14 Sep 08 Extending tc and iproute2. Linux routing split access multiple uplinks multiple isps iptables masquerading

It’s been a while since I last posted here, so I thought I’d post a followup article to http://www.adamsinfo.com/bandwith-limiting-with-linux-tc-and-iproute2/ which focused on bandwidth limiting in a datacenter environment using tc and iproute2.

I’ve taken the same script but tweaked IPs and bandwith values into my office. Previously I was on a 24mbit down 2.5mbit up DSL connection courtesy of www.bethere.co.uk The office is only about 800m from the closest exchange which is quite nice – I generally find I get 18+mbit down and 1.5+mbit up. Not only great bandwidth, but latency is also very small and responsiveness is great, especially as a regular [constant] SSH use. Recently, despite having no business justification whatsoever, I ordered the same again for the same office. This one clocks in at about 19mbit up and 1.7mbit down – even better! Some ISPs support line bonding – I dont believe that many in the UK do, and seeing as at the time of writing, bethere were the only ISP to support anywhere close to 24mbit, I wasn’t going to try and find another.
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Tags: Extending tc and iproute2, faster torrent, iproute2, iptables, Linux routing, masquerading, multiple isps, multiple uplinks, Routerboard load balancing, split access, tc, torrent