Differences between HDLC and PPP are
HDLC
HDLC - High level data link control used in conjunction with Networking protocols like PPP (point-to-point) protocol. According to RFC 1662, PPP uses HDLC like frame by providing address and control fields. For PPP these fields are constants 0xFF and 0x03.
Authentication
idk.weeoll is money.
They cannot communicate.
there may be the issue with the layer 2 protocol like hdlc or ppp is not configured or wrongly configured if the interface is serial interface.
1. Frame Relay 2. HDLC 3. PPP
Which is the most common encapsulation in use on BRI Interface ? A. SDLC B. ATN C. HDLC D. PPP
The most common WAN data-link protocols are: 1. HDLC 2. PPP 3. Frame Relay 4. ATM
Data link layer protocols like PPP and HDLC define how data is encapsulated for transmission across a WAN link.
Serial interfaces do not pass any MAC information because the information is formed using WAN encapsulation (PPP. HDLC, Frame Relay).
HDLC (High-Level Data Link Control) is a bit-oriented synchronous data link layer protocol cHDLC (Cisco HDLC) was created by cisco to address the HDLC protocol's inability to provide multi-protocol support. Thus, cHDLC frames contain a field for identifying the network protocol being encapsulated. Ethernet networks are packet based and have no concept of a connection or circuit and also lack basic security features By using PPPoE (encapsulation), users can "dial" from one machine to another over an Ethernet network, establish a point to point connection between them and then securely transport data packets over the connection. Answer: security