Supported Platforms
Configuring sFlow Technology for Network Monitoring (CLI Procedure)
You can configure sFlow technology, designed for monitoring high-speed switched or routed networks, to continuously monitor traffic at wire speed on all interfaces simultaneously. Junos OS fully supports the sFlow standard described in RFC 3176, InMon Corporation's sFlow: A Method for Monitoring Traffic in Switched and Routed Networks (see http://faqs.org/rfcs/rfc3176.html).`
To configure sFlow features:
- Configure the IP address and the UDP port of the collector:
- Enable sFlow technology on a specific interface:
[edit protocols sflow]
user@switch# set interfaces (sFlow Monitoring Technology) interface-name
Note: You cannot enable sFlow technology on a Layer 3 VLAN-tagged interface.
You cannot enable sFlow technology on a link aggregation group (LAG), but you can enable it on the member interfaces of a LAG.
- Specify how often the sFlow agent polls the interface:
[edit protocols sflow]
user@switch# set polling-interval secondsNote: Specify 0 if you do not want to poll the interface.
- Specify the rate at which packets must be sampled. You
can specify either an egress or an ingress qualifier, or both.
Note: The sample-rate number (the global sample rate) statement has been deprecated and might be removed from future product releases. We strongly recommend that you phase out its use.
Note: We recommend that you configure the same sample rates for both ingress and egress. If the sample rates are different, the lower value is used.
To specify an egress sample rate:
[edit protocols sflow]
user@switch# set sample-rate egress numberTo specify an ingress sample rate:
[edit protocols sflow]
user@switch# set sample-rate ingress number - To configure the polling interval and the egress and ingress
sample rates at the interface level:
[edit protocols sflow interfaces (sFlow Monitoring Technology) interface-name]
user@switch# set polling-interval seconds[edit protocols sflow interfaces (sFlow Monitoring Technology)]
user@switch# set sample-rate egress number[edit protocols sflow interfaces (sFlow Monitoring Technology)]
user@switch# set sample-rate ingress numberNote: The interface-level configuration overrides the global configuration.
- To specify an IP address to be used as the agent ID for the sFlow agent:
- To specify the source IP address to be used for sFlow datagrams:
