H3C Technologies H3C S10500 Series Switches - Manual (Page 109)

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Configuring a Smart Link device
Configuration prerequisites
• Before configuring a port as a smart link group member, shut down the port to prevent loops. You
can bring up the port only after completing the smart link group configuration.
• Disable the spanning tree feature and RRPP on the ports that you want to add to the smart link group,
and make sure that the ports are not member ports of any aggregation group or service loopback
group.
NOTE:
A loop may occur on the network during the time when the spanning tree feature is disabled but Smart Link
has not yet taken effect on a port.
Configuring protected VLANs for a smart link group
You can configure protected VLANs through referencing Multiple Spanning Tree Instances (MSTIs).
Before configuring protected VLANs, configure the mappings between MSTIs and the VLANs to be
protected (a device working in PVST mode automatically maps VLANs to MSTIs). For more information
about MSTIs and PVST, see Layer 2—LAN Switching Configuration Guide.
Follow these steps to configure the protected VLANs for a smart link group:
To do… Use the command… Remarks
Enter system view system-view —
Enter MST region view stp region-configuration
Not required if the device works in
PVST mode.
instance instance-id vlan vlan-list
Configure the VLAN-to-instance
mapping table
vlan-mapping modulo modulo
Optional
Use either command.
All VLANs in an MST region are
mapped to CIST (MSTI 0) by
default.
Not required if the device works in
PVST mode.
Activate MST region configuration
manually
active region-configuration
Required
Not required if the device works in
PVST mode.
Display the currently activated
configuration information of the
MST region display stp region-configuration [ |
{ begin | exclude | include }
regular-expression ]
Optional
Available in any view.
Return to system view quit
Not required if the device works in
PVST mode.
Create a smart link group, and
enter smart link group view
smart-link group group-id —
Configure protected VLANs for the
smart link group protected-vlan reference-instance
instance-id-list
Required
By default, no protected VLAN is
configured for a smart link group.