User`s guide

XSR User’s Guide 115
Chapter 6 Configuring BAP
Configuring PPP
One function central to DoD is the XSR’s ability to perform LAN route
spoofing, a means of maintaining routes in the routing table while keeping
unused lines physically down.
The router brings up a line only when it receives a data packet and tears it
down when idle timeout values are reached. Spoofing on the XSR is
applicable to the dial out router only. Additional configuration includes
specifying call/callback request (for BAP configurations) and load threshold
(BoD) values.
On the XSR, DoD automatically brings up the first link if the router is the
caller, and BAP negotiates raising the remaining links as they are needed.
The following tasks are required to configure BAP:
 Set up PRI/BRI physical interfaces
 Configure BAP values such as the load threshold and phone numbers
The following examples configure BAP, DoD, Call Request and Callback
Request features on connected XSRs.
Dual XSRs: One Router Using DoD with Call Request
The following example sets up BAP on connecting XSRs over PRI and BRI
interfaces with each capable of calling the other. The configurations are
complimentary except only one XSR will add or remove links.
XSR1 Configuration
1 Begin configuring XSR1 by setting up the T1 controller (PRI interface):
XSR1(config)#controller t1 1/0
XSR1(config-controller<T1-1/0>)#pri-group
XSR1(config-controller<T1-1/0>)#isdn bchan-number-order ascending
XSR1(config-controller<T1-1/0>)#no shutdown
XSR1(config-controller<T1-1/0>)#dialer pool-member 1 priority 0
2 Configure BRI interface 2/0 with the basic-ni1 switch type and two SPIDs:
XSR1(config)#interface bri 2/0
XSR1(config-if<BRI-2/0>)#isdn switch-type basic-ni1
XSR1(config-if<BRI-2/0>)#isdn spid1 0337250001
XSR1(config-if<BRI-2/0>)#isdn spid2 0337250101