Cisco Systems N3KC3048TP1GE Configuring the Rapid PVST+ Hello Time for a VLAN, Procedure, Purpose

Configuring Rapid PVST+

Configuring the Rapid PVST+ Hello Time for a VLAN

Note Be careful when using this configuration. For most situations, we recommend that you configure the primary root and secondary root to modify the bridge priority.

Procedure

	Command or Action	Purpose
Step 1	switch# configure terminal	Enters configuration mode.

Step 2 switch(config)# spanning-tree vlan Configures the bridge priority of a VLAN. Valid values

vlan-rangepriority value are 0, 4096, 8192, 12288, 16384, 20480, 24576, 28672, 32768, 36864, 40960, 45056, 49152, 53248, 57344, and 61440. All other values are rejected. The default value is 32768.

This example shows how to configure the bridge priority of a VLAN:

switch# configure terminal

switch(config)# spanning-tree vlan 5 priority 8192

Configuring the Rapid PVST+ Hello Time for a VLAN

You can configure the Rapid PVST+ hello time for a VLAN.

Note Be careful when using this configuration. For most situations, we recommend that you configure the primary root and secondary root to modify the hello time.

Procedure

	Command or Action	Purpose
Step 1	switch# configure terminal	Enters configuration mode.
Step 2	switch(config)# spanning-tree vlan	Configures the hello time of a VLAN. The hello
	vlan-range hello-timehello-time	time value can be from 1 to 10 seconds. The
		default is 2 seconds.

This example shows how to configure the hello time for a VLAN:

switch# configure terminal

switch(config)# spanning-tree vlan 5 hello-time 7

	Cisco Nexus 3000 NX-OS Layer 2 Switching Configuration Guide, Release 5.0(3)U3(1)
84	OL-26590-01