That's it, I quit. Where are my tire changing tools?
----Original Message Follows----
From: Priscilla Oppenheimer <[EMAIL PROTECTED]>
To: "Ejay Hire" <[EMAIL PROTECTED]>,[EMAIL PROTECTED]
Subject: Re: Token ring and duplex
Date: Wed, 18 Oct 2000 10:46:55 -0700
It's not "real" token ring. &;-) Seriously. Full-duplex Ethernet isn't real
CSMA/CD either.
The more we learn, the less we know! Argh.
Priscilla
At 08:36 AM 10/18/00, Ejay Hire wrote:
>Okay,now I'm Confuzzled. A Token ring Frame is timed so that the first
>bit of a MTU sized frame returns to the Sending station immediately after
>the last bit was transmitted. Then It checks the error/received bits and
>strips it off the ring. How could it work full duplex unless there were
>two tokens on the ring?
>
>----Original Message Follows----
>From: Priscilla Oppenheimer <[EMAIL PROTECTED]>
>Reply-To: Priscilla Oppenheimer <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>Subject: Re: Token ring and duplex
>Date: Tue, 17 Oct 2000 17:59:22 -0700
>
>The Dedicated Token Ring port adapter (PA-4R-DTR) is available on Cisco
>7500 series routers, Cisco 7200 series routers, and Cisco 7000 series
>routers with the 7000 Series Route Switch Processor (RSP7000) and 7000
>Series Chassis Interface (RSP7000CI).
>
>The PA-4R-DTR provides up to four IBM Token Ring or IEEE 802.5 Token Ring
>interfaces. Each Token Ring interface can be set for 4 Mbps or 16 Mbps
>half-duplex or full-duplex operation and can operate as a standard Token
>Ring station or as a concentrator port. The default for all interfaces is
>Token Ring station mode with half-duplex 16-Mbps operation. The PA-4R-DTR
>connects over Type 1 lobe or Type 3 lobe cables, with each interface
>providing an RJ-45 receptacle.
>
>So, Token Ring does have a "full-duplex" operation. I guess you would use
>it on back-to-back links, just like you use full-duplex Ethernet on
>back-to-back links.
>
>Priscilla
>
>At 05:13 PM 10/17/00, Ejay Hire wrote:
>>Full-Duplex/Half-Duplex settings do not apply in a Token ring environment.
>>
>>Duplex settings deterrmine whether or not a system can recieve and
>>transmit at the smae time in a CSMA/_C_ollision _D_etect (Ethernet)
>>environment.
>>Token Ring Does not use CSMA/CD, but use token-passing instead.
>>
>>On a Token Ring network, only one system transmits at a time, all of the
>>others listen.
>>
>>
>>----Original Message Follows----
>>From: "SH Wesson" <[EMAIL PROTECTED]>
>>Reply-To: "SH Wesson" <[EMAIL PROTECTED]>
>>To: [EMAIL PROTECTED]
>>Subject: Token ring and duplex
>>Date: Tue, 17 Oct 2000 18:07:16 GMT
>>
>>If a token ring is running at a speed of 16, should the duplex be full or
>>half. If it's at half, what may be some problems as a result of it.
>>thanks.
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>
>________________________
>
>Priscilla Oppenheimer
>http://www.priscilla.com
>
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________________________
Priscilla Oppenheimer
http://www.priscilla.com
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