switch for channel bonding

Justin Moore jdm2d at cs.virginia.edu
Thu Aug 17 17:20:31 PDT 2000

If by "channel bonding" you mean combining several NICs in the same host
into a single I/O channel to the "outside world", then I don't think there
are any that do this.  Channel bonding as referred to in the Beowulf
community involves using some of Don Becker's patches to kernel net
modules to get this behavior.

Some switches support something known as "trunking", in which several
ports on the switch are combined into one logical I/O channel; i.e., if
ports 3-6 are "trunked", data coming in for that trunk can be sent on
ports 3, 4, 5 or 6.  This won't work as you probably want it to, since
each NIC (if those cards are in the same host) will just receive random
fragments of packets.  I know several 3Com switches support trunking, such
as the 3900 series.  For actual channel bonding, though, go to the Scyld
web site (http://www.scyld.com) and check out the networking pages.


Justin Moore
Assistant Centurion SysAdmin
University of Virginia
jdm2d at cs.virginia.edu

On Thu, 17 Aug 2000, David van der Spoel wrote:

> Hi,
> Is there someone that knows of a list of switches that support channel
> bonding?
> Groeten, David.
> ________________________________________________________________________
> Dr. David van der Spoel		Biomedical center, Dept. of Biochemistry
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