To delete VLAN 2 from all the routers, two-way deregistration is required. The process is as
follows:
1. After static VLAN 2 is manually deleted from RouterC, Port 4 of RouterC starts the Hold
timer. When the Hold timer expires, Port 4 sends a LeaveEmpty message to RouterB.
2. After Port 3 of RouterB receives the LeaveEmpty message, it starts the Leave timer. When
the Leave timer expires, Port 3 deregisters VLAN 2. Then Port 3 is deleted from dynamic
VLAN 2, and dynamic VLAN 2 is deleted from RouterB. At this time, RouterB requests
Port 2 to start the Hold timer. When the Hold timer expires, Port 2 sends a LeaveEmpty
message to RouterA.
3. After Port 1 of RouterA receives the LeaveEmpty message, it starts the Leave timer. When
the Leave timer expires, Port 1 deregisters VLAN 2. Then Port 1 is deleted from dynamic
VLAN 2, and dynamic VLAN 2 is deleted from RouterA.
5.3 Applications
This section describes the applicable scenario of GVRP.
GVRP enables routers on a network to dynamically maintain and update VLAN information.
With GVRP, you can adjust the VLAN deployment on the entire network by configuring only
a few devices. You do not need to analyze the topology and manage configurations. As shown
in Figure 5-9, GVRP is enabled on all devices. Devices are interconnected through trunk ports
and each trunk port allows packets of all VLANs to pass. You simply need to configure static
VLANs 100 to 1000 on RouterA and RouterC. Then the other devices can learn VLANs 100 to
1000 through GVRP.
Figure 5-9 Typical application of GVRP
RouterA
RouterB
RouterC
VLAN 100~1000 VLAN 100~1000
5.4 Default Configuration
This section describes default GVRP settings that can be changed in actual applications.
Huawei AR530&AR550 Series Industrial Switch Routers
Configuration Guide - Ethernet Switching
5 GVRP Configuration
Issue 01 (2014-11-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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