ccna 1 chapter 8 pdf

ccna 1 chapter 8 pdf.The second major section of this chapter begins with a discussion of the concept of PPP, including an example (validation) of more advanced PPP features. Finally, there are some configuration examples using PPP.PPP Basic Concepts PPP provides several basic but important features that are primarily used to connect two devices on a leased line, see the following list. /. Speech Capture The definition of headers and tails allows the transmission of data frames over the link. (If. synchronous and asynchronous links are supported. The protocol type field in the header allows multiple Layer 3 protocols to pass over the same link.Built-in authentication tools: PasswordAuthenticationProtocol (PAP) and Challenge Handshake Authentication Protocol (CHAP) oFor each of the higher-level protocols running on top of PPP, the control protocols allow for easier integration and support. The next section further examines protocol fields, authentication, and control protocols.1. PPP FramesOne of the more important features of the PPP standard is the protocol field, which is not present in the HDLC standard. The protocol field identifies the type of packet in the frame. When PPP is created, this field allows packets from several different Layer 3 protocols to be transmitted over a single link. Currently, the Protocol Type field still provides the same functionality, and can even support two different IP versions (IPv4 and IPv6). Figure 12-12 shows a PPP group frame (framing), which happens to be a mirror of Cisco's proprietary HDLC group frame including a Protocol Type field (shown in Figure 12-9)._____________PPP .Byte 111 2 available* | 2Figure 12-12 PPP Frame StructurePPP Control Protocol