A point-to-point connection with different vendor routers using HDLC as the encapsulation type cannot establish a connection. When you change the encapsulation type on both routers to PPP, the connection is established. Why did the routers establish a connection with PPP and not with HDLC?
What will be an ideal response?
HDLC is a vendor-specific protocol that is not compatible with other vendors' versions of
HDLc. Because PPP is an open standard protocol that functions in multivendor environment,
the communicating routers were allowed to establish a connection.
Computer Science & Information Technology
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