1-what is the diffrence between hdlc and ppp protocol
2- why frame realy technogy called NBMA
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Answer Posted / nathan
Point-to-point links have two options for encapsulation.
HDLC - is cisco proprietary
PPP – is open standard works on any vendor hardware
On Cisco routers the default encapsulation on serial
interfaces HDLC.
Both ends of a PTP link must use the same encapsulation.
If one Cisco router is using HDLC the other end must be a
Cisco router since the version of HDLC on Cisco routers is
Cisco Propriety.
NBMA- Non Broadcast Multi Access.
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