[120429] in North American Network Operators' Group
RE: Routing to multiple uplinks
daemon@ATHENA.MIT.EDU (Ivan Pepelnjak)
Sun Dec 20 08:06:22 2009
From: "Ivan Pepelnjak" <ip@ioshints.info>
To: "'Rodrick Brown'" <rodrick.brown@gmail.com>,
"'Steven King'" <sking@kingrst.com>
In-Reply-To: <bb075cdf0912191148t144d626ct1b0665d9df6a2be5@mail.gmail.com>
Date: Sun, 20 Dec 2009 14:05:11 +0100
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Am I right in assuming that you're establishing application-layer =
sessions to two hosts with two different IP addresses (outside of your =
control) which provide (close to) identical services? If so, there's not =
much you can do outside of the application itself (at least if you want =
a semi-robust solution).
You could try (reverse) load balancer, but even then the application =
session would have to be disconnected before being switched over to the =
other host.
> As stated before Path A and Path B are two distinct paths they do =
however
> provide identical services but application state is not preserved. A =
new
> session and state must be established if a user decides to switch =
between
> paths.
Ivan Pepelnjak
blog.ioshints.info / www.ioshints.info
