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CLI-based Configuration Guide - Ethernet Switching

AR650, AR1600, and AR6100 V300R003

This document describes how to configure the components for LAN services, including link aggregation groups, VLANs, voice VLANs, MAC address tables, transparent bridging, as well as GVRP, STP/RSTP, and MSTP protocols.
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Overview of GVRP

Overview of GVRP


The Generic Attribute Registration Protocol (GARP) provides a mechanism to propagate attributes so that a protocol entity can register and deregister attributes. By filling different attributes into GARP packets, GARP supports different upper-layer applications.

The Generic Attribute Registration Protocol (GVRP) is used to register and deregister VLAN attributes.

GARP identifies applications through destination MAC addresses. IEEE Std 802.1Q assigns 01-80-C2-00-00-21 to the VLAN application (GVRP).


To deploy certain VLANs on all devices on a network, the network administrator needs to manually create these VLANs on each device. As shown in Figure 9-1, three routers are connected through trunk links. VLAN 2 is configured on Router A, and VLAN 1 is configured on Router B and Router C. To forward packets of VLAN 2 from Router A to Router C, the network administrator must manually create VLAN 2 on Router B and Router C.

Figure 9-1  Networking of GVRP application

When a network is complicated and the network administrator is unfamiliar with the network topology or when many VLANs are configured on the network, huge workload is required for manual configuration. In addition, configuration errors may occur. In this case, you can configure GVRP on the network to implement automatic registration of VLANs.


GVRP is based on GARP and is used to maintain VLAN attributes dynamically on devices. Through GVRP, VLAN attributes of one device can be propagated throughout the entire switching network. GVRP enables network devices to dynamically deliver, register, and propagate VLAN attributes, reducing workload of the network administrator and ensuring correct configuration.

Updated: 2019-04-12

Document ID: EDOC1100041791

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