D-Link DES-6300, User Manual, Page: 94 / 298

Modular L3 Ethernet Switch User’s Guide
85
Configure GVRP and Trunking
Generic Attribute Registration Protocol (GARP) protocol is a general-purpose protocol that
registers any network connectivity or membership-style information. GARP defines a set of
devices interested in a given network attribute, such as VLAN or multicast address.
GARP VLAN Registration Protocol (GVRP) protocol is specifically provided for automatic
distribution of VLAN membership information among VLAN-aware bridges. GVRP allows
VLAN-aware bridges to automatically learn VLANs to bridge ports mapping, without having to
individually configure each bridge, and to register VLAN membership.
To minimize the memory requirements when running the GVRP protocol, two proprietary tuning
variables have been added to the standard variables:
Maximum number of GVRP VLANs – Displays the number of GVRP VLANs
allowed to participate in GVRP operation.
Maximum number of GVRP VLANs after Reset – Sets another value of GVRP
VLANs. Maximum number of GVRP VLANs after Reset is used for tuning. This
value becomes valid after reset only.
The maximum number of GVRP VLANs includes all the VLANs participating in GVRP
operation regardless if they are static or dynamic.
The following should be considered when specifying the maximum number of VLANs
participating in GVRP by setting the
Maximum number of GVRP VLANs after Reset value:
The default maximum number of GVRP VLANs is equal to 0 because of the
memory restrictions.
The maximum number of VLANs (managed through Max VLANs MIB variable)
limits the maximum number of GVRP VLANs.
To ensure the correct operation of the GVRP protocol, users are advised to set the
maximum number of GVRP VLANs equal to a value that significantly exceeds the
sum of:
•
The number of all static VLANs both currently configured and expected
to be configured.
•
The number of all dynamic VLANs participating in GVRP both
currently configured (initial number of dynamic GVRP VLANs is 0) and
expected to be configured.
Increasing the value of maximum number of GVRP VLANs to value beyond the sums, allows
users to run GVRP, and not reset the device to receive a larger amount of GVRP VLANs. For
example, if 3 VLANs exist and another two VLANs are expected to be configured as a result of
VLAN static or dynamic registration, set the maximum number of GVRP VLANs after reset to
10.
Note : To enable GVRP, ensure that the amount of maximum amount of VLANs is less than
4000. For more information, see the Device Tuning section later in this manual.
To configure the GVRP feature:
1. Enable GVRP on a device.