Web Management Guide-R04

Table Of Contents
Chapter 5
| VLAN Configuration
IEEE 802.1Q VLANs
– 178 –
Configuring Dynamic
VLAN Registration
Use the VLAN > Dynamic page to enable GVRP globally on the switch, or to enable
GVRP and adjust the protocol timers per interface.
Parameters
These parameters are displayed:
Configure General
GVRP Status – GVRP defines a way for switches to exchange VLAN information
in order to register VLAN members on ports across the network. VLANs are
dynamically configured based on join messages issued by host devices and
propagated throughout the network. GVRP must be enabled to permit
automatic VLAN registration, and to support VLANs which extend beyond the
local switch. (Default: Disabled)
GVRP cannot be enabled for ports set to Access mode (see Adding Static
Members to VLANs” on page 173).
Configure Interface
Interface – Displays a list of ports or trunks.
Port – Port Identifier. (Range: 1-28)
Trunk – Trunk Identifier. (Range: 1-26)
GVRP Status – Enables/disables GVRP for the interface. GVRP must be globally
enabled for the switch before this setting can take effect (using the Configure
General page). When disabled, any GVRP packets received on this port will be
discarded and no GVRP registrations will be propagated from other ports.
(Default: Disabled)
GARP Timers Timer settings must follow this rule:
2 x (join timer) < leave timer < leaveAll timer
Join – The interval between transmitting requests/queries to participate in
a VLAN group. (Range: 20-1000 centiseconds; Default: 20 centiseconds)
Leave – The interval a port waits before leaving a VLAN group. This time
should be set to more than twice the join time. This ensures that after a
Leave or LeaveAll message has been issued, the applicants can rejoin
before the port actually leaves the group. (Range: 60-3000 centiseconds;
Default: 60 centiseconds)
LeaveAll – The interval between sending out a LeaveAll query message for
VLAN group participants and the port leaving the group. This interval
should be considerably larger than the Leave Time to minimize the amount
of traffic generated by nodes rejoining the group. (Range: 500-18000
centiseconds; Default: 1000 centiseconds)