Layer 2 Switching Commands 770
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
User Guidelines
This command can be configured even if the switch is configured for
MST(RSTP) mode. It is only used when the switch is configured for STP-PV
or RSTP-PV modes.
Set this value to a lower number to accelerate discovery of topology changes.
Use the no form of the command to return the hello time to its default value.
Example
console(config)#spanning-tree vlan 3 hello-time 1
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