RAD Data comm Modular Access Device with Integrated Router, E1/T1 PPP Settings, Bod

FCD-IPMInstallation and Operation Manual Chapter 5 Setup Menu

PPP Settings

This option is only available for PPP link protocol.

		Table 5-6. PPP Settings
Parameters	Possible Values	Description
Header and	Yes, No	Used for troubleshooting only. Change the Header and Control Field
Control Field		Compression setting only if there is a problem with PPP negotiation
Compression
Protocol Field	Yes, No	Used for troubleshooting only. Change the Protocol Field Compression
Compression		setting only if there is a problem with PPP negotiation
IP Compression	Yes, No	Activates Van Jacobson TCP Header Compression on a specified link.
		PPP is often used on slow bandwidth links, such as modems. To make
		the transmission faster, certain parts of the data packets can be
		compressed.
		In Van Jacobson TCP Header Compression the TCP/IP packet header is
		compressed according to RRC 1144. Other protocols running over IP
		(for example, UDP, ICMP) are not affected by using Van Jacobson
		compression. Since PPP is used for point to point transmissions, both
		the local and remote devices must have Van Jacobson TCP Header
		Compression enabled for compression to be performed. To verify that
		Van Jacobson TCP Header Compression is being performed, open the
		Interface Connections Screen
Multilink		Determines if a line supports multilink PPP (RFC 1990 compliant).
	Disabled	The line does not support multilink PPP
	Enabled	The line supports multilink PPP
	BOD	The line enables multilink PPP with Bandwidth-on-Demand support
		(for ISDN line only).
		Permitting multilink PPP means that two neighboring links (or two
		ISDN B-channels) will work as a single logical channel, thereby
		increasing the total link bandwidth. If you select Permanent, then both
		links will be connected simultaneously, independent of bandwidth
		utilization. Using BOD permits you to be connected most of the time
		with only one B-channel and to be connected with the second channel
		for small periods of high bandwidth utilization. This method reduces
		connection costs.
		If you choose BOD, then configure the following parameters:
		Sensibility Direction and Sensibility Timeout.
BOD Sensibility	Transmit,	Defines the traffic direction to be counted in determining whether to
Direction	Receive, Both	connect the second line.
BOD Sensibility		Defines the time interval for the utilization count
Timeout

Routing/Bridging Menu 5-13