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Enabling the spanning tree feature, Enabling the spanning tree feature in pvst mode – H3C Technologies H3C S5560 Series Switches User Manual

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Enabling the spanning tree feature

You must enable the spanning tree feature for the device before any other spanning tree related
configurations can take effect. In STP, RSTP, or MSTP mode, make sure the spanning tree feature is

enabled globally and on the desired ports. In PVST mode, make sure the spanning tree feature is

enabled globally, in the desired VLANs, and on the desired ports.
You can disable the spanning tree feature for certain ports with the undo stp enable command to exclude
them from spanning tree calculation and save CPU resources of the device. Make sure no loops occur in

the network after you disable the spanning tree feature on these ports.

Enabling the spanning tree feature in STP/RSTP/MSTP mode

Step Command

Remarks

1.

Enter system view.

system-view

N/A

2.

Enable the spanning tree
feature.

stp global enable

If the device starts up with the initial

settings, the spanning tree feature is
disabled globally by default.

If the device starts up with the factory

defaults, the spanning tree feature is
enabled globally by default.

For more information about the startup
configuration, see Fundamentals

Configuration Guide.

3.

Enter Layer 2 Ethernet or
aggregate interface view.

interface interface-type
interface-number

N/A

4.

(Optional.) Enable the
spanning tree feature for the

port.

stp enable

By default, the spanning tree feature is
enabled on all ports.

Enabling the spanning tree feature in PVST mode

Step Command

Remarks

1.

Enter system view.

system-view

N/A

2.

Enable the spanning tree
feature.

stp global enable

If the device starts up with the initial
settings, the spanning tree feature is

disabled globally by default.

If the device starts up with the factory
defaults, the spanning tree feature is

enabled globally by default.

For more information about the startup

configuration, see Fundamentals

Configuration Guide.

3.

Enable the spanning tree
feature in VLANs.

stp vlan vlan-id-list
enable

The spanning tree feature is enabled for all
VLANs.