Cisco Catalyst 2900 Series XL Especificaciones descargar pdf (Pagina 233)

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Catalyst 2900 Series XL and Catalyst 3500 Series XL Software Configuration Guide

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Chapter 8 Configuring VLANs

How the VMPS Works

Administering and Monitoring the VMPS

You can display information about the VMPS by using the privileged EXEC show vmps command. The

switch displays this information about the VMPS:

Troubleshooting Dynamic Port VLAN Membership

The VMPS shuts down a dynamic port under these conditions:

• The VMPS is in secure mode, and it will not allow the host to connect to the port. The VMPS shuts

down the port to prevent the host from connecting to the network.

• More than 20 active hosts reside on a dynamic port.

To reenable a shut-down dynamic port, enter the interface configuration no shutdown command.

Dynamic Port VLAN Membership Configuration Example

Figure 8-7 shows a network with a VMPS server switch and VMPS client switches with dynamic ports.

In this example, these assumptions apply:

• The VMPS server and the VMPS client are separate switches.

• The Catalyst 5000 series Switch 1 is the primary VMPS server.

• The Catalyst 5000 series Switch 3 and Switch 10 are secondary VMPS servers.

• End stations are connected to these clients:

–

Catalyst 2900 XL Switch 2

–

Catalyst 3500 XL Switch 9

• The database configuration file is called Bldg-G.db and is stored on the TFTP server with the IP

address 172.20.22.7.

VMPS VQP Version The version of VQP used to communicate with the VMPS. The switch queries

the VMPS using version 1 of VQP.

Reconfirm Interval The number of minutes the switch waits before reconfirming the

VLAN-to-MAC-address assignments.

Server Retry Count The number of times VQP resends a query to the VMPS. If no response is

received after this many tries, the switch starts to query the secondary VMPS.

VMPS domain server The IP address of the configured VLAN membership policy servers. The switch

sends queries to the one marked current. The one marked primary is the primary

server.

VMPS Action The result of the most recent reconfirmation attempt. This can happen

automatically when the reconfirmation interval expired, or you can force it by

entering the privileged EXEC vmps reconfirm command or its Cluster

Management software or SNMP equivalent.

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Cisco Catalyst 2900 Series XL Especificaciones Pagina 233