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xStack DGS-3600 Series Layer 3 Gigabit Ethernet Managed Switch CLI Manual
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SFLOW
sFlow is a feature for the xStack DGS-3600 Series 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.
One 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.
The sFlow commands in the Command Line Interface (CLI) are listed (along with the appropriate parameters) in the following table.
Command Parameters
enable sflow
disable sflow
create sflow analyzer_server
<value 1-4> owner <name 16> {timeout <sec 1-2000000 |
collectoraddress <ipaddr> | collectorPort <udp_port_number 1-65535>
| maxdatagramsize <value 300-1400>}
config sflow analyzer_server
<value 1-4> {timeout <sec 1-2000000 | collectoraddress <ipaddr> |
collectorPort <udp_port_number 1-65535> | maxdatagramsize <value
300-1400>
delete sflow analyzer_server <value 1-4>
show sflow analyzer_server
create sflow counter_poller ports
[<portlist> | all] analyzer_server_id <value 1-4> {internal [disable | <sec
20-120>]}
config sflow counter_poller ports [<portlist> | all] interval [disable | <sec 20-120>]
delete sflow counter_poller ports [<portlist> | all]
show sflow counter_poller
create sflow flow_sampler ports
[<portlist> | all] analyzer_server_id <value 1-4> {rate <value 0-65535>
| maxheadersize <value 18-256>
config sflow flow_sampler ports
[<portlist> | all] {rate <value 0-65535> | maxheadersize <value 18-
256>
delete sflow flow_sampler ports [<portlist> | all]
show sflow flow_sampler
show sflow
Each command is listed, in detail, in the following sections.