Chapter 5: Using ISDN and DDR Technologies to Enhance Remote Connectivity

Labs:

5.5.4 You have just installed a new branch office that will use DDR to dial into your central site.  The next step is to configure routing so the branch office can successfully communicate with the central site using TCP/IP.  You will need to install a default route at the branch office pointing back at the central site.  At the central site you will need to add a static route for the branch office Ethernet network pointing back at the branch office router.  To ensure that the branch office can communicate with the rest of the central site, redistribute the static route to the core network running IGRP.
5.5.5 Given a Central site Cisco-IOS router with ISDN BRI capability and a branch office site Cisco-IOS router with ISDN BRI capability, configure both routers so that you can place an ISDN call between your two company sites.
5.5.6 The Denver office needs to control what interesting traffic will bring up the ISDN connection to the Phoenix office.  You will setup an extended ACL and apply it to the dialer group.
5.5.10 The Phoenix and Denver offices want to exchange routing updates without incurring large telecommunication bills. Your solution is to configure snapshot routing between the two routers.
5.6.1 Configure the branch office router and central site router to dial two B channels for a total link speed of 128kbps.  Use two dialer maps to dial the two phone numbers and enable PPP multilink.
5.6.5

You have other ISDN devices connected to the same ISDN line that your central router is connected to (this is possible with an S/T Interface).  To ensure that they don’t step on each other, we want to configure the central router to only answer calls that are placed to the 5554000 number.

5.8.1 Given a Central site Cisco-IOS router with ISDN PRI capability and branch office site Cisco-IOS routers with ISDN BRI capability, configure all routers so that you can place an ISDN call between your three company sites.