Please enable JavaScript.
Coggle requires JavaScript to display documents.
CONTRAST HDLC AND PPP - Coggle Diagram
CONTRAST HDLC AND PPP
High-Level Data Link Control (HDLC)
Layer 2 protocol for point-to-point serial links
Features
2Versions
Cisco Proprietary
Device must use the same version of HDLC
Cisco HDLC cannot be used by non Cisco devices
Original
Device must use the same version of HDLC
Identify Contents
When Layer 3 packet put into layer 2 frame, the layer 3 protocol needs to be identify
Simple protocol
Error Detection
Discards errored frames
Uses the FCS in the trailer
Does not perform error recovery
Point-to-Point Protocol (PPP)
Created after HDLC
Features
(Richer and more robust than HDLC)
Authentication
Compression
Multilink
Enables load balancing over multiple circuits
Error Detection
Identify Contents
PPP automatically identifies the Layer 3 protocol
Vendor Neutral
Can used different version router
Two Sub-Layers
NCP (Network Control Program)
Layer 2 Link Setup
LCP (LinkControl Protocol)
Layer 3 Encapsulation