Hi this is my problem:
We were using a cisco local director 417 for load balancing. It was configured with a static ip address and 4 virtual ip addresses.
Due to the fact that it couldnt provide SNAT we have to replace it with a Big-IP f5 application switch. I have configured the application switch with exactly the same ip addresses as the cisco local director, both the same static IP address and same virtual ip addresses, I have tested the new application switch in a test environment and it was configured correctly and worked properly.
I presumed that i would just be able to unplug the old cisco local director and plug in the new application switch and it would just start working.
I unplugged the local director and plugged in the application switch. I could connect to the GUI interface of the application switch via connecting to its static IP address. I could also connect to all the virtual ip addresses from the servers plugged directly into the application switch. However if i tried to coonet to the virtual addresses from a computer on the extranet it would time out. I can ping the static ip address of the application switch but not the virtual ip addresses.
The network environment that this is hosted in is made up of lots of smaller networks all joined together by switches and routers.
Would the reason why i could not connect to the virtual addresses externally be something to do with the ARP addresses and the ARP caches of the network devices that need to be refreshed with the MAC address of the new application switch?? or could it be down to another problem?
Help is greatly appreciated.
We were using a cisco local director 417 for load balancing. It was configured with a static ip address and 4 virtual ip addresses.
Due to the fact that it couldnt provide SNAT we have to replace it with a Big-IP f5 application switch. I have configured the application switch with exactly the same ip addresses as the cisco local director, both the same static IP address and same virtual ip addresses, I have tested the new application switch in a test environment and it was configured correctly and worked properly.
I presumed that i would just be able to unplug the old cisco local director and plug in the new application switch and it would just start working.
I unplugged the local director and plugged in the application switch. I could connect to the GUI interface of the application switch via connecting to its static IP address. I could also connect to all the virtual ip addresses from the servers plugged directly into the application switch. However if i tried to coonet to the virtual addresses from a computer on the extranet it would time out. I can ping the static ip address of the application switch but not the virtual ip addresses.
The network environment that this is hosted in is made up of lots of smaller networks all joined together by switches and routers.
Would the reason why i could not connect to the virtual addresses externally be something to do with the ARP addresses and the ARP caches of the network devices that need to be refreshed with the MAC address of the new application switch?? or could it be down to another problem?
Help is greatly appreciated.
