Chapter
3: Web Management
Configuration - sFlow
PoE Switch User Manual | 206
must be confirmed (a confirmation request will appear).
IP Address/Hostname
The IP address or hostname of the sFlow receiver. Both IPv4 and IPv6 addresses are
supported.
UDP Port
The UDP port on which the sFlow receiver listens to sFlow datagrams. If set to 0 (zero), the
default port (6343) is used.
Timeout
The number of seconds remaining before sampling stops and the current sFlow owner is
released. While active, the current time left can be updated with a click on the Refresh-button.
If locally managed, the timeout can be changed on the fly without affecting any other settings.
Max. Datagram Size
The maximum number of data bytes that can be sent in a single sample datagram. This
should be set to a value that avoids fragmentation of the sFlow datagrams. Valid range is 200
to 1468 bytes with default being 1400 bytes.
Port Configuration
Port
The port number for which the configuration below applies.
Flow Sampler Enabled
Enables/disables flow sampling on this port.
Flow Sampler Sampling Rate
The statistical sampling rate for packet sampling. Set to N to sample on average 1/Nth of the
packets transmitted/received on the port.
Not all sampling rates are achievable. If an unsupported sampling rate is requested, the
switch will automatically adjust it to the closest achievable. This will be reported back in this
field.
Flow Sampler Max. Header
The maximum number of bytes that should be copied from a sampled packet to the sFlow
datagram. Valid range is 14 to 200 bytes with default being 128 bytes.
If the maximum datagram size does not take into account the maximum header size, samples
may be dropped.
Counter Poller Enabled
Enables/disables counter polling on this port.
