Section 3.0: ISDN Configuration (8 points)
3.1: Basic ISDN (4 points)
Configure ISDN on R1 and R3. Use network 188.8.131.52/24. Advertise this network in OSPF area0.
Configure redundancy such that if there is a change in backbone database on R3, BRI comes up and all traffic continues normally.
BRI number on R3 is 99281766 BRI number on R1 is 99281764 Switch-type = basic-ts013
3.2: PPP Callback (4 points)
R1 should call back R3 using Tacacs+. Configure static NAT translation on PIX for AAA server behind R6 to achieve this task, as shown in topology diagram Figure 1-1.