DHCP RELAY over L2TPv3: Difference between revisions

Revision as of 22:31, 22 March 2022

Main Page > General Information > Configuration Examples > Use cases > DHCP RELAY over L2TPv3

Introduction

A DHCP relay agent allows the DHCP clients to obtain IP addresses from a DHCP server that is not configured on the same LAN.

This article provides a configuration example with details on how to set-up a DHCP relay over a L2TPv3 VPN.

Prerequisites

You will need:

Two RUT or RUTX devices (one as Server and other as Client)
A PC acting as a Host for testing
Both routers must have a Public Static or Public Dynamic IP addresses

Configuration Scheme

I will paste a Topology Image here

DHCP Server Settings

DHCP Pool

Enter the router's WebUI, go to Network > Interfaces > Ethernet LAN and click the 'Edit' button on the right side of the interface to set the LAN network address.

Under DHCP SERVER set parameters for the DHCP pool.

Set up Mobile WAN as Main WAN

Enter to the router’s WebUI, go to Network > Interfaces press mouse click on the Mobile Wan interface, then drag it to the 1^st position and then press Save & Apply.

@@ Line 19: / Line 19: @@
 Enter the router's WebUI, go to '''Network > Interfaces > Ethernet LAN''' and click the '''<nowiki/>'Edit'''' button on the right side of the interface to set the LAN network address.
 [[File:Server a.png|center|thumb|464x464px|LAN network for DHCP server]]Under '''DHCP SERVER''' set parameters for the DHCP pool.
-[[File:Server new 02.png|alt=DHCP poll parameters|center|thumb|464x464px|DHCP pool parameters]]
+[[File:Server new 02.png|alt=DHCP poll parameters|center|thumb|464x464px|DHCP pool parameters|border]]
 === Set up Mobile WAN as Main WAN ===
 Enter to the router’s WebUI, go to '''Network > Interfaces''' press mouse click on the Mobile Wan interface, then drag it to the 1<sup>st</sup> position and then press '''Save & Apply'''.