f) 6 marks) Consider the network scenario shown below. Two Routers R1 and R2 are
ID: 3890087 • Letter: F
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f) 6 marks) Consider the network scenario shown below. Two Routers R1 and R2 are directly attached to two subnets: 14.1.2.0/24 and 14.1.3.0/24. An aggregate (summary) route 14.1.2.0/23 is being advertised by both the routers. Suppose R2's interface to the subnet 14.1.2.0 is brought down due to a failure. Would R2 continue to advertise the aggregate route to R3? Why or why not? If yes, then would this lead to any routing inconsistencies? Explain. (200 words) R3 R1 R2 14.1.2.o/24 14.1.3.0/24 - > Packet Forwarding Path · Aggregate AdvertisementExplanation / Answer
Summarization reduces the size of route tables, prevents route table instability due to flapping routes, and reduces the size of routing updates.
The default is connected + summary. If you like you can mix some of the options with the exception of receive-only because it denies all advertisements. Redistribution is the importing and exporting of routing information from one routing protocol to another.
BGP route aggregation differs from IGP summarization in that the default behavior is to continue advertising all the more-specific routes of summarized by an aggregate. As we can see here, the aggregate was injected without affecting any of the more-specific routes. We can suppress all the summarized routes by recreating the aggregate route, this time appending the summary-only keyword.
R2 will continue to advertise the aggregate route to R3 due to its aggregation.It will also this lead to routing inconsistencies
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