7

IP MULTIPLEXING HDLC

CONFIGURATIONS

7.1Connecting a Black Box Router to a Router/CSU

via HDLC

The following diagram details a single T1 connection between a Black Box and a remote router/CSU combination. Secondary IP addressing is used for IP multiplexing.

Figure 15 IP Multiplexing Application

10.1.1.2/24

Router/

T1 CSU

10.1.1.3/24

Telco

 

T1

CT3

 

LR1104A

192.5.75.1/24

192.5.75.0/24

129.1.1.2/24

 

Primary: 129.1.1.1/24

 

Secondary: 10.1.1.1/24

 

Router

SITE 1

SITE 2

The two sites communicate over a single T1 channel. The Site 2 WAN bundle, named “ToSite1”, consists of a single T1 channel coming in via a CT3 circuit. Site 1 router's default route is directed to the Site 2 router: 0.0.0.0/0 10.1.1.1

The Site 2 router is configured with: primary ethernet address: 129.1.1.1/24, secondary ethernet addr on the WAN

subnet: 10.1.1.1/24, and route to the Site 1 router: 192.5.75.0/24 10.1.1.3.

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Black Box LR1102A-T1/E1 manual IP Multiplexing Hdlc Configurations, 1Connecting a Black Box Router to a Router/CSU Via Hdlc