Monday, April 13, 2020

Best practice for dynamic routing peering?

Hey all,

I'm a bit stuck here. I'm building out a new configuration which includes:

  • Fortigate 500E firewall (HA pair)
  • Brocade 7750 Core Switch
  • ISP MPLS connection (BGP)
  • ISP Internet connection

I plan to have the gateways for my private subnets on both the Firewall and the Core switch. (More secure networks on the Firewall so I can apply policies, less secure on the core)

I have a couple of options I'm considering, but I'm not sure which is best:

1) Terminate all ISP connections into Firewall (including MPLS) and then peer Firewall BGP with MPLS, and peer Firewall BGP/OSPF with Core Switch

2) Only terminate internet into Firewall, peer firewall with core switch BGP/OSPF, then peer core switch BGP with MPLS.

Not really sure what the pros/cons would be of each and which is best practice? I have a sister site that has a similar setup, it peers Firewall with core switch BGP, then core switch with MPLS router BGP, so maybe I'd just do that?



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