Administrator Guide

Layer 2 Switching Commands 782
Command Modes
Global Configuration Mode
User Guidelines
Set this value to a lower number to accelerate the transition to forwarding.
The network operator should take into account the end to end BPDU
propagation delay, the maximum frame lifetime, the maximum transmission
halt delay and the message age overestimate values specific to their network
when configuring this parameter.
Forward delay is only application to STP modes. The forward delay setting is
ignored in MSTP, RSTP and RSTP-PV modes as the designated port is
transitioned to the forwarding state immediately.
Example
console(config)#spanning-tree vlan 3 forward-time 12
spanning-tree vlan hello-time
Use the spanning-tree vlan hello-time command to configure the spanning
tree hello time for a specified VLAN or a range of VLANs.
Syntax
spanning-tree vlan vlan-list hello-time 1-10
no spanning-tree vlan vlan-list hello-time
• Hello-time–The interval between sending successive BDPUs. Default: 2
seconds.
Default Configuration
The default hello time is 2 seconds.
Command Modes
Global Configuration Mode