# sFlow

### 1. Summary

This page is for configuring sFlow settings.

This unit operates as a sFlow agent.

You need to prepare a sFlow collector separately.

### 2. Top page

This is the top page for the sFlow.

#### 2.1. System settings

- Displays the sFlow settings for the entire system.

- The table items are explained below.

  - sFlow function

    - Displays whether to enable or disable the sFlow function for the entire system.

  - IP address of agent

    - Displays the IP address of sFlow agent.

  - IP address of collector

    - Displays the IP address of sFlow collector.

  - Port of collector

    - Displays the UDP port number of sFlow collector.

  - Maximum datagram size

    - Displays the maximum datagram size sent from sFlow agent to sFlow collector.

- Press the "Setting" button to display the page for configuring the system.

#### 2.2. Interface settings

- Displays the sFlow settings for the interface.

- The table items are explained below.

  - Port

    - Displays the interface name.

  - Packet flow sampling

    - Displays sampling rate for packet flow sampling at the target interface.

  - Counter sampling

    - Displays polling interval for counter sampling at the target interface.

- Press the "Setting" button to display the page for configuring the selected interface.

- Press the "Specify all" button to configure the settings for all interfaces with the check box selected.

- Press the "Return to defaults" button to initialize the settings for all interfaces with the check box selected.

### 3. System settings page

This page is for configuring the sFlow settings for the system.
Enter the settings, and then press the "Confirm" button.
If there are no mistakes in the input content of the confirmation screen, press the "OK" button.

#### 3.1. System settings

- sFlow function

  - Specify whether to enable or disable the sFlow function for the entire system.

- IP address of agent

  - Set the IP address of sFlow agent.

  - It is used for sFlow header of sFlow datagram.

  - IPv6 address cannot be specified when the stack function is enabled.

- IP address of collector

  - Set the IP address of sFlow collector.

  - IPv6 address cannot be specified when the stack function is enabled.

  - The following IPv4 addresses cannot be specified.

    - All 0 (0.0.0.0)

    - Loopback (127.0.0.1)

    - Multicast (224.0.0.0 - 239.255.255.255)

    - class E (240.0.0.0 - 255.255.255.255)

  - The following IPv6 addresses cannot be specified.

    - All 0 (::0)

    - Loopback (::1)

    - Multicast (FF00::)

- Port of collector

  - Set the UDP port number of sFlow collector.

- Maximum datagram size

  - Set the maximum datagram size sent from sFlow agent to sFlow collector.

### 4. Interface settings page

This page is for configuring the sFlow settings for the interface.
Enter the settings, and then press the "Confirm" button.
If there are no mistakes in the input content of the confirmation screen, press the "OK" button.

#### 4.1. Interface settings

- Port

  - Displays the port name to configure the settings.

- Packet flow sampling

  - Select from the following packet flow sampling operations.

    - Disable

    - Enable

  - Sampling rate

    - Specify how many packets you want to take sample statistics for each by packet flow sampling.

    - Set the appropriate value, paying attention to the following.

      - If you set the value too small, CPU load will be high.

      - The more you increase ports with packet flow sampling enabled, the more CPU load increases.

      - High CPU load might affect precision of information because the unprocessed sampling contents will be discarded.

  - Maximum header size

    - Specify the maximum header size of Ethernet frames to be sampled by packet flow sampling.

- Counter sampling

  - Select from the following counter sampling operations.

    - Disable

    - Enable

  - Polling interval

    - Specify how many seconds you want to take sample statistics for each by counter sampling.

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