When EIGRP loses a route and there is no feasible successor the route will go from passive to active and the router starts sending queries to its neighbors.EIGRP sends queries on all interfaces except the interface of the successor.Now there can be two things:-(1)Neighbor has information about this particular route and will send information about it to router . The query process is now over.(2)Nei... (more)

In OSPF , routes are redistributed with default metric that is 20,we call this metric 20 seed metric.

 

Whenever we redistribute some route information from one routing domain to another, we provide some metric value manually that is what we call "Seed Metric" We seeds some value manually because of metric compatibility issue in between different routing protocols. In case of RIP it's hope count, In EIGRP we have complex formula involving bandwidth, delay, reliability and load. etc...... (more)

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If you have E2, then closest ASBR is only chosen if there is a tie in the metric. That should always be the case if you redistribute with the same metric. You could redistribute with different metric if you want one path to always be preferred.   So E2 routes with same seed metric almost behaves like E1. If you have two E1 routes with same metric then both will be installed. But you could have ... (more)

If you have E2, then closest ASBR is only chosen if there is a tie in the metric. That should always be the case if you redistribute with the same metric. You could redistribute with different metric if you want one path to always be preferred.   So E2 routes with same seed metric almost behaves like E1. If you have two E1 routes with same metric then both will be installed. But you could have ... (more)

If you have E2, then closest ASBR is only chosen if there is a tie in the metric. That should always be the case if you redistribute with the same metric. You could redistribute with different metric if you want one path to always be preferred.   So E2 routes with same seed metric almost behaves like E1. If you have two E1 routes with same metric then both will be installed. But you could have ... (more)