Configuration Guidelines For Dynamic Ports And Vmps - Cisco WS-C2948G-GE-TX Configuration Manual

Chapter 12 Configuring Dynamic VLAN Membership with VMPS
Table 12-1 Defaults for VMPS Servers and VMPS Clients
Feature
VMPS Server
VMPS enable state
VMPS management domain
VMPS TFTP server
VMPS database configuration
filename
VMPS fallback VLAN
VMPS secure mode
VMPS no domain requests
VMPS Client
VMPS domain server
VMPS reconfirm interval
VMPS server retry count
Dynamic ports

Configuration Guidelines for Dynamic Ports and VMPS

This section lists the guidelines for configuring dynamic ports and VMPS:
•
•
•
•
•
•
•
Note The VTP management domain and the management VLAN of VMPS clients and the VMPS server must
be the same. For more information, see
VLANs."
Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide—Release 8.2GLX
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You must specify a primary VMPS server; you can specify up to two backup VMPS servers in your
network.
The primary VMPS server and backup VMPS servers do not communicate with each other about the
VMPS database. You must enable VMPS on each server, and manually update each VMPS server
when you update the VMPS database.
You must configure VMPS before you configure ports as dynamic.
When you configure a port as dynamic, spanning tree PortFast is enabled automatically for that port.
Automatic enabling of spanning tree PortFast prevents applications on the host from timing out and
entering loops that are caused by incorrect configurations. You can disable spanning tree PortFast
mode on a dynamic port.
If you reconfigure a port from a static port to a dynamic port on the same VLAN, the port connects
immediately to that VLAN. However, VMPS checks the legality of the specific host on the dynamic
port after a specified period.
Static secure ports cannot become dynamic ports. You must turn off security on the static secure port
before it can become dynamic.
Static ports that are trunking cannot become dynamic ports. You must turn off trunking on the trunk
port before changing it from static to dynamic.
Configuration Guidelines for Dynamic Ports and VMPS
Default Configuration
Disabled
Null
None
vmps-config-database.1
Null
Open
Allow
None
60 min
3 attempts
No dynamic ports configured
Chapter 9, "Configuring VTP," and Chapter 10, "Configuring
12-3