Sflow Agent Address Assignment; Example: Sflow Technology Configuration; Series Switches - Juniper JUNOS OS 10.4 - FOR EX REV 1 Manual

Related
Documentation

Example: sFlow Technology Configuration

Example: Configuring sFlow Technology to Monitor Network Traffic on EX Series Switches
Copyright © 2010, Juniper Networks, Inc.
NOTE: sFlow technology on EX Series switches does not support graceful
restart. When a graceful restart occurs, the adaptive sampling rate is set to
the user-configured sampling rate.

sFlow Agent Address Assignment

The sFlow collector uses the sFlow agent's IP address to determine the source of the
sFlow data. You can configure the IP address of the sFlow agent to ensure that the agent
ID for the sFlow agent remains constant. If you do not specify the IP address to be assigned
to the agent, the IP address assigned to the agent is based on the following order of
priority of interfaces configured on the switch:
1. Virtual management Ethernet (VME) interface
2. Management Ethernet interface
If neither of the preceding interfaces has been configured, the IP address of any Layer 3
interface or the routed VLAN interface (RVI) is used as the IP address for the agent. At
least one interface must be configured on the switch for an IP address to be automatically
assigned to the agent. When the agent IP address is assigned automatically, the IP
address is dynamic and changes when the switch reboots.
sFlow data can be used to provide network traffic visibility information. You can explicitly
configure the IP address to be assigned to source data (sFlow datagrams). If you do not
explicitly configure that address, the IP address of the configured Gigabit Ethernet
interface, 10-Gigabit Ethernet interface, or the routed VLAN interface (RVI) is used as
the source IP address.
Example: Configuring sFlow Technology to Monitor Network Traffic on EX Series
Switches on page 3873
Configuring sFlow Technology for Network Monitoring (CLI Procedure) on page 3878
Monitoring Interface Status and Traffic on page 1345
Example: Configuring sFlow Technology to Monitor Network Traffic on EX Series
Switches on page 3873
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. You can specify sample rates for ingress and egress packets. sFlow data
can be used to provide network traffic visibility information.
This example describes how to configure and use sFlow technology to monitor network
traffic. Junos OS fully supports the sFlow standard described in RFC 3176, InMon
Chapter 139: sFlow Monitoring Technology
3873