Merit Network
Can't find what you're looking for? Search the Mail Archives.
  About Merit   Services   Network   Resources & Support   Network Research   News   Events   Home

Discussion Communities: Merit Network Email List Archives

North American Network Operators Group

Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical

Re: Using NAT for best-exit routing

  • From: Jeff Mayzurk
  • Date: Fri Aug 28 14:12:52 1998

Brian Dickson wrote:

> such peer networks). Ingress traffic to the web farm provider has it's
> *source* address NAT'd, and internal routing points return traffic to
> the *same* NAT through which the request traffic came.
> Thus, return (data) traffic is best-exit.

> Side benefits are that the unique address pools allow for much easier
> per-peer and per-region collection of stats, eg netflow (at some place
> other than NATs).

As you point out, stats collection is easier--but only from a network ops 
point of view, and even then, only if you're simply concerned with symmetric 
flow of traffic to your upstreams/peers. 

However, your web server logs are now useless, because all the requests come 
from a static pool of local addresses. If you're a big web farm like Exodus, 
your customers aren't going to buy this.

-Jeff

-- 
Jeff Mayzurk
Manager, Systems/Network Engineering   <jeffm@eonline.com>
E! Online 
150 Chestnut Street                    415.772.3555 x4496
San Francisco, CA  94111               415.984.0322 FAX





Discussion Communities


About Merit | Services | Network | Resources & Support | Network Research
News | Events | Contact | Site Map | Merit Network Home


Merit Network, Inc.