KB.15.15

Example 55 GVRP operation

Options for a GVRP-aware port receiving advertisements

• If there is not already a static VLAN with the advertised VID on the receiving port, such a port

can dynamically create the VLAN and become a member.

• If the switch already has a static VLAN assignment with the same VID as in the advertisement,

and the port is configured to Auto for that VLAN, then the port will dynamically join the VLAN

and begin moving that VLAN's traffic. .

• Ignore the advertisement for that VID.

• Not participate in that VLAN.

Options for a port belonging to a tagged or untagged static VLAN

• Send VLAN advertisements.

• Receive advertisements for VLANs on other ports and dynamically join those VLANs.

• Send VLAN advertisements but ignore advertisements received from other ports.

• Avoid GVRP participation by not sending advertisements and dropping any advertisements

received from other devices.

IP addressing

A dynamic VLAN does not have an IP address, and moves traffic on the basis of port membership

in VLANs. However, after GVRP creates a dynamic VLAN, you can convert it to a static VLAN.

Note that it is then necessary to assign ports to the VLAN in the same way that you would for a

static VLAN created manually. In the static state you can configure IP addressing on the VLAN and

access it in the same way that you would any other static VLAN.

Per-port options for handling GVRP unknown VLANs

An "unknown VLAN" is a VLAN that the switch learns of by receiving an advertisement for that

VLAN on a port that is not already a member of that VLAN. If the port is configured to learn

About GVRP 73