By default, Sniffer10G sends all packets to 1 user space receive ring.
If more than one ring is required, then one must choose between duplication and partitioning of incoming data. If the rings reside in different processes, process-sharing must be enabled.
These features can be enabled by exporting environment variables before tcpdump is run against a libpcap/SNF capable library.
For example, one possible configuration might be:
export SNF_NUM_RINGS=2 # for 2 receivers export SNF_FLAGS=0x301 # 0x300 for duplication and 0x1 for process sharing.
For more details, see "Advanced Libpcap usage" in the Sniffer10G Installation and User Guide, available on the Sniffer10G Download Page.
