Ethernet interfaces 19
1-Gigabit Ethernet interfaces 4
10-Gigabit Ethernet interfaces 2
Port Channel with 100 Mb/s Ethernet interfaces 18
Port Channel with 1-Gigabit Ethernet interfaces 3
Port Channel with 10-Gigabit Ethernet interfaces 1
Port Priority 8
Task Command Syntax Command Mode
Change the forward-delay parameter (the wait time before the
interface enters the forwarding state).
• Range: 4 to 30
• Default: 15 seconds
forward-delay seconds PROTOCOL
SPANNING TREE
Change the hello-time parameter (the BPDU transmission interval).
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
SPANNING TREE
Change the max-age parameter (the refresh interval for configuration
information that is generated by recomputing the Spanning Tree
topology).
Range: 6 to 40
Default: 20 seconds
max-age seconds PROTOCOL
SPANNING TREE
Table 55-2. STP Default Values
STP Parameter Default Value