We have a small network which is completely serviced by a single StackWise stack of Catalyst 3750G and 3750E switches. There are no external connections. We recently purchased a 3750X switch with the C3KX-SM-10G Service Module for expansion, and for it's ability to allow Netflow monitoring of our network. However, I apparently misinterpreted the capabilities of the service module from the information I used to order it. I was hoping to be able to monitor all of my port-to-port on-switch traffic with Netflow, but I now understand that only the SFP ports on the service module itself can be monitored. We have nothing connected to those ports as we do not have a distributed switch network (once again, only a single stack).
Is there any kind of workaround for this that would allow me to use Netflow to monitor my on-switch traffic? I was thinking or maybe just connecting one of the SFP ports directly to my monitoring server, but there doesn't appear to be a 1000BaseT copper SFP module available for it, and even then the port-to-port traffic wouldn't really be travelling on the SFP. Did I waste my money buying the module?