xStack
®
DGS-3600 Series Layer 3 Managed Gigabit Ethernet Switch
sFlow
sFlow is a feature on the Switch that allows users to
monitor network traffic running through the switch
to identify network problems through packet
sampling and packet counter information of the
Switch. The Switch itself is the sFlow agent where
packet data is retrieved and sent to an sFlow
Analyzer where it can be scrutinized and utilized to
resolve the problem.
The Switch can configure the settings for the sFlow
Analyzer but the remote sFlow Analyzer device must
have an sFlow utility running on it to retrieve and
analyze the data it receives from the sFlow agent.
The Switch itself will collect three types of packet
data:
1.
It will take sample packets from the normal
running traffic of the Switch based on a
sampling interval configured by the user.
2.
The Switch will take a poll of the IF
counters located on the switch.
3.
The Switch will also take a part of the
packet header. The length of the packet
header can also be determined by the user.
Once this information has been gathered by the
switch, it is packaged into a packet called an sFlow
datagram, which is then sent to the sFlow Analyzer
for analysis.
For a better understanding of the sFlow feature of
this Switch, refer to the adjacent diagram.
Figure 2- 81. sFlow Basic Setup
sFlow Global Settings
The following window is used to globally enable the sFlow feature for the Switch. Simply use the pull-down menu and click
Apply
to enable or disable sFlow. This window will also display the sFlow version currently being utilized by the Switch, along
with the sFlow Address that is the Switch’s IP address.
To view this window, click
Administration > sFlow > sFlow Global Settings
, as shown below:
Figure 2- 82. sFlow Global Settings window
The following fields are displayed:
Parameter Description
73
