Cisco Catalyst 2960 Series, Configuration Manual

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Purpose Command or Action
Verifies your entries in the Trunking Native Mode VLAN
field.
show interfaces interface-id switchport
Example:
Switch#
show interfaces gigabitethernet1/0/2
Step 6
switchport
(Optional) Saves your entries in the configuration file.
copy running-config startup-config
Example:
Switch# copy running-config startup-config
Step 7
Configuring Trunk Ports for Load Sharing
Configuring Load Sharing Using STP Port Priorities
If your switch is a member of a switch stack, you must use the spanning-tree [ vlan vlan-id ] cost cost interface
configuration command instead of the spanning-tree [ vlan vlan-id ] port-priority priority interface
configuration command to select an interface to put in the forwarding state. Assign lower cost values to
interfaces that you want selected first and higher cost values that you want selected last.
These steps describe how to configure a network with load sharing using STP port priorities.
Consolidated Platform Configuration Guide, Cisco IOS Release 15.2(4)E (Catalyst 2960-X Switches)
2141
How to Configure VLAN Trunks