Configuring Sflow Technology For Network Monitoring (Cli Procedure) - Juniper EX9200 Features Manual

Network Management and Monitoring Feature Guide for EX9200 Switches

Configuring sFlow Technology for Network Monitoring (CLI Procedure)

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Configuring sFlow Technology for Network Monitoring (CLI Procedure) on page 26
Monitoring Interface Status and Traffic
sFlow technology is a network monitoring technology for high-speed switched or routed
networks. It is a technology that is based on statistical sampling. You can configure sFlow
technology 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.
To configure sFlow features:
Configure the IP address and the UDP port of the collector:
1.
[edit protocols]
user@switch# set sflow collector
The default UDP port is 6343,
Enable sFlow technology on a specific interface:
2.
[edit protocols sflow]
user@switch# set interfaces
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 in seconds how often the sFlow agent polls interfaces:
3.
[edit protocols sflow]
user@switch# set polling-interval
NOTE: 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
4.
or an ingress sampling rate, or both.
NOTE: We recommend that you configure the same sampling rates on
all the ports on a line card. If you configure different sampling rates on
different ports, the lowest value is used for all ports. You could still
configure different rates on different line cards.
To specify an egress sampling rate:
[edit protocols sflow]
user@switch# set sample-rate
ip4/ipv6-address udp-port
interface-name
seconds
egress number
Copyright © 2016, Juniper Networks, Inc.
port-number