When the Receive and Transmit paths are distinct, I believe that there
is no minimum length.
NY50TT wrote:
>
> We all hear about max cable lengths for Ethernet. But is there a minimum?
> If the TX pair of one side connects to the RX pair of the other, then
> collisions, if any, happen at the in
Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Murphy, George
Sent: Saturday, July 21, 2001 11:00 PM
To: [EMAIL PROTECTED]
Subject: RE: Ethernet Trivia mostly, Need an EE's answer probably.
[7:13233]
Got lots of "shortys" around our camp a
Got lots of "shortys" around our camp and never had any problems. 8 inch to
be exact.
-Original Message-
From: Greene, Patrick [mailto:[EMAIL PROTECTED]]
Sent: Saturday, July 21, 2001 11:44 PM
To: [EMAIL PROTECTED]
Subject: RE: Ethernet Trivia mostly, Need an EE's answ
I do believe the shortest patch cord length for 10/100Base-T is 1 meter.
-Original Message-
From: NY50TT
To: [EMAIL PROTECTED]
Sent: 7/21/2001 12:48 PM
Subject: Ethernet Trivia mostly, Need an EE's answer probably. [7:13199]
We all hear about max cable lengths for Ethernet. B
-Original Message-
> From: NY50TT
> To: [EMAIL PROTECTED]
> Sent: 7/21/01 12:48 PM
> Subject: Ethernet Trivia mostly, Need an EE's answer probably. [7:13199]
>
> We all hear about max cable lengths for Ethernet. But is there a
> minimum?
> If the TX pair of one
I remember reading that it was 3 feet, but I can't give you a source on
that. I'll hunt around.
-Original Message-
From: NY50TT
To: [EMAIL PROTECTED]
Sent: 7/21/01 12:48 PM
Subject: Ethernet Trivia mostly, Need an EE's answer probably. [7:13199]
We all hear about ma
We all hear about max cable lengths for Ethernet. But is there a minimum?
If the TX pair of one side connects to the RX pair of the other, then
collisions, if any, happen at the ingress of the hub or switch in the
buffer, or on the buffer of the nic if just using a really short cross over,
is thi
At 01:54 PM 10/11/00, Kevin L. Kultgen wrote:
>I'm looking at some of the study notes for CNX from www.optimized.com and I
>can answer most situations but there are two that confuse me:
>
>a) Significantly more than 8 bytes of "55" or "AA" hexadecimal data
>appended to the end.
If it's more than
need them though!!
> >
> >BTW, my calculations for the speed of light resulted in 299,793,100 m/s
> >
> >
> >- Original Message -
> >From: Leigh Anne Chisholm <[EMAIL PROTECTED]>
> >To: Kevin L. Kultgen <[EMAIL PROTECTED]>; Tim O'Bri
Thanks for the interesting article, Marty. This was especially cool:
"Admiral Grace Murray Hopper received many awards and commendations for her
accomplishments. In 1969, she was awarded the first ever Computer Science
Man-of-the-Year Award from the Data Processing Management Association."
The
mments
>fit in, just a day later than the weekend warriors.
>
>
>-Original Message-
>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
>Frank Wells
>Sent: Monday, October 09, 2000 3:38 PM
>To: [EMAIL PROTECTED]
>Subject: RE: Ethernet Trivia
>
&
et or frame, then 100BaseT gets there first.
Follow the thread, and I hope you will see that my comments
fit in, just a day later than the weekend warriors.
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Frank Wells
Sent: Monday, October 09, 2000 3:38
<[EMAIL PROTECTED]>
>Reply-To: <[EMAIL PROTECTED]>
>To: "whatshakin" <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>
>Subject: RE: Ethernet Trivia
>Date: Mon, 9 Oct 2000 14:07:01 -0500
>
>Of course bits occupy line space. It's called
>wavelength. And b
er 07, 2000 1:23 PM
To: [EMAIL PROTECTED]
Subject: Re: Ethernet Trivia
Comments inserted.
- Original Message -
From: Jay Hennigan <[EMAIL PROTECTED]>
Newsgroups: groupstudy.cisco
To: <[EMAIL PROTECTED]>
Sent: Saturday, October 07, 2000 9:14 AM
Subject: Re: Ethernet Trivia
>
D] [mailto:[EMAIL PROTECTED]]On Behalf Of
whatshakin
Sent: Saturday, October 07, 2000 12:20 AM
To: [EMAIL PROTECTED]
Subject: Re: Ethernet Trivia
This makes it sound like there is actually something tangible being put on
the wire. Bits are merely ones and zeros which are signaled by different
vo
Priscilla Oppenheimer wrote:
>
> At 01:03 AM 10/8/00, Jeff Kell wrote:
> >Priscilla Oppenheimer wrote:
> >
> > > Does this help at all? Speed of light in twisted-pair cable is 177,000
> > > km/sec. So a bit occupies 177,000 divided by 10 million bits per second, or
> > > 17.7 meters, in 10 Mbps E
At 01:03 AM 10/8/00, Jeff Kell wrote:
>Priscilla Oppenheimer wrote:
>
> > Does this help at all? Speed of light in twisted-pair cable is 177,000
> > km/sec. So a bit occupies 177,000 divided by 10 million bits per second, or
> > 17.7 meters, in 10 Mbps Ethernet.
> >
> > 177,000 divided by 100 mill
Priscilla Oppenheimer wrote:
> Does this help at all? Speed of light in twisted-pair cable is 177,000
> km/sec. So a bit occupies 177,000 divided by 10 million bits per second, or
> 17.7 meters, in 10 Mbps Ethernet.
>
> 177,000 divided by 100 million bits per second is 1.77 meters for 100 Mbps
>
EMAIL PROTECTED]>
Sent: Saturday, October 07, 2000 12:15 PM
Subject: Re: Ethernet Trivia
> At 10:20 PM 10/6/00, whatshakin wrote:
> >This makes it sound like there is actually something tangible being put
on
> >the wire. Bits are merely ones and zeros which are signaled by diff
0 m/s
>
>
>- Original Message -
>From: Leigh Anne Chisholm <[EMAIL PROTECTED]>
>To: Kevin L. Kultgen <[EMAIL PROTECTED]>; Tim O'Brien
><[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
>Sent: Friday, October 06, 2000 4:15 PM
>Subject: RE: Ethernet Tr
On 7 Oct 2000 14:23:15 -0400, whatshakin <[EMAIL PROTECTED]> wrote:
:The physical length of a signal is not inversely proportional to its
:frequency. It differs depending on the line encoding. Again, a bit is the
:term applied to the signal state. Signal
:states occupy line space.
Point take
Comments inserted.
- Original Message -
From: Jay Hennigan <[EMAIL PROTECTED]>
Newsgroups: groupstudy.cisco
To: <[EMAIL PROTECTED]>
Sent: Saturday, October 07, 2000 9:14 AM
Subject: Re: Ethernet Trivia
> On 7 Oct 2000 01:20:43 -0400, whatshakin <[EMAIL PROTECTED]
On 7 Oct 2000 01:20:43 -0400, whatshakin <[EMAIL PROTECTED]> wrote:
:This makes it sound like there is actually something tangible being put on
:the wire. Bits are merely ones and zeros which are signaled by different
:voltages etc in the line encoding.
:
:Bits do not occupy line space.
Sure th
. Everything in
between is just signals.
- Original Message -
From: ElephantChild <[EMAIL PROTECTED]>
To: whatshakin <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Saturday, October 07, 2000 1:18 AM
Subject: Re: Ethernet Trivia
> On Fri, 6 Oct 2000, whatshakin wrote:
>
Depends on whether you are asking about the leading
bit, or the whole frame.
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Martin-Guy Richard
Sent: Wednesday, October 04, 2000 11:21 AM
To: [EMAIL PROTECTED]
Subject: Re: OT: Ethernet Trivia
Both of
m/s
- Original Message -
From: Leigh Anne Chisholm <[EMAIL PROTECTED]>
To: Kevin L. Kultgen <[EMAIL PROTECTED]>; Tim O'Brien
<[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
Sent: Friday, October 06, 2000 4:15 PM
Subject: RE: Ethernet Trivia
> Ahh Kevin, your po
la already has her CNX so she should be treated as a higher
> >(final?) authority.
> >
> >Kevin L. Kultgen
> >
> >- Original Message -
> >From: "Priscilla Oppenheimer" <[EMAIL PROTECTED]>
> >To: "Kevin L. Kultgen" <[EMAIL PROTECTED]>;
That math does not sound quite right.
- Original Message -
From: Priscilla Oppenheimer <[EMAIL PROTECTED]>
To: Kevin L. Kultgen <[EMAIL PROTECTED]>; Tim O'Brien
<[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
Sent: Friday, October 06, 2000 5:01 PM
Subject:
]]
Sent: Friday, October 06, 2000 8:50 AM
To: [EMAIL PROTECTED]
Subject: Re: OT: Ethernet Trivia
Nnanna Obuba wrote:
>
> Let's say we have a 2 lane and a 5 lane road, 2 cars
> travel at the same speed over those roads,and neither
> experiences traffic, which will do 100 miles first
>
>- Original Message -
>From: "Priscilla Oppenheimer" <[EMAIL PROTECTED]>
>To: "Kevin L. Kultgen" <[EMAIL PROTECTED]>; "Tim O'Brien"
><[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
>Sent: Friday, October 06, 2000 6:01 PM
&
t;[EMAIL PROTECTED]>; "Tim O'Brien"
<[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
Sent: Friday, October 06, 2000 6:18 PM
Subject: Re: Ethernet Trivia
> My brain hurts! &;-) My point was simply that on a short cable, the issue
> of how much "space" a bit tak
>; <[EMAIL PROTECTED]>
Sent: Friday, October 06, 2000 6:01 PM
Subject: Re: Ethernet Trivia
> Kevin,
>
> Great analysis.
>
> Does this help at all? Speed of light in twisted-pair cable is 177,000
> km/sec. So a bit occupies 177,000 divided by 10 million bits per second,
ttp://www.mycnx2000.com, http://www.cnx2000.com).
>
>- Original Message -
>From: "Tim O'Brien" <[EMAIL PROTECTED]>
>To: "Kevin L. Kultgen" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>;
><[EMAIL PROTECTED]>
>Sent: Thursday, October 05,
Tim O'Brien; [EMAIL PROTECTED]
> Subject: Re: Ethernet Trivia
>
>
> They would both start at the same time. The 100bT interface would be
> placing bits on the wire faster than the 10bT interface and would complete
> placing bits on the wire in 1/10 the time. But those bits c
On Wed, 4 Oct 2000, Frank wrote:
> Let's say we have a 10Mbps and 100Mbps interface. Both transmit the same
> sized
> frame over the same type of media and over the same distance and neither
> experience
> a collision. Which will get to the destination first?
The one on the 100MB interface.
On Wed, 4 Oct 2000, Nnanna Obuba wrote:
> Let's say we have a 2 lane and a 5 lane road, 2 cars
> travel at the same speed over those roads,and neither
> experiences traffic, which will do 100 miles first?
Not exactly.
You're standing at the city limit sign entering Switchville.
The lead cars
On Wed, 4 Oct 2000, Frank wrote:
> Let's say we have a 10Mbps and 100Mbps interface. Both transmit the same
> sized
> frame over the same type of media and over the same distance and neither
> experience
> a collision. Which will get to the destination first?
the first frames in 2 identical st
//www.cnx2000.com).
- Original Message -
From: "Tim O'Brien" <[EMAIL PROTECTED]>
To: "Kevin L. Kultgen" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>;
<[EMAIL PROTECTED]>
Sent: Thursday, October 05, 2000 5:49 AM
Subject: Re: Ethernet Trivia
> So
.
Correct?
Tim
- Original Message -
From: "Kevin L. Kultgen" <[EMAIL PROTECTED]>
Newsgroups: groupstudy.cisco
To: <[EMAIL PROTECTED]>
Sent: Wednesday, October 04, 2000 12:35 PM
Subject: Re: Ethernet Trivia
They would bith reach the destination at the same time
, MCSE, etc
[EMAIL PROTECTED]
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Art Pereira
Sent: Wednesday, October 04, 2000 12:19 PM
To: [EMAIL PROTECTED]
Subject: Re: Ethernet Trivia
neither or both whichever way you want to look at it.
"&
I believe this is correct. The first packets will arrive at the same time,
but subsequent packets on the Fast Ethernet will arrive more quickly because
of the encoding.
""Kevin L. Kultgen"" <[EMAIL PROTECTED]> wrote in message
8rfmco$pgo$[EMAIL PROTECTED]">news:8rfmco$pgo$[EMAIL PROTECTED]...
> Th
Nnanna Obuba wrote:
>
> Let's say we have a 2 lane and a 5 lane road, 2 cars
> travel at the same speed over those roads,and neither
> experiences traffic, which will do 100 miles first?
Not exactly.
You're standing at the city limit sign entering Switchville.
The lead cars of two 512-car mot
Frank wrote:
>
> Let's say we have a 10Mbps and 100Mbps interface. Both transmit the same
> sized
> frame over the same type of media and over the same distance and neither
> experience
> a collision. Which will get to the destination first?
The one on the 100MB interface.
Hint: "Serializa
I believe both would arrive at the same time, i.e. start of frame. However;
because of encoding, the packet on 100Mb line would complete the process of
sending the entire packet first.
Ed
**NOTE: New CCNA/CCDA List has been formed. For more information go to
http://www.groupstudy.com/list/Assoc
Let's say we have a 2 lane and a 5 lane road, 2 cars
travel at the same speed over those roads,and neither
experiences traffic, which will do 100 miles first?
--- Frank <[EMAIL PROTECTED]> wrote:
> Let's say we have a 10Mbps and 100Mbps interface.
> Both transmit the same
> sized
> frame over
ECTED]
Subject: OT: Ethernet Trivia
Let's say we have a 10Mbps and 100Mbps interface. Both transmit the same
sized
frame over the same type of media and over the same distance and neither
experience
a collision. Which will get to the destination first?
**NOTE: New CCNA/CCDA List has been f
I'm going to have to say that the answer to that is: The one that transmitts
first! The question never said that they were transmitting at the same time
and/or on the same physical segment.
> >Let's say we have a 10Mbps and 100Mbps interface. Both transmit the same
> >sized
> >frame over the sa
Good question!
I would guess that they would both arrive at the destination at the same
time. The difference would be that the 100Mbps packet would finish
transmitting first.
The difference in speed can't be propagation delay since it goes over the
same media. So the difference in speeds sh
They would bith reach the destination at the same time (speed of electricity
through copper). The difference is in the rate at which the bits are placed
on the wire, the Fast Ethernet would be placing 20 bits of information
(actually encoded as 24 bits) on the wire for every 2 bits that the 10bT
Trick question!
The one that thinks happy thoughts!
: D
Casey
>From: "Frank" <[EMAIL PROTECTED]>
>Reply-To: "Frank" <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>Subject: OT: Ethernet Trivia
>Date: Wed, 4 Oct 2000 11:09:03 -0500
>Received: fr
Both of them. I think!
Frank wrote:
> Let's say we have a 10Mbps and 100Mbps interface. Both transmit the same
> sized
> frame over the same type of media and over the same distance and neither
> experience
> a collision. Which will get to the destination first?
>
> **NOTE: New CCNA/CCDA List
neither or both whichever way you want to look at it.
""Frank"" <[EMAIL PROTECTED]> wrote in message
8rfksm$l2s$[EMAIL PROTECTED]">news:8rfksm$l2s$[EMAIL PROTECTED]...
> Let's say we have a 10Mbps and 100Mbps interface. Both transmit the same
> sized
> frame over the same type of media
Let's say we have a 10Mbps and 100Mbps interface. Both transmit the same
sized
frame over the same type of media and over the same distance and neither
experience
a collision. Which will get to the destination first?
**NOTE: New CCNA/CCDA List has been formed. For more information go to
http:/
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