Help : Getting Started

The sFlow Probe must be installed and configured before it can start monitoring network traffic.

The following steps are needed to properly set up an sFlow Probe:

  1. Configure the probe.
  2. Connect the eth0 interface to a 10/100 port to the network (select a location that allows it communicate with the switches/routers it is to monitor. The sFlow Probe must be able to talk to the switches/routers via SNMP).
  3. Connect the eth1..ethN interfaces to the SPAN/Mirror ports to be monitored
    Note: For optimum performance these should be Tigon-based NIC cards.
  4. Configure the switch mirror/SPAN ports to send traffic to the probe.
    WARNING You can either mirror traffic in both direction from a single port, or mirror inbound traffic on multiple ports. Any other configuration will result in inaccurate results (see Port Mirroring).
  5. Configure NetFlow sources to send NetFlow packets to the sFlow probe (using the port that was configured in the pkp.ini file created in step 1).
  6. Check the sFlow Probe has SNMP read access to the switch/router by: 
    snmpwalk <switch/router IP> <community>.
  7. Verify that the sFlow Probe is operating correctly by checking the performance counters.

At this point your sFlow Analyzer should be receiving the sFlow packets.