Ethernet Tap

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Note

This page is for the Ethernet Tap plugin. For the board, please see the “Hardware Manual”.

The Ethernet Tap is a hardware sniffer for monitoring Ethernet traffic flowing through a single Ethernet connection. The Tap passes the Ethernet traffic through with a delay equal to about 5.2uS. Use this plugin to monitor all its communications through the IO Ninja application.

Basic Setup

  1. In IO Ninja, click “New Session” and select a new “Ethernet” session.

_images/ethernet-tap-getting-started.png

  1. If not selected automatically, select your Ethernet Tap from the “Tap:” dropdown.

_images/ethernet-tap-select.png

  1. Click the “Capture” button to the right of the “Tap:” dropdown to start monitoring.

_images/ethernet-tap-capture.png

  1. Analyze the log as needed.

_images/ssh-ethernet-tap-log.png

Settings

_images/ethernet-tap-settings.png

Setting

Description

Default

Device

The Ethernet Tap that should be used.
Read parallelism
(Windows-only)

Maximum number of read requests to issue in parallel. Having more than one pending read at a time helps with increasing read throughput when incoming data arrives in rapid streams (after filling one user buffer, the kernel can immediately switch to the next one without any waiting). Increasing this number beyond 4 usually won’t yield any extra performance gains.

4

Read block size (B)

The size of each individual read block submitted to the underlying transport.

4KB

RX buffer size (B)

The full size of the incoming data (RX) buffer. Affects read throughput.

16KB

RX buffer full notifications

Toggle warnings in log about the incoming data (RX) buffer getting full.

False

View filter

Term to filter with when displaying packets.