Virtual Server using external site as pool member, routing problem?

you define a default route towards the internet most likely.

you can do this in the networking > route section

you will probably have to use source NAT as the external site has to return the traffic to the F5 or you end up with asymmetric routing.

As boneyard has said, you configure routes (default or otherwise) 'under' the Networking tab.

You need to consider routing for two things;

• Health Monitors - you'll need to ensure your F5 can reach your Pool Members and that they can respond to the Self IP(s) of the F5. How your routing is setup will determine which interface, VLAN and subnet and thus Self IP is used.
• Clients - you can SNAT, in which case you the same rules as per Health Monitors apply, or not, in which case you need to ensure your Pool Members route back to the client source IPs via the F5 (not directly). This isn't always possible, hence the common recommendation to SNAT.

Thank you for the replies, the thing that was causing my issue was simply the route. I really wasnt sure what to put in for the route and had used 0.0.0.0 for Destination and 255.255.0.0 for netmask.

After submitting a support ticket they had me put 0.0.0.0 for the netmask on my route. I had looked through the documentation and wasn't able to come up with that on my own, but this is now resolved.

To recap if this can help someone else.

Virtual server could not use externally hosted website as pool member, could use hosts on local vlans fine. Logged onto the f5 couldn't traceroute or ping the external site, obviously no route.

I needed to add a route on the f5 using 0.0.0.0 for the destination and netmask, and then pointed the gateway at my organizations outward bound router.