Border Router – Deployment Guide - vRouter 2.1
1. Overview
The purpose of this document is to guide the user in deploying the vRouter for a Border
Router use case. It focuses on the concepts that are relevant to this specific use case, in
order to provide a practical example. Exhaustive documentation of the vRouter features that
are not covered in the use case can be found in the standard vRouter documentation.
2. Installation and basic configuration
Follow the Getting Started guide to install the software in your environment and get a remote
console with SSH.
3. Use case: dual multi-homed BGP peering
3.1. Overview
The following diagram depicts a fairly common use case where a border router provides
connectivity to the Internet via several Peering and Transit Service Providers.
The outside network connectivity via eBGP provides service availability using different ASes.
The inside network connectivity is established using an IGP (Internal Gateway Protocol) that
usually relies on OSPF or iBGP or a combination of both. In the described case and for
illustration purposes, we will be using iBGP and OSPFv2.
To avoid the border router being a single point of failure, we will describe how an ISP can
provide a multi-homed BGP peering with several peering and transit providers.
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