Section 3.0: ISDN Configuration (8 points)
3.1: Basic ISDN (4 points)
Configure ISDN on R1 and R3. Use network 31.31.31.0/24. 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.
ISDN information:
BRI number on R3 is 99281766 BRI number on R1 is 99281764 Switch-type = basic-ts013
3.2: PPP Callback (4 points)
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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.