Sflow - ZyXEL Communications XS3800-28 Cli Reference Manual

This chapter shows you how to configure sFlow to have the Switch monitor traffic in a network and send
information to an sFlow collector for analysis.
78.1 sFlow Overview
sFlow (RFC 3176) is a standard technology for monitoring switched networks. An sFlow agent embedded
on a switch or router gets sample data and packet statistics from traffic forwarded through its ports. The
sFlow agent then creates sFlow data and sends it to an sFlow collector. The sFlow collector is a server
that collects and analyzes sFlow datagram. An sFlow datagram includes packet header, input and
output interface, sampling process parameters and forwarding information.
sFlow minimizes impact on CPU load of the Switch as it analyzes sample data only. sFlow can
continuously monitor network traffic and create reports for network performance analysis and
troubleshooting. For example, you can use it to know which IP address or which type of traffic caused
network congestion.
78.2 Command Summary
The following section lists the commands for this feature.
Table 184 sflow Command Summary
COMMAND
interface port-channel <port-list>
no sflow
no sflow collector <ip-
address>

sflow

sflow collector <ip-address>
[poll-interval <20-120>]
[sample-rate <256-65535>]
no sflow
no sflow collector <ip-address>
sflow
DESCRIPTION
Enters config-interface mode for the specified port(s).
Disables sFlow on this port.
Removes the specified collector IP address from the
port.
Enables sFlow on this port. The Switch will monitor traffic
on this port and generate and send sFlow datagram to
the specified collector.
Specifies a collector for this port. You can set a time
interval (from 20 to 120 in seconds) the Switch waits
before sending the sFlow datagram and packet
counters for this port to the collector. You can also set
a sample rate (N) from 256 to 65535. The Switch
captures every one out of N packets for this port to
create sFlow datagram.
Disables the sFlow agent on the Switch.
Removes an sFlow collector entry.
Enables the sFlow agent on the Switch.
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