Giuseppe Larosa Mon, 05/04/2009 - 11:11

Hello Baljit,

you have already found the major difference PPP has an architected field to tell what is the upper layer protocol it supports.

Other differences exist:

PPP support authentication and has an advanced link negotiation.

PPP supports multilink PPP for link aggregation.

So you understand that PPP is not only a multiprotocol version of HDLC

Hope to help



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