sFlow

Configuring the sFlow agent

The following example enables sFlow on the system and configures the system sampling rate and sample size. Note that the sample size and polling interval are not configurable. The following default sample size applies:

• 7220 IXR-D2, D3, D4, D5, and 7220 IXR-H systems: 256 bytes

• 7250 IXR 6/10: 220 bytes

--{ * candidate shared }--[  ]--
    system {
        sflow {
            admin-state enable
            }
        }
    }

Configuring sFlow collectors

The following example configures two sFlow collectors. The IP address for each collector is configured, as well as its network instance and source IP address. Each collector receives all samples. The collector DSCP value for flow samples is also configured (applicable only on 7250 IXR systems). If no value is specified, the default DSCP value of 0 applies.

--{ * candidate shared }--[  ]--
#info system sflow
    system {
        sflow {
            dscp 14
            collector 1 {
                collector-address 10.50.4.1
                source-address 192.0.2.1
                network-instance default
            }
            collector 2 {
                collector-address 10.50.4.2
                source-address 10.1.5.2
                network-instance default
                port 4310
            }
        }
    }

Configuring sFlow for an interface

The following example enables sFlow on an interface.

--{ * candidate shared }--[  ]--
    interface ethernet-1/1 {
        sflow {
            admin-state enable
        }
    }

Info from state command

# info from state system sflow
    system {
        sflow {
            admin-state enable
            sample-rate 1000
            sample-size 256
            collector 1 {
                collector-address 10.1.1.24
                network-instance default
                source-address 10.0.0.1
                port 6343
                next-hop 172.24.71.65
            }
            statistics {
                total-samples-taken 5457
                total-sent-packets 26800
            }
        }
    }

Show system sflow status command

--{ running }--[  ]--
# enter show
# show system sflow status
-------------------------------------
Admin State            : enable
Sample Rate            : 10000
Sample Size            : 256
DSCP                   : 0
Total Samples          : 0
Total Collector Packets: 3269158
-------------------------------------
collector-id     : 8
collector-address: 172.10.10.10
network-instance : default
source-address   : 10.0.0.1
port             : 6343
next-hop         : 172.24.71.65
-------------------------------------