Chapter 9 VLAN
GARP Timers
Switches join VLANs by making a declaration. A declaration is made by issuing a Join message using GARP. Declarations are withdrawn by issuing a Leave message. A Leave All message terminates all registrations. GARP timers set declaration timeout values.
GVRP
GVRP (GARP VLAN Registration Protocol) is a registration protocol that defines a way for switches to register necessary VLAN members on ports across the network. Enable this function to permit VLAN groups beyond the local Switch.
Please refer to the following table for common IEEE 802.1Q VLAN terminology.
Table 16 IEEE 802.1Q VLAN Terminology
VLAN | TERM | DESCRIPTION | |
PARAMETER | |||
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VLAN Type | Permanent VLAN | This is a static VLAN created manually. | |
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| Dynamic VLAN | This is a VLAN configured by a GVRP registration/ | |
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| deregistration process. | |
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VLAN | Registration Fixed | Fixed registration ports are permanent VLAN | |
Administrative |
| members. | |
Control |
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| |
Registration | Ports with registration forbidden are forbidden to | ||
| |||
| Forbidden | join the specified VLAN. | |
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| Normal | Ports dynamically join a VLAN using GVRP. | |
| Registration |
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| |
VLAN Tag Control | Tagged | Ports belonging to the specified VLAN tag all | |
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| outgoing frames transmitted. | |
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| |
| Untagged | Ports belonging to the specified VLAN don't tag all | |
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| outgoing frames transmitted. | |
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| |
VLAN Port | Port VID | This is the VLAN ID assigned to untagged frames | |
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| that this port received. | |
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| Acceptable Frame | You may choose to accept both tagged and | |
| Type | untagged incoming frames, just tagged incoming | |
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| frames or just untagged incoming frames on a | |
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| port. | |
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| |
| Ingress filtering | If set, the Switch discards incoming frames for | |
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| VLANs that do not have this port as a member | |
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Enable VLAN Trunking on a port to allow frames belonging to unknown VLAN groups to pass through that port. This is useful if you want to set up VLAN groups on end devices without having to configure the same VLAN groups on intermediary devices.
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