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Configuring PPP Services

2-2

308639-14.00 Rev 00

PPP Overview

Point-to-Point Protocol (PPP) is a standard method of routing or bridging

datagrams between peer routers or other devices over serial point-to-point links

(Figure 2-1

Figure 2-1. Point-to-Point Network Connection

PPP serves three major functions:

• Data link layer connection and management

• Network layer connection and management

• Datagram encapsulation

PPP uses a suite of data link and network control protocols to connect peer

routers. PPP also allows peers to negotiate and determine data link and network

layer options, such as those listed in Table 2-1

and Table 2-2. When negotiations

complete successfully, PPP encapsulates the data and transmits it over the link.

LAN LAN

Router Router

Synchronous line

PPP0001A

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