Forum Discussion
Sumanta_88744
Cirrus
CirrusCreating an active-active DSC configuration with OSPF routing on 11.x
Hi Experts
I have to do a deployment of active/active VIPRION 2400 chassis, running 2250 blades. As per below link, we need to create two traffic groups for each VLAN. How will the default routi...
Kevin_Davies_40
Nacreous
NacreousIn order to use active-active you must use SNAT. Then default routing does not come into play. The return address will be the server side floating IP address of whichever traffic group passed the traffic. The return path to the client will use auto-lasthop feature.
Each traffic group must have a unique floating IP address assigned to it. They can be consecutive addresses in the same subnet. When traffic passes through a VS using an virtual address assigned to a traffic group then address translation will use the floating IP address assigned to that traffic group as the SNAT address for traffic on the way to the servers.
mimlo_61970
Cumulonimbus
CumulonimbusI believe Kevin is correct that you must use SNAT for active/active configurations. It is the only way to ensure the response traffic returns through the same LTM.
If these are http/https websites, you can use the x-forwarded-for header to pass the original IP information to the server for logging purposes