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Cisco Catalyst Blade Switch 3120 for HP Software Configuration Guide
OL-12247-01
Chapter 12 Configuring VLANs
Configuring VLAN Trunks
Beginning in privileged EXEC mode, follow these steps to configure the network shown in
Figure 12-4
.
Command
Purpose
Step 1
configure terminal
Enter global configuration mode on Switch A.
Step 2
vtp domain domain-name
Configure a VTP administrative domain.
The domain name can be 1 to 32 characters.
Step 3
vtp mode server
Configure Switch A as the VTP server.
Step 4
end
Return to privileged EXEC mode.
Step 5
show vtp status
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.
Step 6
show vlan
Verify that the VLANs exist in the database on Switch A.
Step 7
configure terminal
Enter global configuration mode.
Step 8
interface gigabitethernet 0/1
Define the interface to be configured as a trunk, and enter interface
configuration mode.
Step 9
switchport trunk encapsulation {isl |
dot1q | negotiate}
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.
Step 10
switchport mode trunk
Configure the port as a trunk port.
Step 11
end
Return to privileged EXEC mode.
Step 12
show interfaces gigabitethernet1/ 0/1
switchport
Verify the VLAN configuration.
Step 13
Repeat Steps 7 through 11on Switch A for a second port in the switch
or switch stack.
Step 14
Repeat Steps 7 through 11on Switch B to configure the trunk ports that
connect to the trunk ports configured on Switch A.
Step 15
show vlan
When the trunk links come up, VTP passes the VTP and VLAN
information to Switch B. Verify that Switch B has learned the VLAN
configuration.
Step 16
configure terminal
Enter global configuration mode on Switch A.
Step 17
interface gigabitethernet1/ 0/1
Define the interface to set the STP port priority, and enter interface
configuration mode.
Step 18
spanning-tree vlan 8-10 port-priority 16
Assign the port priority of 16 for VLANs 8 through 10.
Step 19
exit
Return to global configuration mode.
Step 20
interface gigabitethernet1/0/2
Define the interface to set the STP port priority, and enter interface
configuration mode.
Step 21
spanning-tree vlan 3-6 port-priority 16
Assign the port priority of 16 for VLANs 3 through 6.
Step 22
end
Return to privileged EXEC mode.
Step 23
show running-config
Verify your entries.
Step 24
copy running-config startup-config
(Optional) Save your entries in the configuration file.
