Connected: An Internet Encyclopedia
3.6. Network-Layer Protocol Phase
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RFC 1661
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3. PPP Link Operation
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3.6. Network-Layer Protocol Phase
3.6. Network-Layer Protocol Phase
Once PPP has finished the previous phases, each network-layer
protocol (such as IP, IPX, or AppleTalk) MUST be separately
configured by the appropriate Network Control Protocol (NCP).
Each NCP MAY be Opened and Closed at any time.
Implementation Note:
Because an implementation may initially use a significant amount
of time for link quality determination, implementations SHOULD
avoid fixed timeouts when waiting for their peers to configure a
NCP.
After a NCP has reached the Opened state, PPP will carry the
corresponding network-layer protocol packets. Any supported
network-layer protocol packets received when the corresponding NCP is
not in the Opened state MUST be silently discarded.
Implementation Note:
While LCP is in the Opened state, any protocol packet which is
unsupported by the implementation MUST be returned in a Protocol-
Reject (described later). Only protocols which are supported are
silently discarded.
During this phase, link traffic consists of any possible combination
of LCP, NCP, and network-layer protocol packets.
Next: 3.7. Link Termination Phase
Connected: An Internet Encyclopedia
3.6. Network-Layer Protocol Phase