[[In Figure , RTA, RTB, and RTC share a common multiaccess medium. RTA and RTC are running EBGP, while RTC and RTB are running OSPF. RTC has learned network 188.8.131.52/24 from RTB by way of OSPF and is advertising it to RTA by way of EBGP. Since RTA and RTB are running different routing protocols, it would seem logical that RTA would consider RTC (10.10.10.2) as its next hop to reach 184.108.40.206/24. However, this would not happen. The correct behavior is for RTA to consider RTB, 10.10.10.3, as the next hop because RTB shares the same medium with RTC]].
1- What are these two different protocols (between these ip addresses 10.10.10.3 and 10.10.10.1)?
2- He has mentioned that: "RTB shares the same medium with RTC", doesn?t RTB share the same medium with RTA as well ?
3- I did not get why he said : ?this would not happen.? ?
1: RTA and RTB are not exchanging their routing tables directly with eachother. This is due to the fact that they are not running the same routing protocol.
2: Yes, all three routers share the same medium.
3:The less ideal forwarding would be to sent the data to RTC first. It would then cross the same medium twice. The optimal routing is to forward directly to the router that is nearest to the destination (RTB). That is in fact what is happening because the next-hop attribute is exchanged with the OSPF update from RTC.
((This is due to the fact that they are not running the same routing protocol.))
Could you please tell me what are these two different protocols ? I meant to say what is routing protocol running on RTB's interace (10.10.10.3), because the author has not mentioned!!!! ,,,Is it OSPF as well ?
My understanding (correct me) to phrase "two different routing protocols" is two different IGPs routing protocol,,,,for this reason I wonder what are these two
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