HDLC is a layer two protocol that provides encapsulation method for serial link. ... Serial protocols and encapsulation methods are primarly descirbed in WAN technology. Router is used to connect two different technologies. HDLC is an encapsulation method for serial link.

What is HDLC used for?

HDLC is a group of data link (Layer 2) protocols used to transmit synchronous data packets between point-to-point nodes. Data is organized into addressable frames. This format has been used for other multipoint-to-multipoint protocols, and inspired the HDLC-like framing protocol described in RFC 1662.

What is encapsulation ppp command?

The Point-to-Point Protocol (PPP) is an encapsulation protocol for transporting IP traffic across point-to-point links. PPP is made up of three primary components: Link Control Protocol (LCP)—Establishes working connections between two points. Authentication protocol—Enables secure connections between two points.