This is a fairly common configuration. Well, I don't know about 3, but definitely 2 routers. It gives you redundancy, allows you to perform in place hardware and software upgrades, etc.
Another common design is multiple switches and routers at a site. On the "lan" side there are 2 switches, crosslinked to two routers. The routers run vrrp between them - boom, instant first hop redundancy. On the "wan side" you've got two switches with crosslinks and ospf between the routers. On Nov 9, 2016 5:17 PM, "Christopher Gray" <cg...@graytechsoftware.com> wrote: > Early in my network design, I decided to have multiple routers at each POP > (normally 3 MikroTiks in a triangle configuration, using RB750UP where > power was needed). The goal was to improve reliability by having critical > links come into different routers, allowing site access if any router > actually failed. The system is setup with OSPF and MPLS routing between > them. I only ever installed 3 routers at one location, though (other site > have only 1 or 2 MikroTik routers). > > It has been 2 years now, and everything has worked great at the 1, 2, and > 3 router sites. The use of the RB750UP routers has allowed for remote > rebooting when necessary, and I have not had a single router failure. I'm > working on a revision to the design, and I'd like to know if anyone else > intentionally runs multiple routers like this. Any practical benefits to > running multiple PoE routers vs running a single router and a single PoE > switch? >
