Garp Vlan Registration Protocol (Gvrp); Garp Timers - Dell Force10 S2410-01-10GE-24P Configuration Manual

Generic Attribute Registration Protocol (GARP) provides a generic attribute dissemination protocol used
to support other protocols such as GVRP (GARP VLAN Registration Protocol. GARP is used to register
and deregister attribute values with other GARP participants within bridged LANs. When a GARP
participant declares or withdraws a given attribute, the attribute value is recorded with the applicant state
machine for the port from which the declaration or withdrawal was made.
A GARP participant exists per port per GARP application (e.g. GVRP). For details on GARP, GVRP, and
GMRP (GARP Multicast Registration Protocol) command syntax, see the GARP, GVRP, and GMRP
Commands chapter in the SFTOS Command Reference.

GARP VLAN Registration Protocol (GVRP)

• GVRP propagates VLAN membership throughout a network.
• GVRP allows end stations and switches to issue and revoke declarations relating to VLAN
membership.
• VLAN registration is made in the context of the port that receives the GARP PDU and is propagated to
the other active ports.
• GVRP is disabled by default; you must enable GVRP for the switch and then for individual ports.
• Dynamic VLANs are aged out after the LeaveAll Timer expires three times without receipt of a join
message.

GARP Timers

The following are GARP timers:
• Join Timer:
— Controls the interval of a GMRP PDU transmission
— Default value: 20 centiseconds
• Leave Timer:
— Controls the time period after the de-registration process is started for a registered
attribute. It should be at least twice the Join Timer.
— Default value: 60 centiseconds
• LeaveAll Timer:
— Controls the frequency with which a LeaveAll event GARP PDU is transmitted. It should
be considerably longer than the Leave Timer.
— Default value: 1000 centiseconds
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