Table of Contents
Advertisement
Chapter 11
Configuring VLANs
Figure 11-3
configured as follows:
•
•
•
•
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 11-3
VLANs 8 – 10 (priority 16)
VLANs 3 – 6 (priority 128)
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 gigabitethernet0/1
Step 9
switchport trunk encapsulation {isl |
dot1q | negotiate}
Step 10
switchport mode trunk
Step 11
end
Step 12
show interfaces gigabitethernet0/1
switchport
OL-8915-03
shows two trunks connecting supported switches. In this example, the switches are
VLANs 8 through 10 are assigned a port priority of 16 on Trunk 1.
VLANs 3 through 6 retain the default port priority of 128 on Trunk 1.
VLANs 3 through 6 are assigned a port priority of 16 on Trunk 2.
VLANs 8 through 10 retain the default port priority of 128 on Trunk 2.
Load Sharing by Using STP Port Priorities
Trunk 1
Switch B
Switch A
Trunk 2
VLANs 3 – 6 (priority 16)
VLANs 8 – 10 (priority 128)
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.
Cisco Catalyst Blade Switch 3020 for HP Software Configuration Guide
Configuring VLAN Trunks
Figure
11-3.
11-25
Hide quick links:
Advertisement
Table of Contents
Troubleshooting
