September 14, 2021 by Admin

You have 99 routes in your dynamic BGP propagated route table and you wish to add 2 more: 10.1.0.0 and 10.3.0.0. You cannot modify or remove routes that have already been announced.

What should you do?

• Summarize the two routes to combine them into one and advertise it. 
• Just advertise them, the 100 route limit is a “soft limit” and will be expanded automatically.
• You cannot add these routes.
• Call AWS support to increase your route limit.

Explanation:
You cannot add these routes. If you try to summarize them, that would create a 10.0.0.0/14, which is too low of a CIDR to advertise to AWS. AWS has a minimum of /16. You cannot have the 100 route limit modified in any way. It is a hard 100 route limit.