[j-nsp] network engineering

[Mark Tinka]

On Friday 06 February 2009 05:09:30 pm Matthias Gelbhardt 
wrote:

> We have asymmetric routing in several cases. I would like
> to know, how you would deal against that?

The moment you're multi-homed to the Internet, asymmetric 
routing is a fact of life; and it's not really a bad thing.

How traffic leaves or enters a network is a function of best 
path dynamics vs. cost and bandwidth available. And this 
goes for both your network and the others on the Internet 
(including your upstreams/peers).

Maximizing capacity and cost efficiency is an on-going 
exercise for any network engineer running a BGP network. The 
individual dynamics usually vary from network to network.

Monitoring flows is a good way to find out how best to 
engineer your traffic.

Cheers,

Mark.
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