nanog mailing list archives
Re: Dynamic routing on firewalls.
From: santiago martinez <santiago.martinez.uk () gmail com>
Date: Thu, 5 Feb 2015 15:06:00 +0000
Hi, We are running Juniper SRX5000 family with around 40ish routing-instances, most of them using OSPFv2 without any issues. The RIBs are not too big, just a couple of them with thousands routes. I know that some guys are testing a similar environment on Fortigates and I'm not aware of any issues with routing so far. We also have SRX's running BGP+BFD (srx240) and again no issues at all. As Eugeniu mentioned, just be careful with the asymmetric routing, then is straight forward. Hope it helps. Santiago On Thu, Feb 5, 2015 at 2:42 PM, Eugeniu Patrascu <eugen () imacandi net> wrote:
On Thu, Feb 5, 2015 at 4:10 PM, David Jansen <david () nines nl> wrote:Hi, We have used dynamic routing on firewall in the old days. We did experience several severe outages due to this setup (OSPF en Cisco). Asyouwill understand i’m not eager to go back to this solution but I amcuriousabout your point of views. Is it advisory to so these days?Any specific firewall in mind? As this depends from vendor to vendor. I've had some issues with OSPF and CheckPoint firewalls when the firewalls would be overloaded and started dropping packets at the interface level causing adjacencies to go down, but I solved this by using BGP instead and the routing issues went away. On Juniper things tend work OK. Other than this, make sure you don't run into asymmetric routing as connections might get dropped because the firewall does not know about them or packets arrive out of order and the firewall cannot reassemble all of them.
Current thread:
- Dynamic routing on firewalls. David Jansen (Feb 05)
- Re: Dynamic routing on firewalls. Eugeniu Patrascu (Feb 05)
- Re: Dynamic routing on firewalls. Ray Soucy (Feb 05)
- Re: Dynamic routing on firewalls. David Jansen (Feb 05)
- Re: Dynamic routing on firewalls. David Jansen (Feb 05)
- Re: Dynamic routing on firewalls. ML (Feb 05)
- Re: Dynamic routing on firewalls. santiago martinez (Feb 05)
- Re: Dynamic routing on firewalls. Ray Soucy (Feb 05)
- Re: Dynamic routing on firewalls. Ralph J.Mayer (Feb 05)
- Re: Dynamic routing on firewalls. Owen DeLong (Feb 05)
- Re: Dynamic routing on firewalls. Joe Hamelin (Feb 05)
- Re: Dynamic routing on firewalls. Jeff McAdams (Feb 05)
- Re: Dynamic routing on firewalls. Bill Thompson (Feb 06)
- Re: Dynamic routing on firewalls. Doug Barton (Feb 06)
- Re: Dynamic routing on firewalls. Owen DeLong (Feb 07)
- Re: Dynamic routing on firewalls. BPNoC Group (Feb 08)
- Re: Dynamic routing on firewalls. Jeff McAdams (Feb 08)
- Re: Dynamic routing on firewalls. BPNoC Group (Feb 08)
- Re: Dynamic routing on firewalls. Owen DeLong (Feb 05)
- Re: Dynamic routing on firewalls. Eugeniu Patrascu (Feb 05)