RE: bad idea?

["Dmitri Krioukov" <dima () dimension net>]

the major disadvantage of the foundry (bgp)
solution is longer prefix injection.

the major problem with the dns-based solutions is
that they're not topology-aware (-> suboptimal
routing). attempts to make dns smart lead to
rather awkward reverse pinging configurations
and proprietary protocols running between load
balancers. (there was also rfc2052 by paul vixie
but it required modification of dns clients.)

there is also the "triangle data flow" solution,
which is broken by cef...

i'm in the process of preparing an overview
of the available techniques along with introduction
of a new one, which solves a lot of headaches.
it requires a feature set that is not available
on any of the currently existing lb platforms,
hence, for testing, i had to develop one using
open source (i chose linux to make it fast (it
had almost all bits in place -- check
http://www.linuxvirtualserver.org/)).
--
dima.

> -----Original Message-----
> From: owner-nanog () merit edu [mailto:owner-nanog () merit edu]On Behalf Of
> tony bourke
> Sent: Wednesday, July 05, 2000 2:11 PM
> To: Jeremiah Kristal
> Cc: nanog () merit edu
> Subject: Re: bad idea?
>
>
>
> actually, Foundry has a global solution based on BGP, check them out.
>
> There is a load-balancing mailing list, which addresses such issues.
>
> http://vegan.net/lb is the info to sign up.
>
> Tony
>
> On
> Wed, 5 Jul 2000, Jeremiah Kristal wrote:
>
> > Given a small, globally routable netblock to be used for front-end web
> > servers, and a strong aversion for using DNS for any type of load
> > balancing, would it be reasonable to build two identical servers farms
> > with the same public IP addresses and rely on the BGP sessions with the
> > hosing providers to remove one advertisement in the event of a problem?
> > I've been looking at ways to ensure that the webservers are always
> > available, short of building a network connecting hosting facilities.
> >
> > Jeremiah
> > being a customer stinks
>
> -------------- -- ---- ---- --- - - - -  -  -- -  -  -  -   -     -
> Tony Bourke                           tony () vegan net