GVRP
Introduction
Joining
Initiating Advertisements. As described in the preceding section, to enable dynamic joins, GVRP must be enabled and a port must be configured to Learn (the default). However, to send advertisements in your network, one or more static (Tagged, Untagged, or Auto) VLANs must be configured on one or more switches (with GVRP enabled), depending on your topology.
Enabling a Port for Dynamic Joins. You can configure a port to dynamically join a static VLAN. The join will then occur if that port subsequently receives an advertisement for the static VLAN. (This is done by using the Auto and Learn options described in table
Parameters for Controlling VLAN Propagation Behavior. You can configure an individual port to actively or passively participate in dynamic VLAN propagation or to ignore dynamic VLAN (GVRP) operation. These options are controlled by the GVRP “Unknown VLAN” and the static VLAN configuration parameters, as described in the following table:
Table
| Static VLAN | ||||
“Unknown |
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| Port Activity: Forbid (Per VLAN)2 | ||
VLAN” | Port Activity: | Port Activity: | |||
(GVRP) |
| 2 | Auto2 (Per VLAN) |
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Configuration | Tagged or Untagged (Per VLAN) |
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Learn | The port: | The port: | The port: | ||
(the Default) | • Belongs to specified VLAN. | • Will become a member of | 1. | Will not become a member of | |
| • | Advertises specified VLAN. | specified VLAN if it receives |
| the specified VLAN. |
| • Can become a member of | advertisements for specified | 1. | Will not advertise specified | |
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| dynamic VLANs for which it | VLAN from another device. |
| VLAN. |
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| receives advertisements. | • Will advertise specified VLAN. | 1. | Can become a member of |
| • | Advertises dynamic VLANs | • Can become a member of |
| other dynamic VLANs for |
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| that have at least one other | other, dynamic VLANs for |
| which it receives |
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| port (on the same switch) as a | which it receives |
| advertisements. |
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| member. | advertisements. | 1. | Will advertise a dynamic VLAN |
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| • Will advertise a dynamic VLAN |
| that has at least one other port |
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| that has at least one other port |
| on the same switch as a |
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| (on the same switch) as a |
| member. |
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| member. |
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