[olug] victory and defeat w/Linux router @work

[Miller, Scott L (Omaha Networks)]

Thanks Sean, using that in a google search found the following
link: http://www.rhyshaden.com/ethernet.htm  scroll down aways to
the section titled "4.5 Fast Ethernet (802.3u) 100BaseTx".

-Scott

-----Original Message-----
From: olug-bounces at olug.org [mailto:olug-bounces at olug.org]On Behalf Of
Sean Edwards
Sent: Thursday, October 14, 2004 2:55 PM
To: Omaha Linux User Group
Subject: RE: [olug] victory and defeat w/Linux router @work


It's called the 5-4-3 rule.

-=Sean=-

--- "Miller, Scott L (Omaha Networks)"
<scott.l.miller at hp.com> wrote:

> Charles wrote:
> > Off of the second port coming out the 2600 is the 
> > cable to our switch, which is a netgear 16port,
> everything 
> > on this switch is fast as heck....we ran about
> 100M of cat6 
> > a couple weeks ago to our main building....it
> meets up with 
> > another netgear switch, i think its a 24port. 
> then daisied 
> > from that is another 2 24port netgears.
> 
> First thing, Fast Ethernet has a "diameter limit"
> and a 
> "daisy chain limit".  The diameter limit is based on
> how long
> it takes for a signal to get from one end of the
> network to
> the other.  I believe the daisy chain limit is
> closely tied
> to this "diameter" thing, but couldn't find a
> reference 
> quickly before replying.  But, you might be at or
> past the
> limits if what you've got is this:
>    router---switch---switch---switch---switch
> 
> What you should aim for is something like this:
> 
> 	router--------switch------switch
>                      |  |
>             switch---    ---switch
> 
> The other thing to check is to make sure all the
> uplink
> ports are hard set to 100Mbps Full Duplex.  If any
> of them
> don't autonegotiate properly, even 100/half greatly
> affects
> the apparent network speed.
> 
> -Scott
> _______________________________________________
> OLUG mailing list
> OLUG at olug.org
> http://lists.olug.org/mailman/listinfo/olug
> 



		
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