In Figure 20.24, assume that the intra-AS routing protocol used by AS1 is OSPF, but the one

Question:

In Figure 20.24, assume that the intra-AS routing protocol used by AS1 is OSPF, but the one used by AS2 is RIP. Explain how R5 can find how to route a packet to N4.

Figure 20.24 A sample internet with four ASs N13 ASI N7 N8 RI NI N2 R4 R9 NI5 N5 N4 N14 R5 R2 N3 R3 AS4 N9 N6 AS2 Legend Point-to-point WAN R6 NIO R7 AS3 LAN Router N11 R8 N12