Configuring Juniper switches

The following configuration enables sFlow monitoring of all interfaces on a Juniper EX3200 switch, sampling packets at 1-in-500, polling counters every 30 seconds and sending the sFlow to an analyzer (10.0.0.50) on UDP port 6343 (the default sFlow port).

protocols {
 sflow {
  polling-interval 30;
  sample-rate 500;
  collector 10.0.0.50 {
   udp-port 6343;
  }
  interfaces ge-0/0/0.0;
  interfaces ge-0/0/1.0;
  interfaces ge-0/0/2.0;
  interfaces ge-0/0/3.0;
  interfaces ge-0/0/4.0;
  interfaces ge-0/0/5.0;
  interfaces ge-0/0/6.0;
  interfaces ge-0/0/7.0;
  interfaces ge-0/0/8.0;
  interfaces ge-0/0/9.0;
  interfaces ge-0/0/10.0;
  interfaces ge-0/0/11.0;
  interfaces ge-0/0/12.0;
  interfaces ge-0/0/13.0;
  interfaces ge-0/0/14.0;
  interfaces ge-0/0/15.0;
  interfaces ge-0/0/16.0;
  interfaces ge-0/0/17.0;
  interfaces ge-0/0/18.0;
  interfaces ge-0/0/19.0;
  interfaces ge-0/0/20.0;
  interfaces ge-0/0/21.0;
  interfaces ge-0/0/22.0;
  interfaces ge-0/0/23.0;
 }
}

A previous posting discussed the selection of sampling rates. Additional information on configuring Juniper switches can be found on the Juniper Networks web site.

See Trying out sFlow for suggestions on getting started with sFlow monitoring and reporting.