Configuring Extreme switches

The following commands configure an Extreme Networks switch (10.0.0.246), sampling packets at 1-in-512, polling counters every 30 seconds and sending the sFlow to an analyzer (10.0.0.50) over UDP using the default sFlow port (6343):

enable sflow
configure sflow agent 10.0.0.246
configure sflow collector 10.0.0.50 port 6343
configure sflow sample-rate 512
configure sflow poll-interval 30
enable sflow backoff-threshold
configure sflow backoff-threshold 100
enable sflow ports all

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

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

Note: Extreme Networks switches support automatic backoff of sampling rates based on a settable samples-per-second threshold. This mechanism ensures that a poorly selected sampling rate will not generate excessive numbers of samples (see sFlow Version 5, section 4.2.2).

Configuring Force10 switches

The following commands configure a Force10 switch (10.0.0.245), sampling packets at 1-in-512, polling counters every 30 seconds and sending the sFlow to an analyzer (10.0.0.50) over UDP using the default sFlow port (6343):

config> sflow collector 10.0.0.50 agent-addr 10.0.0.245
config> sflow sample-rate 512
config> sflow polling 30
config> sflow enable

Then for each interface:

interface> sflow enable

You can also use the following command to list the configuration settings:

show sflow
A previous posting discussed the selection of sampling rates. Additional information can be found on the Force10 Networks web site.
See Trying out sFlow for suggestions on getting started with sFlow monitoring and reporting.

Configuring Brocade switches

The following configuration enables sFlow monitoring of all interfaces on a Brocade (formerly Foundry) FGS switch, sampling packets at 1-in-512, polling counters every 30 seconds and sending the sFlow to an analyzer (10.0.0.50) on UDP port 6343 (the default sFlow port):

fgs(config)# int e 0/1/1 to 0/1/24
fgs(config-mif-0/1/1-0/1/24)# sflow forwarding
fgs(config-mif-0/1/1-0/1/24)# exit
fgs(config)# sflow destination 10.0.0.50 6343
fgs(config)# sflow sample 512
fgs(config)# sflow polling-interval 30
fgs(config)# sflow enable

You can also use the following command to list the configuration settings:

fgs# show sflow

A previous posting discussed the selection of sampling rates. Additional information can be found on the Brocade web site.

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

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.