Configure Point to Point Protocols

Want to configure point to point protocols, and loop back interfaces should not be advertised in Routing protocols


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3 Answers
  • Point-to-Point Protocol (PPP) is an open standard protocol that is mostly used to provide connections over point-to-point serial links. The main purpose of PPP is to transport Layer 3 packets over a Data Link layer point-to-point link. PPP can be configured on:
    + Asynchronous serial connection like Plain old telephone service (POTS) dial-up
    + Synchronous serial connection like Integrated Services for Digital Network (ISDN) or point-to-point leased lines.
    PPP consists of two sub-protocols:
    + Link Control Protocol (LCP): set up and negotiate control options on the Data Link Layer (OSI Layer 2). After finishing setting up the link, it uses NCP.
    + Network control Protocol (NCP): negotiate optional configuration parameters and facilitate for the Network Layer (OSI Layer 3). In other words, it makes sure IP and other protocols can operate correctly on PPP link

    client#int s0/0/0
    client#ip add 192.168.0.1 255.255.255.0
    client#encapsulation ppp
    client#ppp pap sent-username server password pass tut2
    client#username client password tut1
    server#username server password tut2
    server#int s0/0/1
    server#ip add 192.168.0.2 255.255.255.0
    server#encapsulation ppp
    server#ppp pap sent-username client password pass tut1

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