🚀 go-pugleaf

Kimmy Chan wrote:

> Hi,
>
>     My company's business is highly dependent on network service for
> both internal LAN access and external data feeds. Currently, we don't
> have any redundancy build in any network path to backup the system and
> we are planning to do so. We are using Cisco products (switches, routers
> etc) and some network vendors proposed Fast Ether Channel with spanning
> tree protocol to provide alternate network path. However, our concern is
> the spanning tree protocol which incurs a switch-over time (vary from
> 5sec to 50sec) that will make all connected IP sessions disconnect and
> they need to be established again. Any other better methods avoid the
> session disconnect?
>
> Any comment and suggestion is welcome.
>

You may want to explore some load-sharing network-and-port translation
architectures, such as
ftp://ftp.iepg.org/internet-drafts/draft-srisuresh-lsnat-02.txt.   Also go
to the www.nanog.org home page and find Ed Kern's presentation in the
Albuquerque meeting notes.

Without knowing more about the application, it's hard to suggest
solutions.  Multihoming is a complex topic, and the first requirement is to
define the problem.  Your best solution may not be routing based, but
involve DNS, NAT, etc.  See
ftp://ftp.iepg.org/internet-drafts/draft-berkowitz-multirqmt-01.txt