Configuring Vmps; Understanding Vmps - Cisco 2950 - Catalyst Switch Configuration Manual

Chapter 17 Configuring VLANs
Command
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 switch cannot be a VMPS server but can act as a client to the VMPS and communicate with it
through the VLAN Query Protocol (VQP). VMPS dynamically assigns dynamic access port VLAN
membership.
This section includes this information about configuring VMPS:
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Understanding VMPS

When the VMPS receives a VQP request from a client switch, it searches its database for a
MAC-address-to-VLAN mapping. The server response is based on this mapping and whether or not the
server is in secure mode. Secure mode determines whether the server shuts down the port when a VLAN
is not allowed on it or just denies the port access to the VLAN.
In response to a request, the VMPS takes one of these actions:
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"Understanding VMPS" section on page 17-25
"Default VMPS Client Configuration" section on page 17-27
"VMPS Configuration Guidelines" section on page 17-27
"Configuring the VMPS Client" section on page 17-28
"Monitoring the VMPS" section on page 17-30
"Troubleshooting Dynamic Port VLAN Membership" section on page 17-31
"VMPS Configuration Example" section on page 17-31
If the assigned VLAN is restricted to a group of ports, the VMPS verifies the requesting port against
this group and responds as follows:
– If the VLAN is allowed on the port, the VMPS sends the VLAN name to the client in response.
– If the VLAN is not allowed on the port and the VMPS is not in secure mode, the VMPS sends
an access-denied response.
– If the VLAN is not allowed on the port and the VMPS is in secure mode, the VMPS sends a
port-shutdown response.
Purpose
Set the spanning-tree path cost to 30 for VLANs 2 through 4.
Return to global configuration mode.
Repeat Steps 9 through 11 on Switch A interface Fast Ethernet 0/2, 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 interfaces
Fast Ethernet 0/1 and 0/2.
(Optional) Save your entries in the configuration file.
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
Configuring VMPS
17-25