User guide

Chapter 4 - ProxyServer Software

MTPSR2-201

Protocol) messages. These messages can be useful as troubleshooting tools; however, it is

recommended that under normal circumstances all items should be disabled to avoid degradation of

ProxyServer performance.

The ProxyServer is capable of performing MultiLink Point-to-Point Protocol (MLPPP). MLPPP

provides the opportunity for greater bandwidth by bundling WAN port links. Check MultiLink PPP

(MLPPP) to enable this option if your ISP provides this support.

Note: For link bundling to occur, you need to make sure that the User Names and Passwords of both

WAN port links are identical. Verify and/or change them using the WAN tabs.

If the Need to dial out initially option is enabled (the default, WAN Port 2 ONLY) the ProxyServer

will (at startup) dial the phone number entered in the Dial Number window. If this option is disabled,

then the ProxyServer will not dial out until it receives a request to dial out.

The Echo Request group allows you to configure the Link Control Protocol (LCP) Echo Request

parameters. Options include Maximum Number of unacknowledged LCP Echo requests allowed

before triggering the termination of the link to the peer (valid range is 1 to 20 with a default of 6

requests) and Send Interval defines the interval that the LCP will insert between two consecutive

LCP Echo Requests (valid range is 0 to 65535 with a default of 0 seconds).

The Termination Request group allows you to configure the Link Control Protocol (LCP) Termination

Request parameters. Options include Maximum Number of LCP Termination Requests issued after

the completion of a back-off interval (valid range is 1 to 20 with a default of 10 requests); and, Send

Interval Max defining the interval that the LCP will insert between two consecutive LCP Termination

Requests (valid range is 5 to 65535 with a default of 5 seconds).

The Configurations Requests group allows you to configure the Link Control Protocol (LCP)

Configuration Request parameters. Options include Maximum Number of requests to be sent before

backing off due to no response (valid range is 3 to 65535 with a default setting of 6 requests); Send

Interval Max defining the interval between two consecutive LCP configuration requests (valid range is

5 to 65535 with a default of 5 seconds); and, Backoff Interval defining the interval that the LCP will

insert once the unanswered Maximum Number of Configuration requests has been reached (valid

range is 5 to 65535 with a default of 5 seconds).

Enabling MultiLink PPP

If you have an optional DCE device connected to WAN 2, the ProxyServer can be configured to

make use of MultiLink Point-to-Point Protocol (MLPPP). This feature allows the ProxyServer to bond

the WAN ports (56K DSU and RS232/V.35) together and dynamically allocate bandwidth to LAN

users. By this method, a single LAN client could make use of both WAN ports until another client

requires access, at which time the ProxyServer shares the WAN ports between the clients.

The ProxyServer supports MultiLink Point-to-Point Protocol (MLPPP) on its WAN ports. This protocol

allows the two WAN ports to act as a single pipeline using only one IP address to provide maximum

bandwidth. Applications such as Telnet, FTP, and Web browsers can run a single session out of the

ProxyServer and achieve greater bandwidth depending on line conditions.

In order to use MLPPP you have to enable it on the ProxyServer and have a network connection that

supports it. The two primary uses would be with an Internet Service Provider (ISP) account or with a

corporate site. In each case, MLPPP must be supported. The more common use for MLPPP is on a

corporate site running on server platforms such as Windows NT Server 4.0