Which method of advertising networks from an autonomous system into BGP can result in the most instability?

Last Updated on July 31, 2021 by Admin 1

Which method of advertising networks from an autonomous system into BGP can result in the most instability?

  • Using the network command
  • Redistributing static routes into BGP
  • Redistributing dynamic routes into BGP
  • Redistributing static routes into IBGP
Explanation:
Redistributing dynamic IGP routes into BGP can result in instability, and is not recommended. Dynamic routes can disappear from the routing table, and even flap up and down constantly if there are link problems, especially with WAN links. If the networks are redistributed into BGP, their flapping can result in BGP updates about the route changing status, resulting in instability for BGP. Most ISPs guard against unstable routes and might threaten to cut off your BGP connectivity if you have flapping routes that cause BGP instability in their networks. The network command and redistributed static routes, on the other hand, tend not to change state so often. As a result, they are considered much more stable from a BGP perspective.

Objective:
Layer 3 Technologies
Sub-Objective:
Configure and verify manual and autosummarization with any routing protocol

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