We've been using the LTM and ZebOS for some time now. Time and again we've run into OSPF bugs, and an upgrade usually resolved them. ZebOS's BGP has been relatively stable in that regard.
We're planning on extending our site (that will have its own DC), and need a (carrier-grade) router that'll potentially have a 100G pipe to the internet (and 10/40G connections internally). Would a Viprion 4800 chassis be a terrible choice for a router?
We'd like something that is MPLS L3/L2VPN capable, which F5 doesn't support yet. On the other hand, there could be load balancing requirements in the future, in which case, we'd have to drop an F5 behind an upstream Cisco/Juniper router. By having F5 as THE router for that site, we do away with SNAT (since it'll be inline for all the traffic), and take advantage of its ADC capabilities.
Amongst other things that concern me, since I haven't come across any vendor documentation, is whether F5 can hold the internet routing table (more than half a million routes) in its forwarding table, and if we're taking a performance hit by using a wildcard forwarding virtual server instead of hardware forwarding on a router.
Would appreciate any inputs on whether F5 should/shouldn't be a choice, or if someone in here is using F5s as backbone routers. TIA!