Configuring Ip/Hdlc; Configuring Ip/Ethernet; Figure 19: Structure Of Cisco Hdlc Protocol - Juniper SYSTEM BASICS - CONFIGURATION GUIDE V 11.1.X Configuration Manual

JUNOSe 11.1.x System Basics Configuration Guide

Configuring IP/HDLC

The E Series router supports IP over Cisco HDLC on many types of serial interfaces.
Cisco HDLC monitors line status on a serial interface by exchanging keepalive request
messages with peer network devices. It also allows routers to discover IP addresses
of neighbors by exchanging Serial Link Address Resolution Protocol (SLARP) address
request and address response messages with peer network devices.
The E Series router Cisco HDLC is compatible with the Cisco Systems Cisco-HDLC
protocol, the default protocol for all Cisco serial interfaces.
The router supports the following framing features:

Figure 19: Structure of Cisco HDLC Protocol

As shown in Figure 19 on page 22, the Cisco HDLC protocol can exist directly on
top of the HDLC layer or ATM or SONET interface. Both SONET and DSx/Ex interfaces
are supported at the physical layer.
The following example configures HDLC on a serial interface. See JUNOSe Link Layer
Configuration Guide , for details.

Configuring IP/Ethernet

The E Series router supports IP/Ethernet. When you select an Ethernet interface, you
can assign an IP address to it, as the following example shows:
Figure 20 on page 23 shows an IP/Ethernet interface stack.
22
Configuring Data Link-Layer Interfaces
HDLC for data-link framing
18,000-byte information field size
host1(config)#interface serial 3/1:2/1
host1(config-if)#encapsulation hdlc
host1(config-if)#ip address 192.32.10.2 255.255.255.0
host1(config)#interface fastethernet 4/1
host1(config-if)#ip address 192.5.127.8 255.255.255.0