Cisco 3032 Software Configuration Manual page 400

Configuring VLAN Trunks
In this way, Trunk 1 carries traffic for VLANs 8 through 10, and Trunk 2 carries traffic for VLANs 3
through 6. If the active trunk fails, the trunk with the lower priority takes over and carries the traffic for
all of the VLANs. No duplication of traffic occurs over any trunk port.
Figure 13-4
VLANs 8 – 10 (priority 16)
VLANs 3 – 6 (priority 128)
Note 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. For
more information, see the
Beginning in privileged EXEC mode, follow these steps to configure the network shown in
Command
Step 1
configure terminal
Step 2 vtp domain domain-name
Step 3 vtp mode server
Step 4
end
Step 5 show vtp status
Step 6 show vlan
Step 7 configure terminal
Step 8 interface gigabitethernet1/ 0/1
Step 9 switchport trunk encapsulation {isl |
dot1q | negotiate}
Step 10 switchport mode trunk
Step 11
end
Step 12 show interfaces gigabitethernet1/ 0/1
switchport
Cisco Catalyst Blade Switch 3130 and 3032 for Dell Software Configuration Guide
13-24
Load Sharing by Using STP Port Priorities
Switch A
Trunk 1
Switch B
"Load Sharing Using STP Path Cost" section on page
Purpose
Enter global configuration mode on Switch A.
Configure a VTP administrative domain.
The domain name can be 1 to 32 characters.
Configure Switch A as the VTP server.
Return to privileged EXEC mode.
Verify the VTP configuration on both Switch A and Switch B.
In the display, check the VTP Operating Mode and the VTP Domain
Name fields.
Verify that the VLANs exist in the database on Switch A.
Enter global configuration mode.
Define the interface to be configured as a trunk, and enter interface
configuration mode.
Configure the port to support ISL or IEEE 802.1Q encapsulation or to
negotiate with the neighboring interface. You must configure each
end of the link with the same encapsulation type.
Configure the port as a trunk port.
Return to privileged EXEC mode.
Verify the VLAN configuration.
Trunk 2
VLANs 3 – 6 (priority 16)
VLANs 8 – 10 (priority 128)
Chapter 13 Configuring VLANs
13-25.
Figure 13-4.
OL-12247-04