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Nexus Switching 2nd Edition

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001b.54c2.bbc2 4 2 12 9 Ethernet2/12<br />

VLAN0013 4109<br />

001b.54c2.bbc2 4 2 12 9 Ethernet2/12<br />

VLAN0014 4110<br />

001b.54c2.bbc2 4 2 12 9 Ethernet2/12<br />

VLAN0015 4111<br />

001b.54c2.bbc2 4 2 12 9 Ethernet2/12<br />

VLAN0016 4112<br />

001b.54c2.bbc2 4 2 12 9 Ethernet2/12<br />

VLAN0017 4113<br />

001b.54c2.bbc2 4 2 12 9 Ethernet2/12<br />

VLAN0018 4114<br />

001b.54c2.bbc2 4 2 12 9 Ethernet2/12<br />

VLAN0019 4115<br />

001b.54c2.bbc2 4 2 12 9 Ethernet2/12<br />

VLAN0020 4116<br />

001b.54c2.bbc2 4 2 12 9 Ethernet2/12<br />

VLAN0100 32868<br />

001b.54c2.bbc1 5 2 20 15 Ethernet2/12<br />

Kenya#<br />

Port Priority<br />

With a well-planned root placement in the aggregation switches, manipulation of other<br />

spanning tree parameters is seldom needed; however, in certain cases it might be necessary<br />

to manipulate port-priority to influence the forwarding path. With VLAN access ports, the<br />

port-priority applies to the VLAN to which the port belongs. For interfaces carrying<br />

multiple VLANs using 802.1Q trunking, a port-priority can be specified on a per-VLAN<br />

basis. The default port priority is 128.<br />

Example 2-43 shows the configuration of port-priority on an interface.<br />

Example 2-43. Spanning Tree Port Priority Configuration<br />

Click here to view code image<br />

Kenya# conf t<br />

Enter configuration comm<strong>and</strong>s, one per line. End with<br />

CNTL/Z.<br />

Kenya(config)# interface ethernet 2/12<br />

Kenya(config-if)# spanning-tree port-priority 64<br />

Kenya(config-if)# exit<br />

Kenya(config)# exit<br />

Spanning Tree Toolkit

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