HP ProCurve 7000dl Series User Manual

6-48
Configuring the Data Link Layer Protocol for E1, T1, and Serial Interfaces
Example Networks
Example Networks
This section outlines examples of E1- and T1-carrier lines that use PPP, Frame
Relay, and HDLC as the Data Link Layer protocol. It also provides examples
of WANs that are using PPP authentication.
Example 1. Figure 6-9 shows a company’s WAN that includes a connection
between two offices in London. Because this company needed a constant,
reliable connection between these two offices, they leased an E1-carrier line
for both the Seething Lane and Chelsea Harbor offices. The Data Link Layer
protocol is PPP.
The company also required a connection to its Paris office. For this connec-
tion, the company negotiated an SLA with a Frame Relay service provider.
Finally, the company set up an Asymmetric Digital Subscriber (ADSL) line to
a local Internet Service Provider (ISP). Through this connection, the com-
pany’s employees can access the Internet. (For information about ADSL, see
Chapter 7: ADSL WAN Connections.)
Figure 6-9. Example WAN Using E1-Carrier Lines with PPP and Frame Relay
Figure 6-10 shows the configuration for the E1, PPP, and Frame Relay inter-
faces, as they appear in the running-config for Router B, the router for the
London Chelsea Harbor office.
Router B
E1 with
PPP
192.168.1.1
London
Chelsea Harbor
Internet
Router
ISP
Router A
London
Seething Lane
Office
Router C
Paris
E1 with
Frame Relay
10.1.1.1 /30
ADSL2+ Annex B
with PPPoE
Frame Relay
Network
E1 with
Frame Relay

HP ProCurve 7000dl Series Specifications

General

Brand	HP
Model	ProCurve 7000dl Series
Category	Network Router
Language	English