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4.3.4 GARP
Generic Attribute Registration Protocol (GARP) is a general-purpose protocol that registers any network connectivity or
membership-style information. GARP defines a set of devices interested in a given network attribute, such as VLAN or
Multicast address.
When configuring GARP, ensure the following:
• The leave time must be greater than or equal to three times the join time.
• The leave all time must be greater than the leave time.
Set the same GARP timer values on all Layer 2-connected devices. If the GARP timers are set differently on the Layer
2-connected devices, GARP application does not operate successfully.
The GARP page contains a link to the following topic:
• GARP Timers
GARP Timers
The GARP Timers page contains fields for enabling GARP on the device.
To open GARP Timer screen perform the folling:
1.
Click Switch -> GARP -> GARP Timer
2.
The GARP Timer screen is displayed as in Figure 3-57.
The page includes the following fields:
• Interface -- Determines if enabled on a port or on a LAG.
• GARP Join Timer (10 - 2147483640) -- Time, in milliseconds, that PDUs are transmitted. The possible field
value is 10-2147483640. The default value is 200 msec.
• GARP Leave Timer (10 - 2147483640) -- Time lapse, in milliseconds, that the device waits before leaving its
GARP state. Leave time is activated by a Leave All Time message sent/received, and cancelled by the Join
message received. Leave time must be greater than or equal to three times the join time. The possible field
value is 0-2147483640. The default value is 600 msec.
• GARP Leave All Timer (10 - 2147483640) -- Time lapse, in milliseconds, that all devices wait before leaving
the GARP state. The leave all time must be greater than the leave time. The possible field value is
0-2147483640. The default value is 10000 msec.
Figure 3-57 GARP Timers screen
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