In this setup the two routers are connected to subnets. They are both advertisin
ID: 3564466 • Letter: I
Question
In this setup the two routers are connected to subnets. They are both advertising an aggregate route to the third router. If router 2 suffers a link failure to one of the subnets, would it conitnue to advertise the aggregate route to R3? If it will, would this lead to routing inconsistencies?
In this setup the two routers are connected to subnets. They are both advertising an aggregate route to the third router. If router 2 suffers a link failure to one of the subnets, would it conitnue to advertise the aggregate route to R3? If it will, would this lead to routing inconsistencies?Explanation / Answer
The number of devices connected to the network grows. The result is increase in number of IP addresses. The time required for a router to look for an IP address in the routing table is also increased. The solution of this problem is Route Aggregation.
The Route Aggregation combines a group of routes with common addresses into a single entry in the routing table. The route aggregation reduces the routing table entries.
When a link failure occurs between a router and one of its subnet, then the router hides the link failure and continues the advertising. This hiding behaviour prevents the unnecessary routing protocol convergence (is the state of a set of routers that have the same topological information about the internetwork in which they operate) and keeps the internetwork stable.
All the traffic will be lost if the dead subnet is selected as the preferred exit point.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.