Enterasys Networks X-PeditionTM manual Leased-Line Configuration Model, Interface BRI 0/1/21

ISDN Configuration

Be aware that the isdn bchan-number-ordercommand forces the PRI interface to make outgoing calls in ascending or descending order. The command is recommended only if your service provider requests it to lessen the chance of call collisions.

Leased-Line Configuration Model

The BRI Leased Line application supports two basic modes: each B channel is routed to a different destination or both B channels are bounded. Only one BRI-specific command is needed for this application, leased-line, which can be configured at 56, 64, 112, 128, or 144 Kbps.

Note: Be aware that two data streams are supported, one on each B channel, at 56 and 64 Kbps only, and one data stream is supported over the bounded B1 + B2 or B1+B2+D line at 112, 128, or 144 Kbps only.

Figure 11-3illustrates how a Leased Line application is configured on the XSR’s BRI NIM card (XSR 1800/3000 Series) with either PPP or Frame Relay encapsulation.

Figure 11-3 BRI Leased Line Application

IP

interface BRI 0/1/1

leased-line BRI 0/1/1 56 64 leased-line BRI 0/1/1 56 64

interface BRI 0/1/1

leased-line BRI 1/1 112128144

interface BRI 0/1/1:1 ip address 1.1.1.2 255.255.255.0 encapsulation ppp

... any serial interface command

B1

Leased S/T or U BRI line

interface BRI 0/1/1:2 ip address 1.1.1.3 255.255.255.0 encapsulation FR

... any serial interface command

B2

LL

interface BRI 0/1/2:1

ip address 1.1.1.3 255.255.255.0 encapsulation FR

... any serial interface command

LL

Leased S/T or U BRI line

The following commands, as shown in Figure 11-3, add two leased lines on BRI 0//1/1 B- channels 1 and 2 with PPP and Frame Relay encapsulation on either line. You can add other serial interface commands as needed..

Note: ISDN BRI can be configured on XSR 1200 Series routers but only on interface BRI 0:<1- 2>.<1-30>. All BRI examples in this chapter reference Ethernet interfaces on XSR 1800/3000 Series routers.

XSR(config)#interface bri 0/1/1

XSR(config-if<BRI-1/1>)#leased-line bri 0/1/1 56

XSR(config-if<BRI-1/1>)#leased-line bri 0/1/1 56

XSR(config-if<BRI-1/1>)#no shutdown

XSR(config)#interface bri 0/1/1:1

XSR(config-if<BRI-1/1:1>)#ip address 1.1.1.2 255.255.255.0

XSR(config-if<BRI-1/1:1>)#encapsulation ppp

XSR(config-if<BRI-1/1:1>)#no shutdown

XSR(config)#interface bri 0/1/1:2

11-14 Configuring Integrated Services Digital Network