Hi,
We use Cisco Nexus 3550-F Fusion switch product in our HFT firm. Currently, we have two separate physical market data feed connections to exchange market, namely primary and secondary, which carries exact the same data. These two separate fiber links connect to our switch ports, say A1 and B1. There are also two router objects on these ports, say Primary and Secondary, respectively in order to assign IP addresses to these ports for multicast subscription.
There are two raw mode MUX objects, namely PRIMARY_MUX and SECONDARY_MUX, with upstream port A1 and A2-A3 downstream ports; with upstream port B1 and B2-B3 downstream ports respectively.
Then, separate cables on A2 and B2 ports are connected to SERVER1 on separate network interface cards; cables on A3 and B3 ports are connected to SERVER2 on separate network interface cards (Network cards are Cisco Nexus SmartNIC K3P-S FYI). Eventually, both SERVER1 and SERVER2 are fed by the same replicated data each consuming two network interfaces on each.
What we are aiming and hoping is combining two incoming streams into one in switch without losing any packet in any of the A1 and B1 connections and then replicating combined data and then sending combined data to SERVER1 and SERVER2. We could not much progress with MUX, patch and tap objects so far. We are considering using mirror objects with timestamping mode set to none to combine two incoming data (A1 and B1) and then replicating it with tap object and connecting servers to output port of mirror and replication of mirror. However, as far as I understand from documentation, mirror objects are primarily utilized for timestamping and monitoring purposes not for combining traffic. Aggregation is essentially MUX object's job with which we have had no luck so far. Also, I have seen no performance metrics in specs for mirror objects which is very important for us.
So what is your suggestion to our problem? Is it possible and plausible to do such a thing on switch? Or do you have a better and more sensible idea to fulfill our desire? By the way, we have not yet used any switch objects but since we (or will) have required license to create switch objects so if you have any solution using switch objects, you are welcome, too!
Thank you!
