Руководство По Проектированию для Cisco Cisco Nexus 5010 Switch
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You can verify the spanning-tree configuration as follows:
show spanning-tree summary
Switch is in rapid-pvst mode
Root bridge for: VLAN0212
Port Type Default is disable
If you are using MST, the MST region configuration must match the MST region configuration on the Cisco Nexus
7000 Series Switch, or more generally on the aggregation-layer switch. Failure to create matching configurations
creates two regions that still interoperate through Rapid PVST+; however, the steady-state configuration should
really comprise a single region.
spanning-tree mode mst
spanning-tree pathcost method long
spanning-tree mst configuration
name dc1
revision 3
instance 1 vlan 1-4093
If you are using MST, be sure to configure the region mapping for all VLANs even if you are not using them all.
This configuration does not have any hardware or CPU resource use costs until the VLAN is created and assigned
to interfaces.
Host ports on the Cisco Nexus 5000 Series should be configured as type edge to enable PortFast with or without
BPDU filtering:
spanning-tree port type edge
Cisco Nexus 5000 Series in vPC Mode
The spanning-tree configuration best practices for vPC mode are identical to the best practices described in the
previous section except that you can also configure the MST region definition using config-sync.
You may want to disable loop guard if you plan to use the Cisco Nexus 5000 Series in vPC mode. Loop guard is
not useful in vPC topologies.
The spanning-tree mode needs to be configured independently on both Cisco Nexus 5000 Series Switches:
config t
spanning-tree mode mst
spanning-tree pathcost method long
no spanning-tree loopguard default
spanning-tree mst configuration
name dc1
revision 3
instance 1 vlan 1-4093
Repeat the preceding configuration on both (future) vPC peers.
At this point, the MST region definition is identical on both Cisco Nexus 5000 Series peers.