RE: More on Autonegotiation [7:73195]
David Vital 8/1/03 8:04:21 AM >>> >I have to ask what you are basing that statement on. I'm not trying to >dispute you, just to gain moe information. I have never seen anything that >would indicate a change in Duplex when set to 100 full on each end. Are you >suggesting that 100/half is the way to go with this? > >David Yes, that's what I'm saying. It's difficult to find this information but I was able to find it at one time and it's been proving out experientially in our network. We tend to buy a lot of one particular major computer manufacturer, and the NICs they use will do this. In fact, most of the NICs on our newer computers behave this way. It's almost a weekly issue around here since we started rolling out newer Cisco switches. It was not a problem with the 2924XL and Cat 5000, but it became a huge problem when we upgraded to a 6500, 2948G, 2980G, and 2950s. I'll look around to see if I can find those references for you and I'll post them if I'm successful. John Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73345&t=73195 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: More on Autonegotiation [7:73195]
I have to ask what you are basing that statement on. I'm not trying to dispute you, just to gain moe information. I have never seen anything that would indicate a change in Duplex when set to 100 full on each end. Are you suggesting that 100/half is the way to go with this? David Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73344&t=73195 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
More on Autonegotiation [7:73195]
Continuing our ongoing discussions of autonegotiation and the behavior of newer switches I thought I'd forward the following link: http://www.psiber.com/lm25ap01.htm The introduction on that page does an excellent job of explaining some of the problems we've been running into. I take issue with one statement, though. They suggest that you use AUTO when possible, or hard-set each end-device to the same commanded mode, whether 100/Full or 100/Half. I contend that with many modern NICs, a commanded setting of 100/Full is the worst possible setting and you should only use half duplex modes when choosing manual settings. Many NICs will fall back to half duplex when they detect a commanded mode link partner, and they usually don't give you any indication that this has occurred! Regards, John Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73195&t=73195 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
