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NOTE
Before you enable sFlow, make sure the device has an IP address that sFlow can use as its source
address. Refer to
sFlow and agent address on page 247 for the source address requirements.
NOTE
When you enable sFlow forwarding on an 802.1X-enabled interface, the samples taken from the
interface include the username used to obtain access to either or both the inbound and outbound ports,
if that information is available. For information about 802.1X, refer to "802.1X Port Security" chapter in
the
FastIron Ethernet Switch Security Configuration Guide
Command syntax for enabling sFlow forwarding
This section shows how to enable sFlow forwarding.
Globally enabling sFlow forwarding
To enable sFlow forwarding, you must first enable it on a global basis, then on individual interfaces or
trunk ports, or both.
To globally enable sFlow forwarding, enter the following command.
device(config)#sflow enable
You can now enable sFlow forwarding on individual ports as described in the next two sections.
Syntax: [no] sflow enable
Enabling sFlow forwarding on individual interfaces
To enable sFlow forwarding enter commands such as the following.
device(config)#sflow enable
device(config)#interface ethernet 1/1 to 1/8
device(config-mif-1/1-1/8)#sflow forwarding
These commands globally enable sFlow, then enable sFlow forwarding on Ethernet ports 1/1 - 1/8. You
must use both the
sflow enable and sflow forwarding commands to enable the feature.
Syntax: [no] sflow enable
Syntax: [no] sflow forwarding
Enabling sFlow forwarding on individual trunk ports
This feature is supported on individual ports of a static trunk group. It is also supported on LACP trunk
ports.
NOTE
When you enable sFlow forwarding on a trunk port, only the primary port of the trunk group forwards
sFlow samples.
Command syntax for enabling sFlow forwarding
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