S e n d c o m m e n t s t o n x 5 0 0 0 - d o c f e e d b a c k @ c i s c o . c o m
2-87
Cisco Nexus 5000 Series Command Reference
OL-16599-01
Chapter 2 Ethernet Commands
spanning-tree vlan
spanning-tree vlan
To configure Spanning Tree Protocol (STP) parameters on a per-VLAN basis, use the
spanning-tree
vlan
command. To return to the default settings, use the
no
form of this command.
spanning-tree vlan
vlan-id
[
forward-time
value
|
hello-time
value
|
max-age
value
|
priority
value
|
[
root
{
primary
|
secondary
}
[
diameter
dia
[
hello-time
value
]]]]
no spanning-tree vlan
vlan-id
[
forward-time
|
hello-time
|
max-age
|
priority
|
root
]
Syntax Description
Command Default
The defaults are as follows:
•
forward-time
—15 seconds
•
hello-time
—2 seconds
•
max-age
—20 seconds
•
priority
—32768
Command Modes
Configuration mode
Command History
vlan-id
VLAN identification number; the range of valid values is from 0 to 4094.
forward-time
value
(Optional) Specifies the STP forward-delay time; the range of valid values is
from 4 to 30 seconds.
hello-time
value
(Optional) Specifies the number of seconds between the generation of
configuration messages by the root switch; the range of valid values is from
1 to 10 seconds.
max-age
value
(Optional) Specifies the maximum number of seconds that the information
in a bridge protocol data unit (BPDU) is valid; the range of valid values is
from 6 to 40 seconds.
priority
value
(Optional) Specifies the STP-bridge priority; the valid values are 0, 4096,
8192, 12288, 16384, 20480, 24576, 28672, 32768, 36864, 40960, 45056,
49152, 53248, 57344, or 61440. All other values are rejected.
root primary
(Optional) Forces this switch to be the root bridge.
root secondary
(Optional) Forces this switch to be the root switch if the primary root fails.
diameter
dia
(Optional) Specifies the maximum number of bridges between any two
points of attachment between end stations.
Release
Modification
4.0(0)N1(1a)
This command was introduced.
