6-4
Configuring the Data Link Layer Protocol for E1, T1, and Serial Interfaces
Configuring the Logical Interface
PPP Overview
PPP is a suite of protocols, rather than just a single protocol. (See Figure 6-2.)
The PPP suite includes several types of protocols:
■ link control protocol (LCP)
■ authentication protocols
■ network control protocols (NCPs)
■ PPP
Each type of protocol has a specific role in establishing and maintaining a PPP
connection
Figure 6-2. Protocols in the PPP Suite
Establishing a PPP Connection
When two peers try to establish a PPP connection, they must exchange
protocols in the following order:
1. LCP
2. Authentication protocol
3. NCP
4. PPP
Link Control Protocols
LQR DTP
LEX BAP
LCP
Network Control
Protocols
IPCP BCP
ECP CSCP
LLDPCP LEXCP
ATCP CCP
BACP SNACP
SDCP IPXCP
Authentication
Protocols
PAP CHAP
EAP
PPP
1
2
4
3
ProCurve Secure Router supports the protocols that are underlined.
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