Configuring The Logical Interface - HP ProCurve Secure 7000dl Series Basic Management And Configuration Manual

Configuring the Data Link Layer Protocol for E1, T1, and Serial Interfaces

Configuring the Logical Interface

As outlined in Chapter 4: Configuring E1 and T1 Interfaces, all WAN
connections—including E1- and T1-carrier lines—require both a Physical
Layer and a Data Link Layer. (See Figure 6-1.) The Physical Layer encom-
passes:
the transmission media and other infrastructure required to create and
maintain the WAN connection
the electrical signaling specifications for generating, transmitting, and
receiving signals through the various transmission media
The Data Link Layer provides logical flow control for transmitting data
between the peers of a WAN connection.
7 Application Layer
6 Presentation Layer
5 Session Layer
4 Transport Layer
Network Layer
3
2 Data Link Layer
Physical Layer
1
Figure 6-1. Data Link Layer Is Layer 2 in the OSI module.
The ProCurve Secure Router supports the following Data Link Layer protocols
for E1, T1, and serial interfaces:
Point-to-Point Protocol (PPP), including Multilink PPP (MLPPP)
Frame Relay, including Multilink Frame Relay (MLFR)
High-Level Data Link Control (HDLC)
For more information about MLPPP and MLFR, see the Advanced Manage-
ment and Configuration Guide, Chapter 2: Increasing Bandwidth.
Configuring the Logical Interface
PPP
Frame Relay
HDLC
E1, T1, or serial
6-3