top of page

Configure Linux for Non-ARP UDP Communication with an Embedded Target



Tux

This post answers, "How do I configure Linux Linux for Non-ARP UDP Communication with an Embedded Target?"


Introduction


Learn to configure a Linux system to connect with an embedded target that lacks ARP over UDP support. This guide simplifies the process for seamless communication.


Prerequisites

  • Linux system access with 'sudo' privileges.

Configuration Overview

  • Target IP: 172.16.30.1, MAC: 5e:ea:50:05:1a:b5

  • Host IP: 172.16.30.2, MAC: 5e:e0:06:50:05:ee

Quick Setup Steps

  1. Hardware Connection Connect the Linux host and embedded target using an Ethernet cable.

  2. Power On Activate the embedded target.

  3. Identify [interface] Open terminal, run ifconfig, and note the Ethernet interface (e.g., ens33).

  4. Configure MAC Address

    • Disable interface: sudo ifconfig [interface] down

    • Set MAC address: sudo ifconfig [interface] hw ether 5e:e0:06:50:05:ee

    • Enable interface: sudo ifconfig [interface] up


  1. Assign IP Address: Assign IP via terminal: sudo ifconfig [interface] 172.16.30.2 netmask 255.255.255.0

  2. Update ARP Table: Add static ARP entry: sudo arp -i [interface] -s 172.16.30.1 5e:ea:50:05:1a:b5

  3. Verify Configuration Check ARP mapping with arp -a.

Conclusion With these steps, your Linux system will be ready to interface with an embedded target that doesn't support ARP over UDP, ensuring smooth communication and operation.


Additional Info On ARP


The ARP table facilitates the translation between IP addresses and MAC addresses for local network communication. The table is accessed whenever a device needs to establish a direct communication link with another device on the same local network.


References

Comments


bottom of page