On Sat, 2002-06-22 at 15:07, Ivan A. Beveridge wrote:
> On Sat, Jun 22, 2002 at 11:20:51AM -0700, William L. Thomson Jr. wrote:
> > With Intel cards use the e100 driver instead. Also Intel has another
> > piece of software called IANS. Intel Advanced Networking System.
> > It will allow you to use up to 8 Intel cards as one, or do load
> > balancing, and etc.Up to 8 ethernet interfaces can be grouped together.
> > It's assume.
> > 
> > I use a dual nic with a Cisco switch, and I am able to send out one
> > interface and receive in the other. Although that config relies on my
> > switch just as much as the IANS driver. Load balancing does not.
> 
> Hrm - wouldn't it be better to bond them both and use full-duplex to get 
> 200Mbps each way? Just curious :)

Using IANS I have exactly that I have one in full duplex for receiving
and one full duplex for sending. In theory I should be getting what you
mention, 200mps each way, but I since each line is send and receive I
should have 200mps send, and 200mps receive, for a total of 400mps.

IANS also works with gigabit cards as well. In fact I remember reading
or discussing with an Intel support guy that IANS can be used with other
ethernet cards as long as one in each group is an Intel card.
 
> [further stuff about e100 & IANS]
> 
> Thanks for that _very_ comprehansive help - I'll have a look at that lot :^)

No problem, I thought I would include some actual things you could use
instead of just a recommendation.

If you are using Intel cards, which I highly recommend, then IANS is a
must, if you are wanting to use more than one interface in a machine as
a single interface.

> However, I'm looking to use a dual gig card (something like a SysKonnect 
> SK-9844), with the ports bonded, and then running vlans over the resulting 
> bonded channel.

Your original post did not mention that. You mentioned a dual Intel nic.
Either way if you have one Intel nic you may still be able to achieve
what you want. IANS does support gigabit but all cards in the group must
be the same speed. No mixing 100's with 10's or 1000's. All 100's all
10's or all 1000's.

I would stick to Intel nic's. They have yet to let me down, and you can
get them retail or dirt cheap used on Ebay. Like $10 for a Pro 100
adapter (the mini ones), and gig and dual cards for between $50-$100.

You should be able to use vlans with IANS. Read the read me.

> http://www.syskonnect.com/syskonnect/products/b0101_ethernet_9844.html

I will have to look into this. But I am an Intel nic guy. Very bias. :)

> WRT channel bonding, I was using ifenslave (using redhat's ifcfg- scripts 
> and the bonding module), although I see there is an 'ethernet link 
> aggregation' (802.3ad) driver, which the syskonnect help seems to point to:
>       http://www.st.rim.or.jp/~yumo/#veth
> I've no idea what the difference is between this and bonding.

Correct me if I am wrong, but ifenslave is a tool from the Beowulf
project. I remember downloading it and trying to get it to work in my
RaQ XTR. But I could not. All the info was duplicated, IP, subnet, etc.
All looked good from ifconfig, but did not work like IANS, or at all.
Only one interface was working.

The Cobalt uses a weird chipset ethernet cards that are built into the
motherboard. They use the dp83815 driver, and I believe that is the
chipset as well. 

Either way I played around with ifenslave and did not have any luck. I
am not sure if you have to have the bonding driver compiled or loaded in
your kernel. I would imagine that might have been my problem. But I am
not going to attempt to replace the Cobalt kernel. I will eventually be
phasing the machine out for one I can upgrade. :) That machine will have
Intel nics or a gigabit Intel nic so it won't be a problem.

> Anyway (hopefully not pushing my luck too much here :) anyone used the 
> syskonnect with some kind of channel bonding/aggregation and vlans?

No, may be with the card you want to use. But otherwise it should be
something that can be done. Like I said I am doing it and have for a
while with a dual nic card in one machine, and two ethernet cards in
another. Both are basically the same when all is said and done.

Reading and writing from those machines is faster than using just a
single line, so something is able to aggregate the bandwidth. Not sure
if it's a full 400mps but definitely over 200mps (single card full
duplex).

-- 
Sincerely,
William L. Thomson Jr.
Support Group
Obsidian-Studios Inc.
439 Amber Way
Petaluma, Ca. 94952
Phone  707.766.9509
Fax    707.766.8989
http://www.obsidian-studios.com

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