I'd definitely look at setting up an external source that pushes to both routers. You can either use the netconf or junoscript API yourself, or if you have any in-house linux experience you can check out the ansible based automation that Jeremy Schullman has been putting together:

https://github.com/jeremyschulman

Frank Sweetser fs at wpi.edu    |  For every problem, there is a solution that
Manager of Network Operations   |  is simple, elegant, and wrong.
Worcester Polytechnic Institute |           - HL Mencken

On 10/11/2013 6:23 PM, Jesse Thompson wrote:
Hello, my company is working to expand from one single upstream provider to
two upstream providers with two geographically distributed edge routers.

We currently have a firewall configured (primarily ACL-based) on our single
edge router, and we're wondering what's the best practice to handle the
firewall now that it has two attack surfaces hosted at different routers.
Is there a way the routers can be configured to share firewall rules?
Master/slave pattern? Push settings from a central authoritative source? Or
am I looking at things the wrong way somehow?

I figure I can't be the first person who has needed to extend a firewall to
multiple sites like this and keep it consistent, so any advice would be
appreciated.

Thanks. :)

- - Jesse Thompson
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