Технические ссылки для Cisco Cisco 5760 Wireless LAN Controller
spanning-tree vlan
To configure spanning tree on a per-VLAN basis, use the spanning-tree vlan command in global configuration
mode on the switch stack or on a standalone switch. To return to the default setting, use the no form of this
command.
mode on the switch stack or on a standalone switch. To return to the default setting, use the no form of this
command.
spanning-tree vlan vlan-id [forward-time seconds| hello-time seconds| max-age seconds| priority priority|
root {primary| secondary} [diameter net-diameter [hello-time seconds]]]
root {primary| secondary} [diameter net-diameter [hello-time seconds]]]
no spanning-tree vlan vlan-id [forward-time| hello-time| max-age| priority| root]
Syntax Description
VLAN range associated with a spanning-tree instance. You can specify a single
VLAN identified by VLAN ID number, a range of VLANs separated by a hyphen,
or a series of VLANs separated by a comma. The range is 1 to 4094.
VLAN identified by VLAN ID number, a range of VLANs separated by a hyphen,
or a series of VLANs separated by a comma. The range is 1 to 4094.
vlan-id
(Optional) Sets the forward-delay time for the specified spanning-tree instance.
The forwarding time specifies how long each of the listening and learning states
last before the interface begins forwarding. The range is 4 to 30 seconds.
The forwarding time specifies how long each of the listening and learning states
last before the interface begins forwarding. The range is 4 to 30 seconds.
forward-time seconds
(Optional) Sets the interval between hello bridge protocol data units (BPDUs) sent
by the root switch configuration messages. The range is 1 to 10 seconds.
by the root switch configuration messages. The range is 1 to 10 seconds.
hello-time seconds
(Optional) Sets the interval between messages the spanning tree receives from the
root switch. If a switch does not receive a BPDU message from the root switch
within this interval, it recomputes the spanning-tree topology. The range is 6 to 40
seconds.
root switch. If a switch does not receive a BPDU message from the root switch
within this interval, it recomputes the spanning-tree topology. The range is 6 to 40
seconds.
max-age seconds
(Optional) Sets the switch priority for the specified spanning-tree instance. This
setting affects the likelihood that the switch is selected as the root switch. A lower
value increases the probability that the switch is selected as the root switch.
setting affects the likelihood that the switch is selected as the root switch. A lower
value increases the probability that the switch is selected as the root switch.
The range is 0 to 61440 in increments of 4096. Valid priority values are 4096,
8192, 12288, 16384, 20480, 24576, 28672, 32768, 36864, 40960, 45056, 49152,
53248, 57344, and 61440. All other values are rejected.
8192, 12288, 16384, 20480, 24576, 28672, 32768, 36864, 40960, 45056, 49152,
53248, 57344, and 61440. All other values are rejected.
priority priority
(Optional) Forces this switch to be the root switch.
root primary
(Optional) Sets this switch to be the root switch should the primary root switch
fail.
fail.
root secondary
(Optional) Sets the maximum number of switches between any two end stations.
The range is 2 to 7.
The range is 2 to 7.
diameter net-diameter
Command Default
Spanning tree is enabled on all VLANs.
The forward-delay time is 15 seconds.
The hello time is 2 seconds.
Consolidated Platform Command Reference, Cisco IOS XE Release 3SE (Cisco WLC 5700 Series)
OL-29471-01
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spanning-tree vlan