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Point-to-Point Protocol (PPP) Overview

364 Enterasys Xpedition User Reference Manual

• Committed information rate (CIR) of 20 million bits per second

• Leave high-, low-, and medium-priority queue depths set to factory defaults

• Random Early Discard (RED) disabled

• RMON enabled

The command line necessary to set up a service profile with the above attributes would be

as follows:

To assign the above service profile to the VC interface created earlier (slot 4, port 1):

Point-to-Point Protocol (PPP) Overview

Because of its ability to quickly and easily accommodate IP and IPX protocol traffic, Point-

to-Point Protocol (PPP) routing has become a very important aspect of WAN

configuration. Using PPP, you can set up router-to-router, host-to-router, and host-to-host

connections.

Establishing a connection in a PPP environment requires that the following events take

place:

• The router initializing the PPP connection transmits Link Control Protocol (LCP)

configuration and test frames to the remote peer to set up the data link.

• Once the connection has been established, the router which initiated the PPP

connection transmits a series of Network Control Protocol (NCP) frames necessary to

configure one or more network-layer protocols.

• Finally, when the network-layer protocols have been configured, both the host and

remote peer can send packets to one another using any and all of the configured

network-layer protocols.

The link will remain active until explicit LCP or NCP frames instruct the host and/or the

peer router to close the link, or until some external event (i.e., user interruption or system

time-out) takes place.

You can set up PPP ports on your XP with the commands described in Chapter 32: “port

Commands” in the Enterasys Xpedition Command Line Interface Reference Manual.

ssr(config)# frame-relay define service profile1 Bc 2000000 Be 10000000 becn-adaptive-shaping 65

cir 20000000 red off rmon on

ssr(config)# frame-relay apply service profile1 ports hs.4.1.100

1 2 ... 379 380 381 382 383 384 385 386 387 388 389 ... 393 394

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Cabletron Systems SSIM-R8-02 Spécifications Page 384