sFlow Diagnosing Switch Problems
page 32-30 OmniSwitch AOS Release 7 Network Configuration Guide June 2013
Sampler
The sampler is the module which gathers samples and fills up the sampler part of the UDP datagram.
Poller
The poller is the module which gets counter samples from Ethernet driver and fills up the counter part of
the UDP datagram.
Configuring a sFlow Session
To configure a sFlow receiver session, use the sflow receiver command by entering sflow receiver,
followed by the receiver_index, name, the name of the session and address, and the IP address of the
receiver.
For example, to configure receiver session 6 on switch 10.255.11.28, enter:
-> sflow receiver 6 name sflowtrend address 10.255.11.28
In addition, you can also specify optional parameters shown in the table below. These parameters can be
entered after the IP address.
For example, to configure sFlow receiver session 6 on switch 10.255.11.28 and to specify the packet-size
and timeout value, enter:
-> sflow receiver 6 name sflowtrend address 10.255.11.28 packet-size 1400 time-
out 600
To configure a sFlow sampler session, use the sflow sampler command by entering sflow sampler,
followed by the instance ID number, the slot number of the port to be monitored, a slash (/), and the port
number and receiver, the receiver_index.
For example, to configure sampler session 1 on port 2/3, enter:
-> sflow sampler 1 port 2/3 receiver 6
In addition, you can also specify optional parameters shown in the table below. These parameters can be
entered after the receiver index.
For example, to configure sFlow sampler session 1 on port 2/3 and to specify the rate and sample-hdr-size,
enter:
-> sflow sampler 1 port 2/3 receiver 6 rate 512 sample-hdr-size 128
keywords
timeout
forever
udp-port
packet-size
version
keywords
rate
sample-hdr-size
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