Re: collissions on serial line? [7:34816]
Not to my knowledge. Collisions are only relevant to contention based technologies the most common being CSMA/CD (Collision Sense Multiple Access with Collision Detection) as defined by the IEEE in 802.3. Serial links do not fit this bill as they have separate Tx and Rx pairs and therefore operate as full duplex. Regards, Phil. --- somera cecilia wrote: Folks, I've been searching CCO but cannot find answers to this. Is it possible to get collissions in serial lines? If there are, what could cause this? [EMAIL PROTECTED] __ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=34836t=34816 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: collissions on serial line? [7:34816]
Right. More light. Collisions are possible only on technologies like CSMACD, CSMACA TR. In these technologies there is a contest for bandwidth. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Sean Knox Sent: Friday, February 08, 2002 10:35 AM To: [EMAIL PROTECTED] Subject: RE: collissions on serial line? [7:34816] A serial line is a point-to-point link. Collisions are only possible on a shared medium, such as ethernet. -Original Message- From: somera cecilia [mailto:[EMAIL PROTECTED]] Sent: Thursday, February 07, 2002 7:46 PM To: [EMAIL PROTECTED] Subject: collissions on serial line? [7:34816] Folks, I've been searching CCO but cannot find answers to this. Is it possible to get collissions in serial lines? If there are, what could cause this? _ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=34838t=34816 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: collissions on serial line? [7:34816]
Theoretically, it is impossible to get collisions on a serial line. LAN bus architecture experiences collisions because two devices can send frames to the bus at the exact same time. Serial interfaces transmit on a frequency if you will. This means that the frames will pass each other even when sent at the same time. Eric CCNP --- somera cecilia wrote: Folks, I've been searching CCO but cannot find answers to this. Is it possible to get collissions in serial lines? If there are, what could cause this? [EMAIL PROTECTED] __ Do You Yahoo!? Send FREE Valentine eCards with Yahoo! Greetings! http://greetings.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=34842t=34816 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: collissions on serial line? [7:34816]
No, it's not possible. Cisco programmers just got a bit lazy and didn't remove that line from the show int serial output, which is based on the show int ethernet output. Priscilla At 10:45 PM 2/7/02, somera cecilia wrote: Folks, I've been searching CCO but cannot find answers to this. Is it possible to get collissions in serial lines? If there are, what could cause this? Priscilla Oppenheimer http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=34878t=34816 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: collissions on serial line? [7:34816]
If they pass each other, that's the opposite of a collision. Priscilla At 09:19 AM 2/8/02, Eric Mwambaji wrote: Theoretically, it is impossible to get collisions on a serial line. LAN bus architecture experiences collisions because two devices can send frames to the bus at the exact same time. Serial interfaces transmit on a frequency if you will. This means that the frames will pass each other even when sent at the same time. Eric CCNP --- somera cecilia wrote: Folks, I've been searching CCO but cannot find answers to this. Is it possible to get collissions in serial lines? If there are, what could cause this? [EMAIL PROTECTED] __ Do You Yahoo!? Send FREE Valentine eCards with Yahoo! Greetings! http://greetings.yahoo.com Priscilla Oppenheimer http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=34880t=34816 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: collissions on serial line? [7:34816]
Phil, I belive that the CS in CSMA stands for Carrier Sense. Oleg Oz... List Lurker Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=34895t=34816 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: collissions on serial line? [7:34816]
AFAIK, it's not possible to get collisions on a serial line. I remember someone saying something about this being an example of Cisco reusing code in their IOS, i.e. using the same ouput routine for both serial and ethernet lines therefore it shows collisions even though it's not possible to get them on a serial line. Mike W. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=34822t=34816 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: collissions on serial line? [7:34816]
A serial line is a point-to-point link. Collisions are only possible on a shared medium, such as ethernet. -Original Message- From: somera cecilia [mailto:[EMAIL PROTECTED]] Sent: Thursday, February 07, 2002 7:46 PM To: [EMAIL PROTECTED] Subject: collissions on serial line? [7:34816] Folks, I've been searching CCO but cannot find answers to this. Is it possible to get collissions in serial lines? If there are, what could cause this? Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=34824t=34816 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
