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- When both ends of a serial WAN link are configured to run the PPP encapsulation method they establish a session based on the 3 steps below:

Step 1

- Link establishment and configuration negotiation

- In this phase LCP opens the connection between the two interfaces and negotiates configuration options. this phase is done once the receiving router sends a configuration-acknowledgment frame back to the router who first initiates the connection...


Step 2

- Link quality determination (optional)

- In this phase LCP tests the link between the routers to determine if the quality is sufficient to bring up the network layer protocol.

Step3

- Network Layer Protocol configuration negotiation

- After step 2 ends, the appropriate NCP can separately configure the network layer protocols, and bring the protocol up and down at any given time. If LCP closes the link between the routers it will inform the network layer protocol so that it can take action in regards to the interfaces.

- TERMS -


PPP = Point-to-Point Protocol

LCP = Link Control Protocol

NCP = Network Control Protocols

- hope this helps :)

- miirii

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