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Receiver Configuration
Owner
sFlow can be configured in two ways. Through local management using the Web or CLI
interface or through SNMP. This read-only field shows the owner of the currently sFlow
configuration and assums calues as flollows:
If sFlow is currently unconfigured/unclaimed, Owner contains <none>.
If sFlow is currently configured through Web or CLI, Owner contains <Configured
through local management>
If sFlow is currently configured through SNMP, Owner contains a string identifying the
sFlow receiver.
If sFlow is configured through SNMP, all controls – except for the Release button are
diesabled to avoid inadvertent reconfiguration. The button allows for releasing the
current owner and disable sFlow sampling. The button is disabled if sFlow is currently
uclaimed. If configured through SNMP, the release must be confirmed (a confirmation
request will appear).
IP Address/Host name
The IP address or hostname of the sFlow reciever. 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 1488
bytes with default being 1400 bytes.
Port Configuration
Port
The port nmber for which the configuration below applies.
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 Samper 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 Enabled specifies the interval in second between counter poller samples.
STMP Configuration
This function is used to set an Alarm trap. When the switch receives an alarm it will use the STMP server to send an Alarm
email to the designated email address.
To configure the SMTP Alarm configuration in the web interface:
Click Configuration / SMTP Configuration
Scroll to select the Severity level
Specify the parameters in each blank field
Click Apply and click the Save icon in the upper right corner to save the settings or click Reset to cancel. The
Form will return to the previously saved setting.