Re: network enhancement

Larry McVoy (lm@who.net)
Fri, 13 Mar 1998 17:11:04 -0800

I believe what mark is talking about sounds a lot like the Sun Sparc
Cluster I, a product I designed and built back in 1992. It was an
NFS server that used a switch to be able to talk to lots and lots of
different IP subnets without going through a router. The hack I put
into the swith is what is now known as "VLANS".

I believe there are some papers about it on my old home page at

http://reality.sgi.com/lm

I don't have Mark's address, if someone who does could pass this on, I'd
appreciate it.

--lm

: sun already sells a multi port card that supports trunking i.e. you can
: combine 4 100baseT cards for 800mbs fullduplex operation but I don't think
: linux is able to do such a thing yet.... it would be nice though.
:
: --Jauder
:
: On Thu, 12 Mar 1998, Mark Spencer wrote:
:
: > <LONG VERSION>
: > Dunno if this can already be done, but this would be cool to do...
: > Imagine if you will a real life scenerio I saw at a company today: Lots
: > of machines on one IP subnet all trying to connect to a single server.
: > The server is on a switch, and the switches are themselves hooked
: > together. Wouldn't it be neat if:
: >
: > You could put say 5 ethernet cards in the server and put one ether card on
: > each of the switches such that the server still has one IP address, but
: > does ARP on all the interfaces in such a way that it can talk to each
: > machine on the switch it belongs to...
: >
: > It is, in a sense, an extension of the bridging concept: broadcasts can
: > go out on one interface (the switches will take care of the rest) but
: > other packets should go out on the interface which is on the same switch
: > as the arp that you want to get to...
: > </LONG VERSION>
: >
: > <CONSISE>
: > The idea would be that if multiple ethernet's share the same IP address
: > that it properly arp's depending upon which interface an incoming request
: > came on and sent arp requests on all interfaces with the shared IP.
: > </CONSISE>
: >
: >
: > Can it already be done? Is it worth doing?
: >
: > -Mark
: >
: >
: > -
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: >
:
:
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