Hi,
True!! Only 100Meg in and 100Meg out but on a 100Meg Half duplex connection
at best you get less than 50Meg. You must listen to your own signal
anything over 50% in one direction is pure rubbish. In reality over 30% of
the specified bandwidth you are probably already retransmitting heaps.
I therefore disagree that there is no significant difference in network
performance. However, the ability of the server and or the network cards
ability to pull data off the network and deliver it to the server is a
different matter. A good example is from back in the old days with an 8bit
10Meg Half duplex card into a I386 a real speed of 280K was more the reality.
Just some thoughts.
Teunis,
Hobart, Tasmania
Australia
On Thursday, April 26, 2001 at 03:14:50 PM, David Chandler wrote:
> hey! somebody gets it! Thanks Priscilla:
>
> It always bothers me that full-duplex is refereed to as 200 meg. The
> server folks always think that all their performance issues will go away
> when they go to "full-duplex". Sure, no collision, but considering the
> unbalanced nature of client/server traffic it doesn't make that big of a
> throughput difference.
>
> I'm surprised that my T1's are not referred to as 3 mbps links. They are
> full-duplex too :->
>
> DaveC
>
> Oppenheimer wrote:
> >
> > At 12:23 AM 4/26/01, md. nazri wrote:
> > >if it's true..that's a good indicator for hardware health checkup.....
> > >another Q, if we set the FE to be full-duplex, does it mean we get
100meg
> > >for tx and 100meg for rx, so total 200meg for a connection...?
> >
> > Each of the two stations on a point-to-point FE full-duplex link get
> > dedicated 100 Mbps bandwidth for transmitting. One station's transmit
> > medium is the other's receive medium. Some people call this 200 Mbps. In
> > actuality most traffic types don't take advantage of this.
> >
> > >----- Original Message -----
> > >From: "Priscilla Oppenheimer"
> > >To:
> > >Sent: Thursday, April 26, 2001 9:07 AM
> > >Subject: Re: FastEthernet is up, Line protocol down [7:1828]
> > >
> > >
> > > > I don't think it's just Fast Ethernet. I've seen "Slow" Ethernet
report
> > > > that the interface is up, down when nothing was attached. It seems to
> > just
> > > > be an indication that the interface passed a hardware check.
> > > >
> > > > Priscilla
> > > >
> > > > At 08:21 PM 4/25/01, md. nazri wrote:
> > > > >thanks for the answer...
> > > > >i understand that LP will down if no connection attach, but why FE
> still
> > >up,
> > > > >does it up forever until we shut it down? Does it apply the same to
> > > > >Ethernet..?
> > > > >----- Original Message -----
> > > > >From: "Vincent Chong"
> > > > >To:
> > > > >Sent: Wednesday, April 25, 2001 3:48 PM
> > > > >Subject: Re: FastEthernet is up, Line protocol down [7:1828]
> > > > >
> > > > >
> > > > > > 1) I guess you enable the fastethernet port in the running
> > > > > > configuration. You have to
> > > > > > shutdown the port, so the port will administrative shut down
> and
> > >line
> > > > > > protocol down.
> > > > > >
> > > > > > 2) Line protocol will up if there is any phyiscal connection
> > >attached
> > > > >to
> > > > > > Fastethernet.
> > > > > > Becasue the port in your router will detect keepalive signal,
> > when
> > >it
> > > > > > detected, it will
> > > > > > up. You can type no keepalive under interface
configuration,
> > >the
> > > > > > ethernet interface
> > > > > > will keep up even no physical connection. You have to enable
> the
> > > > > > interface, of courese.
> > > > > >
> > > > > > Hope this help
> > > > > > Vincent Chong
> > > > > >
> > > > > >
> > > > > >
> > > > > > ""md. nazri"" hi all,
> > > > > > > got one question regarding FastEthernet on Cisco 2620..
> > > > > > > why the status showed FastEthernet is up, Line protocol down
> > >although
> > > > >the
> > > > > > > cable was pulled out from the port...in what cases the port
will
> > > > >down..any
> > > > > > > help appreciated
> > > > > > >
> > > > > > > tq
> > > > > > > FAQ, list archives, and subscription info:
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> > > >
> > > >
> > > > ________________________
> > > >
> > > > Priscilla Oppenheimer
> > > > http://www.priscilla.com
> > > > FAQ, list archives, and subscription info:
> > >http://www.groupstudy.com/list/cisco.html
> > > > Report misconduct and Nondisclosure violations to
[EMAIL PROTECTED]
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> >
> > ________________________
> >
> > Priscilla Oppenheimer
> > http://www.priscilla.com
> > FAQ, list archives, and subscription info:
> http://www.groupstudy.com/list/cisco.html
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>
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