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Date: Tue, 7 May 1996 20:40:46 -0400
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To: freebsd-isp@freebsd.org
From: dennis@etinc.com (dennis)
Subject: High Speed Load Balancing
Cc: hackers@freebsd.org, linuxisp@lightning.com
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Emerging Technologies announces the availability of multi-line load
balancing features for it sychronous adapters for FreeBSD, Linux and
BSD/OS. The new feature allows up to 8 lines or frame relay DLCIs to
be "bundled" together in load balancing or fallback/backup configurations.

Load balanced lines are bundled with a simple utility that builds stacks
of "pipes" which are automatically balanced within the supplied drivers.
Synchronous lines may be balanced along with frame relay dlcis to 
create simply yet powerful multi-path redundant networks. Individual
lines or DLCIs can also be designated as  "fallback" only, in which case
traffic will be re-routed to those lines only if the primary pipe is out of 
service.

The software also supports "directed" load-balancing, which allows 
administrators to target traffic from specifc sources to a specific pipe.
As an example, an installation with 2 T1 lines could have all of its
dial-up traffic routed to one T1 and all local and serial line traffic
routed to the other. This can be used to create priority pipes or simply
to assign bandwidth on a source by source basis.

The next release will allow specific types of traffic to be routed to a
particular pipe, such as WEB and FTP traffic to one pipe and TELNET and
domain traffic to another.

Information about these new features is available at www.etinc.com.