To add a relay protocol
Click +Add in the Relay Protocols view. The Add Relay Protocol dialog displays.
Enable the IP Helper application by selecting Enable Application.
If this option is disabled, all IP Helper cache is deleted.
Optionally, specify the IP Helper cache timeout, in seconds, in an increment of 10 from 10 to 60, in the Timeout field. If a timeout is not specified, a default value of 30 seconds is selected.
This field is ignored if Raw Mode is selected.
To prevent a cache from being created when a packet is forwarded by an IP Helper policy, select Raw Mode. Unidirectional forwarding is supported. This option is not selected by default.
Any time set in the Timeout field is ignored.