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CLI-based Configuration Guide - Basic Configuration

AR100, AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V200R010

This document provides the basic concepts, configuration procedures, and configuration examples in different application scenarios of the Basic configuration supported by the device.
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Auto-Config Fundamentals

Auto-Config Fundamentals

In Figure 2-1, Auto-Config runs on Router A, Router B, Router C, and Router D. These devices function as DHCP clients and periodically send DHCP Request packets to the DHCP server to obtain configuration. The DHCP server responds with DHCP Reply packets that contain information about IP addresses assigned to devices to be configured, the IP address of the file server, the file server login method, and configuration of version files (the configuration of version files can be obtained through the intermediate file. The intermediate file must be configured in advance and saved on the file server). After receiving the DHCP Reply packets, devices obtain version files from the file server and automatically load version files after restarting.
Figure 2-1  Auto-Config networking diagram


  • DHCP server: When Auto-Config starts running on devices, these devices function as DHCP clients to send DHCP Request packets to the DHCP server for network configuration. The dynamic IP address pool, egress gateway address, and Option Parameters need to be configured on the DHCP server. The dynamic IP address pool assigns IP addresses to interfaces on devices. Option parameters contain information about the IP address of the file server, and the name of the version file to be loaded.
  • DHCP relay: If the device to be configured is on a different network segment than the DHCP server, DHCP relay needs to be configured to allow packet exchange between the device and the DHCP server.
  • File server: It is an FTP, TFTP, or SFTP server. Version files are saved on the file server. Version files include configuration files, system software, and patch files to be loaded through Auto-Config. After receiving the IP address of the file server sent from the DHCP server, devices to be configured obtain version files from the file server and set the files as the version files for the next startup.
  • Intermediate file: If Option 67 that contains information about the configuration file is not configured on the DHCP server, Auto-Config enables devices to obtain information about version files that need to be downloaded by parsing the intermediate file. Intermediate File is saved on the file server and contains information about mappings from system MAC address or ESN to the system software name, system software version, patch file name, and configuration file name.
Updated: 2019-08-08

Document ID: EDOC1100034066

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