RAD Data comm E1/T1 operation manual 33. IP/IPX Spoofing Parameters, Enabled Enabled COD

Chapter 5 Setup Menu FCD-IPMInstallation and Operation Manual

routers, answer for the remote devices. This fools (spoofs) the LAN device into thinking that the remote LAN is still connected, even though it is not. The spoofing saves the WAN bandwidth, because no packet is ever sent out on the WAN. Configure the following parameters for the Spoofing Menu.

Table 5-33. IP/IPX Spoofing Parameters

Parameters	Possible Values	Description
Keep Alive (IPX)	Enable	Enables/Disables the Keep Alive mode. Keep Alive mode allows the
	Disable	remote user to remain on the local server station list for a specified
		period of time during link disconnection
		Note: SPX spoofing is not supported.
RIP/SAP Spoofing		Spoofing is a technique used to reduce network overhead, especially
(IP/IPX)		in a WAN. Some network protocols send frequent packets for
		management purposes. These can be routing updates or keep-alive
		messages. In a WAN this can introduce significant overhead, due to
		the typically smaller bandwidth of WAN connections.
		Select this parameter to determine the length of time (in minutes)
		between exchange of RIP and IPX SAP tables over the WAN. This
		parameter is applicable unless spoofing mode is set to "Upon
		Change" only.

Change Link	Disabled (default)
Spoofing Mode

Enabled

Enabled COD

When disabled, RIP/SAP updates are sent:

•After a defined time (default time is 30 seconds IP, 60 seconds IPX RIP and SAP)

•When there is a change in the network topology; for example an interface goes up or down, or a routing entry aged

When enabled, RIP/SAP updates are sent:

•After a defined time

•When there is a change in the network topology

•After a defined time and a change in network topology

When this parameter is set to Enabled COD, updates are sent according to:

•The disabled parameter when the line is up.

•The enabled parameter when the line down.

5-96 WAN Economy Menu