Configuring for Network Management Applications

Using SNMP Tools To Manage the Switch

Configuring sFlow

The following sFlow commands allow you to configure sFlow instances via the CLI.

Syntax: [no] sflow <receiver-instance> destination <ip-address>[udp-port-num]

Enables an sFlow receiver/destination. The receiver-instance number must be a 1, 2, or 3. By default, the udp destination port number is 6343.

To disable an sFlow receiver/destination, enter no sflow <receiver-instance>.Syntax: sflow <receiver-instance> sampling <port-list> <sampling rate>

Once an sFlow receiver/destination has been enabled, this command enables flow sampling for that instance. The receiver-instance number is 1, 2, or 3, and the sampling rate is the allowable non-zero skipcount for the specified port or ports.

To disable flow-sampling for the specified port-list, repeat the above command with a sampling rate of “0”.

Syntax: sflow <receiver-instance> polling <port-list> <polling interval>

 

Once an sFlow receiver/destination has been enabled, this command enables counter

 

polling for that instance. The receiver-instance number is 1, 2, or 3, and the polling

 

interval may be set to an allowable non-zero value to enable polling on the specified

 

port or ports.

 

To disable counter-polling for the specified port-list, repeat the above command with

 

a polling interval of “0”.

 

 

 

N o t e

 

Under the multiple instance implementation, sFlow can be configured via the

 

 

CLI or via SNMP. However, CLI-owned sFlow configurations cannot be modi­

 

 

fied via SNMP, whereas SNMP-owned instances can be disabled via the CLI

 

 

using the no sflow <receiver-instance>command.

 

 

Viewing sFlow Configuration and Status

 

 

 

 

The following sFlow commands allow you to display sFlow configuration and

 

 

status via the CLI.
Syntax: show sflow agent

Displays sFlow agent information. The agent address is normally the ip address of the first vlan configured.

Syntax: show sflow <receiver instance> destination

Displays information about the management station to which the sFlow sampling- polling data is sent.

Syntax: show sflow <receiver instance> sampling-polling <port-list/range>Displays status information about sFlow sampling and polling.

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