BGP setup - "max prefixes" question

Showing results for 
Show  only  | Search instead for 
Did you mean: 

BGP setup - "max prefixes" question

L0 Member

We have a pair of 7050s that are Internet-connected via three ISPs. The ISPs are sending a limited set of routes (essentially the IP space they "own) down to our border routers. We want to replace the static default route we're using with BGP between the firewall and our border routers, but the total routes come to around 100k, which is over the 65k limit for 7050. We're thinking about setting the "max prefixes" setting to 15k for each of the three peers, which would get us most of the way there. I have two questions:

- How does the firewall decide which routes to accept

- I assume the default route is always accepted?

I can find very little information about the max prefixes setting other than the rather unhelpful "Specify the maximum number of supported IP prefixes (1 - 100000 or unlimited)." from the documentation (especially since 100k is more than any PAN model can handle).


L5 Sessionator

You can control the routes that will be installed from local rib to routing table bu the help of Import rule in the BGP configuration.

By default Default route is rejected.

Check the following screenshot I am only importing two routes.

BGP Import.png

Rate the helpful answer.

Like what you see?

Show your appreciation!

Click Like if a post is helpful to you or if you just want to show your support.

Click Accept as Solution to acknowledge that the answer to your question has been provided.

The button appears next to the replies on topics you’ve started. The member who gave the solution and all future visitors to this topic will appreciate it!

These simple actions take just seconds of your time, but go a long way in showing appreciation for community members and the LIVEcommunity as a whole!

The LIVEcommunity thanks you for your participation!