sFlow configuration commands 1

display sflow·· 1

sflow agent 3

sflow collector 4

sflow counter interval 4

sflow counter collector 5

sflow flow collector 6

sflow flow max-header 6

sflow sampling-mode· 7

sflow sampling-rate· 7

sflow source· 8

 

 

 

display sflow

Syntax

Standalone mode:

display sflow [ slot slot-number ] [ | { begin | exclude | include } regular-expression ]

IRF mode:

display sflow [ chassis chassis-number slot slot-number ] [ | { begin | exclude | include } regular-expression ]

View

Any view

Default level

1: Monitor level

Parameters

slot slot-number: Displays the sFlow configuration and operation information for the interface card specified by the slot number. (Standalone mode)

chassis chassis-number slot slot-number: Displays the sFlow configuration and operation information of a card on an IRF member switch. The chassis-number argument refers to the ID of the IRF member switch. The slot-number argument refers to the number of the slot where the card resides. (IRF mode)

|: Filters command output by specifying a regular expression. For more information about regular expressions, see Fundamentals Configuration Guide.

begin: Displays the first line that matches the specified regular expression and all lines that follow.

exclude: Displays all lines that do not match the specified regular expression.

include: Displays all lines that match the specified regular expression.

regular-expression: Specifies a regular expression, a case-sensitive  string of 1 to 256 characters.

Description

Use the display sflow command to display the sFlow configuration and operation information.

Examples

# Display the sFlow configuration and operation information.

<Sysname> display sflow slot 2

sFlow Version: 5

sFlow Global Information:

Agent        IP:10.10.10.1 (Auto)

Collector Information

ID    IP                                   Port  Aging     Size   Description

1     22:2:20::10                          6343   N/A      3000    netserver

2     192.168.3.5                          6343   500      3000    Office

3                                          6343   0        1400

4                                          6343   0        1400

5                                          6343   0        1400

6                                          6343   0        1400

7                                          6343   0        1400

8                                          6343   0        1400

9                                          6343   0        1400

10                                         6343   0        1400

sFlow Port Information:

Interface  CID    Interval(s)  FID MaxHLen   Rate       Mode        Status

GE3/0/1     1     100          1   128       1000       Determine   Active

GE3/0/2     2     100          2   128       1000       Determine   Active

Table 1 Output description

 

sflow agent

Syntax

sflow agent { ip ip-address | ipv6 ipv6-address }

undo sflow agent { ip | ipv6 }

View

System view

Default level

2: System level

Parameters

ip ip-address: IPv4 address of the sFlow agent.

ipv6 ipv6-address: IPv6 address of the sFlow agent.

Description

Use the sflow agent command to configure the IP address of the sFlow agent.

Use the undo sflow agent command to remove the configured IP address.

By default, no IP address is configured for the sFlow agent. The device periodically checks the existence of sFlow agent address. If the sFlow agent has no IP address configured, the device automatically selects an interface IP address for the sFlow agent but does not save the selected IP address.

Note the following:

·           H3C recommends configuring an IP address manually for the sFlow agent.

·           Only one IP address can be specified for the sFlow agent on the switch.

Examples

# Configure the IP address of the sFlow agent.

<Sysname> system-view

[Sysname] sflow agent ip 10.10.10.1

sflow collector

Syntax

sflow collector collector-id { { ip ip-address | ipv6 ipv6-address } | datagram-size size | description text | port port-number | timeout seconds } *

undo sflow collector collector-id

View

System view

Default level

2: System level

Parameters

collector-id: ID of the sFlow collector, ranging from 1 to 10.

ip ip-address: IPv4 address of the sFlow collector.

ipv6 ipv6-address: IPv6 address of the sFlow collector.

description text: Specifies a description for the sFlow collector. The default description is "CLI Collector."

datagram-size size: Specifies the maximum length of the sFlow data portion in every sFlow packet that is sent out. The value is in the range of 200 to 3000 bytes and defaults to 1400 bytes.

port port-number: Specifies the port number of the sFlow collector, in the range of 1 to 65535. The default port number is 6343.

timeout seconds: Specifies the aging time of the sFlow collector, in the range of 60 to 2147483647, in seconds. By default, the sFlow collector is not aged out. When the aging time expires, all fields of the collector restore the default. The system does not save the configuration of collectors with the aging time specified.

Description

Use the sflow collector command to configure an sFlow collector.

Use the undo sflow collector command to remove a specified sFlow collector.

By default, the switch presets some empty collectors.

To display the information of the preset sFlow collectors, use the display sflow command.

Examples

# Specify collector 2's destination IP address as 3.3.3.1, port number as default, description as "netserver", aging time as 1200 seconds, and maximum length of the sFlow data portion as 1000 bytes.

<Sysname> system-view

[Sysname] sflow collector 2 ip 3.3.3.1 description netserver timeout 1200 datagram-size 1000

sflow counter interval

Syntax

sflow counter interval interval-time

undo sflow counter interval

View

Interface view

Default level

2: System level

Parameters

interval-time: Counter sampling interval in seconds, in the range of 2 to 86400.

Description

Use the sflow counter interval command to set the counter sampling interval.

Use the undo sflow counter interval command to disable sFlow counter sampling.

By default, counter sampling is disabled.

Examples

# Set the counter sampling interval to 120 seconds on GigabitEthernet 3/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 3/0/1

[Sysname-GigabitEthernet3/0/1] sflow counter interval 120

sflow counter collector

Syntax

sflow counter collector collector-id

undo sflow counter collector

View

Interface view

Default level

2: System level

Parameters

collector-id: ID of the sFlow collector.

Description

Use the sflow counter collector command to specify the target collector to receive the counter sampling data.

Use the undo sflow counter collector command to remove the collector for counter sampling.

By default, no collector is specified for counter sampling.

Examples

# Specify sFlow collector 2 on GigabitEthernet 3/0/1 for counter sampling.

<Sysname> system-view

[Sysname] interface gigabitethernet 3/0/1

[Sysname-GigabitEthernet3/0/1] sflow counter collector 2

sflow flow collector

Syntax

sflow flow collector collector-id

undo sflow flow collector

View

Interface view

Default level

2: System level

Parameters

collector-id: ID of the sFlow collector.

Description

Use the sflow flow collector command to specify the target collector to receive the flow sampling data.

Use the undo sflow flow collector command to remove the binding between the flow sampling and the collector.

By default, flow sampling is not bound with any collector.

Examples

# Specify sFlow collector 2 on GigabitEthernet 3/0/1 for flow sampling.

<Sysname> system-view

[Sysname] interface gigabitethernet 3/0/1

[Sysname-GigabitEthernet3/0/1] sflow flow collector 2

sflow flow max-header

Syntax

sflow flow max-header length

undo sflow flow max-header

View

Interface view

Default level

2: System level

Parameters

Length: Maximum bytes of data that can be copied from a sampled packet, in the range of 18 to 512.

Description

Use the sflow flow max-header command to set the maximum bytes of data that can be copied from a sampled packet.

Use the undo sflow flow max-header command to restore the default.

By default, up to 128 bytes of data starting from the original packet header can be copied from a sampled packet. H3C recommends using the default setting.

Examples

# Set the maximum bytes of data that can be copied form a sampled packet to 60.

<Sysname> system-view

[Sysname] interface GigabitEthernet 3/0/1

[Sysname-GigabitEthernet3/0/1] sflow flow max-header 60

sflow sampling-mode

Syntax

sflow sampling-mode { determine | random }

undo sflow sampling-mode

View

Interface view

Default level

2: System level

Parameters

determine: Sampling mode of fixed packet number. For example, with the packet sampling rate set to 4000 (by using the sflow sampling-rate command), the switch randomly samples a packet, like the tenth packet, from the first 4000 packets. The next time the switch samples the 4010th packet, and so on.

random: Random sampling mode. After the sampling rate is specified with the sflow sampling-rate command, a device samples zero, one, or multiple packets from each group of sampled packets. Generally, one packet is sampled from each group of sampled packets. For example, with the packet sampling rate set to 4000, the device may sample one packet from the first 4000 packets, two from the next 4000 packets, and none from the third 4000 packets, but generally the device samples one packet from 4000 packets. This keyword is not supported.

Description

Use the sflow sampling-mode command to specify the fixed sampling mode.

Use the undo sflow sampling-mode command to restore the default.

By default, the fixed sampling mode is used.

This command is supported on physical Ethernet interfaces only, instead of logical interfaces (VLAN interfaces) and network management interfaces.

Related commands: sflow sampling-rate.

Examples

# Configure the interface to sample a fixed number of packets.

<Sysname> system-view

[Sysname] interface gigabitethernet 3/0/1

[Sysname-GigabitEthernet3/0/1] sflow sampling-mode determine

sflow sampling-rate

Syntax

sflow sampling-rate rate

undo sflow sampling-rate

View

Interface view

Default level

2: System level

Parameters

rate: Number of packets out of which the interface will sample a packet, in the range of 512 to 1048576.

Description

Use the sflow sampling-rate command to specify the number of packets out of which the interface will sample a packet.

Use the undo sflow sampling-rate command to disable sampling.

By default, flow sampling is disabled.

This command is supported on Ethernet interfaces only, instead of logical interfaces (such as VLAN interfaces) and network management interfaces.

Related commands: sflow sampling-mode.

Examples

# Set the flow sampling rate to 4000 on GigabitEthernet 3/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 3/0/1

[Sysname-GigabitEthernet3/0/1] sflow sampling-rate 4000

sflow source

Syntax

sflow source { ip ip-address | ipv6 ipv6-address } *

undo sflow source { ip | ipv6 } *

View

System view

Default level

2: System level

Parameters

ip ip-address: Source IPv4 address of sent sFlow packets.

ipv6 ipv6-address: Source IPv6 address of sent sFlow packets.

Description

Use the sflow source command to specify the source IP address of sent sFlow packets.

Use the undo sflow source command to remove the specified source IP address.

By default, no source IP address is specified for sent sFlow packets.

Examples

# Specify the source IPv4 address of sent sFlow packets as 10.0.0.1.

<Sysname> system-view

[Sysname] sflow source ip 10.0.0.1