Implementing a Multiple ISP Configuration Using VRFs & MP-BGP
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There are a few different ways you can implement provider redundancy in your network. You could terminate all ISPs into a single router using traditional ip sla + track. You could terminate the ISP connections on different routers, or even have a router per ISP – a 1:1 ISP to router ratio. The last method would most likely become cumbersome though if you grew beyond dual ISPs.
My personal favorite is to split the provider connections between 2 routers. If you only have 1 ISP per router, this video may not be for you; if you end up with more than one ISP on a single router, you might find this helpful.
0:00 – Introduction
0:42 – Topology Overview
2:52 – Configuration Objectives
3:55 – VRF and Interface Configuration
12:02 – MP-BGP Configuration/Route Leaking
19:29 – IP SLA, Track and Default Route Overview/Configuration
34:16 – NAT Configuration
36:42 – Testing