Table of Contents
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Chapter 12
Configuring VLANs
Command
Step 4
exit
Step 5
Step 6
end
Step 7
show running-config
Step 8
show vlan
Step 9
configure terminal
Step 10
interface gigabitethernet0/1
Step 11
spanning-tree vlan 2-4 cost 30
Step 12
end
Step 13
Step 14
exit
Step 15
show running-config
Step 16
copy running-config startup-config
Configuring VMPS
The VLAN Query Protocol (VQP) is used to support dynamic-access ports, which are not permanently
assigned to a VLAN, but give VLAN assignments based on the MAC source addresses seen on the port.
Each time an unknown MAC address is seen, the switch sends a VQP query to a remote VMPS; the query
includes the newly seen MAC address and the port on which it was seen. The VMPS responds with a
VLAN assignment for the port. The switch cannot be a VMPS server but can act as a client to the VMPS
and communicate with it through VQP.
These sections contain this information:
•
•
•
•
•
•
•
OL-8603-04
"Understanding VMPS" section on page 12-24
"Default VMPS Client Configuration" section on page 12-25
"VMPS Configuration Guidelines" section on page 12-25
"Configuring the VMPS Client" section on page 12-25
"Monitoring the VMPS" section on page 12-28
"Troubleshooting Dynamic-Access Port VLAN Membership" section on page 12-29
"VMPS Configuration Example" section on page 12-29
Purpose
Return to global configuration mode.
Repeat Steps 2 through 4 on a second interface in Switch A.
Return to privileged EXEC mode.
Verify your entries. In the display, make sure that the interfaces are
configured as trunk ports.
When the trunk links come up, Switch A receives the VTP information
from the other switches. Verify that Switch A has learned the VLAN
configuration.
Enter global configuration mode.
Define the interface on which to set the STP cost, and enter interface
configuration mode.
Set the spanning-tree path cost to 30 for VLANs 2 through 4.
Return to global configuration mode.
Repeat Steps 9 through 12 on the other configured trunk interface on
Switch A, and set the spanning-tree path cost to 30 for VLANs 8, 9, and
10.
Return to privileged EXEC mode.
Verify your entries. In the display, verify that the path costs are set
correctly for both trunk interfaces.
(Optional) Save your entries in the configuration file.
Catalyst 2960 Switch Software Configuration Guide
Configuring VMPS
12-23
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