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Cisco Systems IntelligentGigabit Ethernet Switch Modules for the IBM BladeCenter, Software Configuration Guide
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Chapter12 Configuring VLANs
Configuring VLAN Trunks
Figure12-3 Load Sharing by Using STP Port Priorities
Beginning in privileged EXEC mode, follow these steps to configure the network shown in Figure 12-3.
92413
Switch 1
BladeCenter
Trunk 2
VLANs 3 – 6 (priority 10)
VLANs 8 – 10 (priority 128)
Trunk 1
VLANs 8 – 10 (priority 10)
VLANs 3 – 6 (priority 128)
Command Purpose
Step1 configure terminal Enter global configuration mode on Switch 1.
Step2 vtp domain domain-name Configure a VTP administrative domain.
The domain name can be from 1 to 32 characters.
Step3 vtp mode server Configure Switch 1 as the VTP server.
Step4 end Return to privileged EXEC mode.
Step5 show vtp status Verify the VTP configuration on both Sw itch A and Switch B.
In the display, check the VTP Operating Mode and the VTP Domain
Name fields.
Step6 show vlan Verify that the VLANs exist in the database on Switch A.
Step7 configure terminal Enter global configuration mode.
Step8 interface gigabitethernet0/17 Enter interface configuration mode, and define Gigabit Ethernet
port 0/17 as the interface to be configured as a trunk.
Step9 switchport mode trunk Configure the port as a trunk port.
Step10 end Return to privilege EXEC mode.
Step11 show interfaces gigabitethernet0/17
switchport
Verify the VLAN configuration.
Step12 Repeat Steps 7 through 11 on Switch A for Gigabit Ethernet port 0/18.
Step13 Repeat Steps 7 through 11 on Switch B to configure the trunk ports on
Gigabit Ethernet ports 0/17 and 0/18.
Step14 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.
Step15 configure terminal Enter global configuration mode on Switch A.
Step16 interface gigabitethernet0/17 Enter interface configuration mode, and define the interface to set the
STP port priority.
Step17 spanning-tree vlan 8-10 port-priority 16 Assign the port priority of 16 for VLANs 8 through 10.
Step18 spanning-tree vlan 10 port-priority 16 Assign the port priority of 16 for VLAN 10.