Gvrp, Gvrp overview, Gvrp registration modes – H3C Technologies H3C WX3000E Series Wireless Switches User Manual
Page 131: Protocols and standards, Gvrp configuration task list
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The destination MAC addresses of GARP messages are multicast MAC addresses, and vary with GARP
applications. For example, the destination MAC address of GVRP is 01-80-C2-00-00-21.
GVRP
GVRP overview
As a GARP application, GVRP uses the operating mechanism of GARP to maintain and propagate
dynamic VLAN registrations throughout a switched LAN.
In a switched LAN, each GVRP-enabled switch sends and receives VLAN declarations and withdrawals
from other GVRP-enabled switches, and dynamically updates its local database, including active VLAN
members and through which port each VLAN member can be reached. This ensures that all
GVRP-enabled switches in a LAN maintain the same VLAN information.
The VLAN information propagated by GVRP includes not only manually configured static VLAN
information but also dynamic VLAN information from other switches.
GVRP registration modes
GVRP is available on trunk ports. It provides the following registration modes:
•
Normal mode – Performs dynamic VLAN registrations and deregistrations on the trunk port, and
sends declarations and withdrawals for dynamic and static VLANs. VLANs manually configured
are called static VLANs, and VLANs created by GVRP are called dynamic VLANs.
•
Fixed mode – Disables the trunk port to register or withdraw dynamic VLAN information, but allows
the port to send declarations for static VLANs. A trunk port in this mode carries only static VLANs,
even if it has been assigned to all VLANs.
•
Forbidden mode – Disables the trunk port to register or withdraw dynamic VLAN information, and
allows the port to send declarations only for VLAN 1. A trunk port in this mode carries only VLAN
1 even if it has been assigned to any other VLANs.
Protocols and standards
•
IEEE 802.1Q, Virtual Bridged Local Area Networks
GVRP configuration task list
Complete these tasks to configure GVRP:
Task Remarks
Required
Optional
NOTE:
•
GVRP configuration made in Ethernet interface view or Layer 2 aggregate interface view takes effect on
the current interface only; GVRP configuration made in port group view takes effect on all the member
ports in the group.
•
GVRP configuration made on a member port in an aggregation group takes effect only after the port is
removed from the aggregation group.