Automatic Vlan Registration; Garp; Table 15-1 Garp Terminology - ZyXEL Communications IES-1000 User Manual

added and deleted using GARP VLAN Registration Protocol (GVRP), where GARP is the Generic Attribute
Registration Protocol.
15.5

Automatic VLAN Registration

GARP and GVRP are the protocols used to automatically register VLAN membership across switches.
15.6

GARP

GARP (Generic Attribute Registration Protocol) allows network devices to register and de-register attribute values
with other GARP participants within a bridged LAN. GARP is a protocol that provides a generic mechanism for
protocols that serve a more specific application, for example, GVRP.
15.6.1 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Declarations are withdrawn by issuing a Leave message.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.
15.6.2 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 VLANs groups beyond the
local switch.
Please refer to the following table for common GARP terminology.
VLAN Type Permanent VLAN
Dynamic VLAN
VLAN Registration Fixed
Administrative
Registration
Control
Forbidden
Normal
Registration
VLAN Tag Tagged
Control
Untagged
VLAN

Table 15-1 GARP Terminology

This is a static VLAN created manually.
This is a VLAN configured by a GVRP registration/deregistration
process.
Fixed registration ports are permanent VLAN members.
Ports with registration forbidden are not allowed to register (join) this
VLAN.
Ports join a VLAN using GVRP.
Ports tag all (VLAN member) egress frames transmitted.
Ports do not tag all (VLAN member) egress frames transmitted.
IES-1000 User's Guide
15-3