GVRP Overview Configuring GVRP
page 5-4 OmniSwitch 6800/6850/9000 Network Configuration Guide March 2008
VLAN it learned about from other ports on the same switch. However, that forwarding port does not join
that VLAN until an advertisement for that VLAN is received on that port.
The following illustration shows dynamic VLAN advertisements:
Initial Configuration of GVRP
Switch A has 3 VLANs configured as static VLANs (10, 20, and 30). Other switches on the same network
will learn these 3 VLANs as dynamic VLANs. Also, the end station connected on port 5 is statically
configured for VLAN 50. Port 1 on Switch A is manually configured for VLANs 10, 20, and 30. Hence, as
the diagram above shows,
1 Port 1 on Switch A advertises VLAN IDs (VIDs) 10, 20, and 30.
2 Port 2 on Switch B receives the advertisements. VLANs 10, 20, and 30 are created as dynamic VLANs
on this switch and Port 2 becomes a member of VLANs 10, 20, and 30.
3 Port 3 on Switch B is triggered to advertise VLANs 10, 20, and 30, but does not become a member of
these VLANs.
4 Port 4 on Switch C receives the advertisements. VLANs 10, 20, and 30 are created as dynamic VLANs
on this switch and Port 4 becomes a member of VLANs 10, 20, and 30.
5 Port 5 advertises VLANs 10, 20, and 30, but this port is not a member of these VLANs.
Note. Default VLAN (VLAN 1) exists on all switches, but it is not considered here.
The above sequence of advertisements and registration of VLANs results in the following configuration:
Dynamic Learning of VLANs 10, 20, and 30
Here, the end station advertises itself as a member of VLAN 50. As the above diagram shows,
1 Port 5 receives the advertisement and Switch C creates VLAN 50 as a dynamic VLAN. Port 5 of
Switch C becomes a member of VLAN 50.
2 Port 4 advertises VLAN 50, but is not a member of VLAN 50.
Switch A
Switch C
Switch B
End Station
Static VLAN: 10, 20, 30
Dynamic VLAN
Static VLAN
Dynamic VLAN
Static VLAN
Dynamic VLAN
1
2
3
4
5
Static VLAN 50
Switch A
Switch C
Switch B
End Station
Static VLAN: 10, 20, 30
Dynamic VLAN
Static VLAN
Dynamic VLAN: 10, 20, 30
1
2
3
4
5
Static VLAN
Dynamic VLAN: 10, 20, 30
Static VLAN 50
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