CCIE R&S why else ;-) Tim
""Priscilla Oppenheimer"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Tim Metz wrote: > > > > so to rephrase the original question, although there is never > > more than one > > token on the ring, there can be more than one data/command > > frame...???? > > Yes. There can be more than one frame if you use Early Token Release. It's > not likely, but it's allowed by the specifications. There's just one token > though. The token is a 3-byte "symbol of authority." That's what IEEE 802.5 > calls it, probably to avoid using the term frame. ;-) A sender grabs the > token and converts it do a frame, changing one bit, adding more bytes and > addressing, etc. > > Why are you studying Token Ring?? Ugh. ;-) > > _______________________________ > > Priscilla Oppenheimer > www.troubleshootingnetworks.com > www.priscilla.com > > > > > > or am I totally missing the point ;-) > > > > Tim > > > > ""Priscilla Oppenheimer"" wrote in > > message > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > Mike Mandulak wrote: > > > > > > > > Oops I forgot to cc my reply to the list again. but you're > > > > right. > > > > > > > > Here's what I sent him... > > > > Only one. However (there's always a however) the adapters > > can > > > > be configured > > > > to use ETR (early token release) which means that as soon > > as an > > > > adapter > > > > starts receiving a frame it can start transmitting its own > > data > > > > out the TX > > > > path while receiving the incoming frame. While that's not 2 > > > > tokens, it is 2 > > > > different frames on the wire at the same time. > > > > > > That's not really what it means, not that it matters much > > these days. ;-) > > > > > > With no early token release, a sending station must see its > > own frame come > > > back before it releases a free token that someone else can > > grab. > > > > > > With early token release (ETR), a sending station can release > > a token at > > the > > > end of its transmission, regarless of whether it's starting > > to receive its > > > own transmission yet. Someone else can grab the free token > > and turn it > > into > > > a frame. Hence, there can be more than one frame, as you say, > > but still > > only > > > one free token. > > > > > > It was all a bunch of marketing FUD really though. It would > > have to be a > > > physically very large network for the ETR feature to make any > > difference. > > On > > > typical networks, the sender was already getting back its own > > transmission > > > as it finished its transmission anyway. So it released a free > > token at > > about > > > the same time regardless if ETR was in use or not. But nobody > > cares any > > more > > > about the actual behavior. You just have to learn the theory. > > ;-) > > > > > > _________________________ > > > > > > Priscilla Oppenheimer > > > www.troubleshootingnetworks.com > > > www.priscilla.com > > > > > > > > > > > > ----- Original Message ----- > > > > From: "Ken Chipps" > > > > To: > > > > Sent: Sunday, September 22, 2002 9:37 PM > > > > Subject: Re: Token Ring fundamentals [7:53871] > > > > > > > > > > > > > One, unless early token release is in effect. Assuming I > > am > > > > remembering > > > > > my old Token Ring stuff right. > > > > > ""Tim Metz"" wrote in message > > > > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > > > > While doing some token ring reading I realized that I > > have > > > > no idea how > > > > > many > > > > > > tokens can be on the ring at one time. > > > > > > > > > > > > > > > > > > > > > > > > anyone??? stupid question?? > > > > > > > > > > > > > > > > > > > > > > > > Tim Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=54291&t=53871 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
