I’ve just finished watching this fantastic video from Geoff Huston at RIPE 65. Geoff is talking clearly, honestly and directly about how stupid implementing QOS is. Simply put:
- QOS doesn’t fix anything, the damage just gets moved.
- The amount of investment in deploying QOS is far more expensive than buying more bandwidth.
- The carriers are attempts to use regulation by government bodies to earn more revenue for no extra service.
I agree with most everything Geoff since he is talking to service providers. There is no way that service providers can deliver QOS in networks today, they are too complex, and the management systems are not able to cope.
Take the time to watch it if you can. I highly recommend it (although Ivan Pepelnjak wasn’t so agreeable to it)
Note: Geoff Huston is a well known Internet figure who has the history to make these sorts of claims.