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Configuring Port Breakout

The Port Breakout feature allows high-speed ports to be split into multiple lower-speed ports on supported platforms through interface configuration. This enables flexibility in network deployments by adapting port speeds to specific requirements.

Supported Platforms for Port Breakout:

  • EC7816

  • EC7726

  • EC7326

  • SN4600C

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Supported Breakout Configurations

For example, a 100G port can be split into:

  • 4x 25G ports

  • 2x 50G ports (only supported on NVIDIA platforms)

  • 4x 10G ports (if supported)

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Checking the Current Breakout Mode

To view the current breakout mode for an interface, use:

pbnoscli# show interface breakout current-mode Ethernet49/1
======================================
Interface       Breakout
======================================
Ethernet49/1    1x100G[40G]

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Viewing Available Breakout Modes

Before changing the breakout configuration, check the supported breakout modes using:

From the above output, the platform supports four breakout modes for Ethernet49/1:

  • 1x100G

  • 2x50G

  • 4x25G

  • 4x10G

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Note:

  • Ensure there are no interface-dependent configurations before applying a breakout change.

  • A system reboot is required after configuring port breakout.

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Configuring Port Breakout

To change the breakout mode to 4x25G, use the following command:

After the system reboots, verify the new breakout configuration using:

Now if we want to change breakout mode from "4x25G" to "2x50G" then we can do it using below commands

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