Cisco Catalyst 4500 Series Configuration Guide

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Software Configuration Guide—Release IOS XE 3.3.0SG and IOS 15.1(1)SG
OL-25340-01
Chapter 15 Configuring VLANs, VTP, and VMPS
VLAN Membership Policy Server
Troubleshooting Dynamic Port VLAN Membership
VMPS errdisables a dynamic port under the following conditions:
• The VMPS is in secure mode, and it does not allow the host to connect to the port. The VMPS
errdisables the port to prevent the host from connecting to the network.
• More than 50 active hosts reside on a dynamic port.
For information on how to display the status of interfaces in error-disabled state, refer to
Chapter 8, “Checking Port Status and Connectivity.” To recover an errdisabled port, use the
errdisable recovery cause vmps global configuration command.
Dynamic Port VLAN Membership Configuration Example
Figure 15-4 on page 15-30 shows a network with a VMPS servers 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 4000 family Switch 1 (running Catalyst Operating System) is the primary VMPS
server.
• The Catalyst 6000 family Switch 3 (running Catalyst Operating System) and the URT are secondary
VMPS servers.
• End stations are connected to these clients:
– Catalyst 4500 series XL Switch 2 (running Catalyst Cisco IOS)
– Catalyst 4500 series XL Switch 9 (running Catalyst Cisco IOS)
• The database configuration file is called Bldg-G.db and is stored on the TFTP server with the IP
address 172.20.22.7.

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E