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External and Internal BGP is on my old firewall, does XG need to know about them?

After more studying the configuration on my sonicwall that I am switching out with a XG 310, I have a question about BGP routing.  Based on the information below do I need to do any configuration to BGP routing on the XG?

2 cisco routers are connected to the external interfaces on the sonicwall in transparent mode with layer 3 routing.   Cables connected to the sonicwall are connected to the WAN interfaces on the cisco routers.  They have NATs that my network needs for applications to work.

I also have a third cisco router that is connected by a MPLS connection that is a backup to one of the 2 routers connected to the sonicwall.  There are static routes for networks to use the virtual router as the gateway to the network.

There is a virtual router configured that is suppose to chose the router that is coming in the fastest from the internet or the MPLS.

On the routing section of the sonicwall it show the external interfaces of the routers by default using external bgp routing

On the XG 310

I currently have static routes to the LAN interfaces on those routers, firewall rules to allow to allow networks to and from LAN with services = any.  

I created firewall nat rules that hopefully will enable me not to have a cable connected to the wan interface on those routers since the LAN interfaces are connected to my network.

I also created ACL rule for any allowing http and dynamic routing, and have dynamic routing enabled on LAN zone.



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