Chapter 30 sFlow

 

Table 93 Advanced Application > sFlow (continued)

 

LABEL

DESCRIPTION

 

Sample-rate

Enter a number (N) from 256 to 65535. The Switch captures every one

 

 

out of N packets for this port and creates sFlow datagram.

 

 

 

 

poll-interval

Specify a time interval (from 20 to 120 in seconds) the Switch waits

 

 

before sending the sFlow datagram and packet counters for this port to

 

 

the collector.

 

 

 

 

Collector

Enter the IP address of the sFlow collector.

 

Address

 

 

 

Note: You must have the sFlow collector already configured in the

 

 

sFlow > Collector screen. The sFlow collector does not need

 

 

to be in the same subnet as the Switch, but it must be

 

 

accessible from the Switch.

 

 

Note: Configure UDP port 6343 (the default) on a NAT router to allow

 

 

port forwarding if the collector is behind a NAT router.

 

 

Configure a firewall rule for UDP port 6343 (the default) to

 

 

allow incoming traffic if the collector is behind a firewall.

 

 

 

 

Apply

Click Apply to save your changes to the Switch’s run-time memory. The

 

 

Switch loses these changes if it is turned off or loses power, so use the

 

 

Save link on the top navigation panel to save your changes to the non-

 

 

volatile memory when you are done configuring.

 

 

 

 

Cancel

Click Cancel to begin configuring this screen afresh.

 

 

 

30.2.1 sFlow Collector Configuration

Click the Collector link in the sFlow screen to display the screen as shown. You can configure up to four sFlow collectors in this screen. You may want to configure more than one collector if the traffic load to be monitored is more than one collector can manage.

Figure 142 Advanced Application > sFlow > Collector

 

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