[80010] in North American Network Operators' Group
Re: Slashdot: Providers Ignoring DNS TTL?
daemon@ATHENA.MIT.EDU (sthaug@nethelp.no)
Wed Apr 20 14:51:36 2005
To: patrick@ianai.net
Cc: nanog@merit.edu
From: sthaug@nethelp.no
In-Reply-To: Your message of "Wed, 20 Apr 2005 14:20:23 -0400"
Date: Wed, 20 Apr 2005 20:51:07 +0200
Errors-To: owner-nanog@merit.edu
> > But caching servers are usually setup to load balance. Usually, the
> > servers with the same IP address share an ethernet along with multiple
> > routers. So the packets are switched on essentially a per-packet
> > basis.
> > Or possibly a per-arp basis that alters the MAC-based-forwarding
> > behavior
> > of a switch. This is fairly fine grained load balancing.
>
> This is complete news to me. Of course, I do not run most of the
> caching name servers on the Internet, so what do I know. Do you?
>
> Would anyone who runs an anycast recursive name server care to supply
> data points to support or refute Mr. Anderson's assertion?
Our recursive name service, using anycast servers, is setup with 3
name servers at 3 different physical locations, with each server
connected to a router at the same physical location. Each server
handles two different anycast addresses. There is no per-packet load
balancing involved.
I can't speak for the rest of the net, of course - but our recursive
anycast service has worked well for several years.
Steinar Haug, Nethelp consulting, sthaug@nethelp.no
