[j-nsp] network engineering

[Justin M. Streiner]

On Fri, 6 Feb 2009, Matthias Gelbhardt wrote:

> We have asymmetric routing in several cases. I would like to know, how you 
> would deal against that? Is there a simple way to send the packets out of the 
> same interface, they are received? But on the other hand, many packets are 
> send out by us, and we do not know, where the other side is sending their 
> packets into our network.

There is a common misconception that asymmetric routing is somehow bad. 
Yes, it can make troubleshooting connectivity problems a bit more 
involved, but asymmetry is a perfectly normal condition.  Also, even if 
you were to enforce symmetry within your network, there is no guarantee 
that the path will remain symmetric once it leaves your network.

jms