Expressroute query

AzureUser-9588 151 Reputation points
2021-03-08T13:22:35.533+00:00

There is a maximum of 200 prefixes advertised on a single ExpressRoute connection, or through VNet peering using gateway transit. From documentation it is mentioned that if we exceed this 200 prefix limit on an ExpressRoute connection then the connection between the ExpressRoute circuit and the gateway will go down. Are there any workarounds which could help to overcome this?

Azure ExpressRoute
Azure ExpressRoute
An Azure service that provides private connections between Azure datacenters and infrastructure, either on premises or in a colocation environment.
342 questions
0 comments

1 answer

Sort by: Most helpful
Most helpful Newest Oldest
  1. SaiKishor-MSFT 17,216 Reputation points
    2021-03-08T21:34:01.017+00:00

    @AzureUser-9588

    Two workarounds would be as follows-

    1. Summarize routes on your on-premise so lesser number of routes can be advertised.
    2. Add another ER connection which would mean another 200 routes can be advertised.

    These are the available work arounds at the moment. Hope this helps. Please let us know if you have additional questions. Thank you!

    • Please do not forget to "Accept the answer" wherever the information provided helps you to help others in the community.
    0 comments