Re: 10 half or 100 full [7:64482]
Wow!, what is that about? While my personal experience conflicts with the content of the email, ( I have never had reliable sucess with auto-negotiation in a server or workstation environment) that is no reason to be so fundamentaly rude towards the sender. Peri pointed out that they use very specific cards and drivers in their environment, therefore he may very well have sucess with the Autonegotiation *feature*. Ron Beasley wrote: YOU NEED TO TELL SISCO TO GET YOUR ASS OFF MY EMAIL LIST NOW1 Peri Sophos wrote:hI Mike, my opinion is that a server should be forced to 100mb full duplex and on the switch side 100mb full duplex ONLY for servers though. On the wkst side and switch side things should be left on auto auto. I do this in my company , we have around 3000 users in the building , I don't have a problem at all. We have a standard on Intel cards through out the network.Comapaq cards sometimes seem to give a little bit more trouble when it comes to forcing the cards to 100mb full duplex . this only really happens when the drives for the cards are not of the latest. Thanks -Original Message- From: Mike Momb [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 05, 2003 5:25 PM To: [EMAIL PROTECTED] Subject: 10 half or 100 full [7:64482] To all, I know this subject has been talked about on a workstation level but I want to ask it on a network level. We recently replaced our Nortel network with Cisco switches and we seem to have a slowness level across the network at certain times. We have a raging debate on what speed to set the NIC cards and switches. Some folks say set the switches and PCs at 10mb half duplex and others say set them at 100mb full duplex and still others say auto on both ends should work. It has been my experience that auto has never worked very well. My question is this, what has been this groups experience on how to set the ports for the maximum bandwith. We are using a combination of Cat 5 Cat 3 cables. Any advice would be appreciated. thanks Mike NOTICE - This message contains privileged and confidential information intended only for the use of the addressee named above. Any review, retransmission, dissemination, copying, disclosure or other use of, or taking of any action in reliance upon, this information by person or entities other than the intended recipient is prohibited. If you have received this message in error, please notify the sender by return email and delete this message. This message should not be copied or used for any purpose other than intended, nor should it be disclosed to any other person. Any views expressed in this message are those of the individual sender, except where the sender specifically states them to be the view of Investec Group, its subsidiaries or associates. The Investec Group is not liable for the security of information sent by e-mail at your request, nor for the proper and complete transmission of the information contained in the communication nor for any delay in its receipt. Please note that the recipient must scan this e-mail and any attached files for viruses and the like. The Investec Group accepts no liability of whatever nature for any loss, liability, damage or expense resulting directly or indirectly from the access of any files which are attached to this message. Do you Yahoo!? Yahoo! Tax Center - forms, calculators, tips, and more -- Thomas Crowe Senior Engineer / Senior Architect EMC Proven Professional, Master Architect EMC Proven Professional, Master Operator CTS Professional Services, Atlanta Yahoo IM: thomas_crowe MS Messenger: [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=64834t=64482 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: 10 half or 100 full [7:64482]
Ron Beasley wrote: YOU NEED TO TELL SISCO TO GET YOUR ASS OFF MY EMAIL LIST NOW1 Gee...I really hope that maybe Ron has some friends that got ahold of his computer and played a bad prank. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=64846t=64482 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: 10 half or 100 full [7:64482]
hI Mike, my opinion is that a server should be forced to 100mb full duplex and on the switch side 100mb full duplex ONLY for servers though. On the wkst side and switch side things should be left on auto auto. I do this in my company , we have around 3000 users in the building , I don't have a problem at all. We have a standard on Intel cards through out the network.Comapaq cards sometimes seem to give a little bit more trouble when it comes to forcing the cards to 100mb full duplex . this only really happens when the drives for the cards are not of the latest. Thanks -Original Message- From: Mike Momb [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 05, 2003 5:25 PM To: [EMAIL PROTECTED] Subject: 10 half or 100 full [7:64482] To all, I know this subject has been talked about on a workstation level but I want to ask it on a network level. We recently replaced our Nortel network with Cisco switches and we seem to have a slowness level across the network at certain times. We have a raging debate on what speed to set the NIC cards and switches. Some folks say set the switches and PCs at 10mb half duplex and others say set them at 100mb full duplex and still others say auto on both ends should work. It has been my experience that auto has never worked very well. My question is this, what has been this groups experience on how to set the ports for the maximum bandwith. We are using a combination of Cat 5 Cat 3 cables. Any advice would be appreciated. thanks Mike NOTICE - This message contains privileged and confidential information intended only for the use of the addressee named above. Any review, retransmission, dissemination, copying, disclosure or other use of, or taking of any action in reliance upon, this information by person or entities other than the intended recipient is prohibited. If you have received this message in error, please notify the sender by return email and delete this message. This message should not be copied or used for any purpose other than intended, nor should it be disclosed to any other person. Any views expressed in this message are those of the individual sender, except where the sender specifically states them to be the view of Investec Group, its subsidiaries or associates. The Investec Group is not liable for the security of information sent by e-mail at your request, nor for the proper and complete transmission of the information contained in the communication nor for any delay in its receipt. Please note that the recipient must scan this e-mail and any attached files for viruses and the like. The Investec Group accepts no liability of whatever nature for any loss, liability, damage or expense resulting directly or indirectly from the access of any files which are attached to this message. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=64575t=64482 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: 10 half or 100 full [7:64482]
Sorry forgot to mention , cat3 cable wont go well with 100mb full duplex and is not a very good cable :) -Original Message- From: M.C. van den Bovenkamp [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 05, 2003 5:39 PM To: [EMAIL PROTECTED] Subject: Re: 10 half or 100 full [7:64482] Mike Momb wrote: very well. My question is this, what has been this groups experience on how to set the ports for the maximum bandwith. We are using a combination of Cat 5 Cat 3 cables. Any advice would be appreciated. CAT3? Ouch. If you can't be *very* sure which cable run is what (CAT3 vs. CAT5), forcing everything to 10/Full is as good as it's going to get, because CAT3 won't support 100Mbps. Which also makes autonegotiation A Very Bad Idea, as that will happily negotiate 100Mbps over CAT3, even when it does what it's supposed to. Regards, Marco. NOTICE - This message contains privileged and confidential information intended only for the use of the addressee named above. Any review, retransmission, dissemination, copying, disclosure or other use of, or taking of any action in reliance upon, this information by person or entities other than the intended recipient is prohibited. If you have received this message in error, please notify the sender by return email and delete this message. This message should not be copied or used for any purpose other than intended, nor should it be disclosed to any other person. Any views expressed in this message are those of the individual sender, except where the sender specifically states them to be the view of Investec Group, its subsidiaries or associates. The Investec Group is not liable for the security of information sent by e-mail at your request, nor for the proper and complete transmission of the information contained in the communication nor for any delay in its receipt. Please note that the recipient must scan this e-mail and any attached files for viruses and the like. The Investec Group accepts no liability of whatever nature for any loss, liability, damage or expense resulting directly or indirectly from the access of any files which are attached to this message. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=64576t=64482 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: 10 half or 100 full [7:64482]
YOU NEED TO TELL SISCO TO GET YOUR ASS OFF MY EMAIL LIST NOW1 Peri Sophos wrote:hI Mike, my opinion is that a server should be forced to 100mb full duplex and on the switch side 100mb full duplex ONLY for servers though. On the wkst side and switch side things should be left on auto auto. I do this in my company , we have around 3000 users in the building , I don't have a problem at all. We have a standard on Intel cards through out the network.Comapaq cards sometimes seem to give a little bit more trouble when it comes to forcing the cards to 100mb full duplex . this only really happens when the drives for the cards are not of the latest. Thanks -Original Message- From: Mike Momb [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 05, 2003 5:25 PM To: [EMAIL PROTECTED] Subject: 10 half or 100 full [7:64482] To all, I know this subject has been talked about on a workstation level but I want to ask it on a network level. We recently replaced our Nortel network with Cisco switches and we seem to have a slowness level across the network at certain times. We have a raging debate on what speed to set the NIC cards and switches. Some folks say set the switches and PCs at 10mb half duplex and others say set them at 100mb full duplex and still others say auto on both ends should work. It has been my experience that auto has never worked very well. My question is this, what has been this groups experience on how to set the ports for the maximum bandwith. We are using a combination of Cat 5 Cat 3 cables. Any advice would be appreciated. thanks Mike NOTICE - This message contains privileged and confidential information intended only for the use of the addressee named above. Any review, retransmission, dissemination, copying, disclosure or other use of, or taking of any action in reliance upon, this information by person or entities other than the intended recipient is prohibited. If you have received this message in error, please notify the sender by return email and delete this message. This message should not be copied or used for any purpose other than intended, nor should it be disclosed to any other person. Any views expressed in this message are those of the individual sender, except where the sender specifically states them to be the view of Investec Group, its subsidiaries or associates. The Investec Group is not liable for the security of information sent by e-mail at your request, nor for the proper and complete transmission of the information contained in the communication nor for any delay in its receipt. Please note that the recipient must scan this e-mail and any attached files for viruses and the like. The Investec Group accepts no liability of whatever nature for any loss, liability, damage or expense resulting directly or indirectly from the access of any files which are attached to this message. Do you Yahoo!? Yahoo! Tax Center - forms, calculators, tips, and more Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=64599t=64482 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: 10 half or 100 full [7:64482]
Could I ask sir as to why you are so rude ? and what the problem is ?? I merely tried to help on a topic and I let Mike know how we run things on our network , and to let him know this works well, was only trying to help NOT offend anyone. By the way you spell Cisco like this and NOT like you did. Thanks -Original Message- From: Ron Beasley [mailto:[EMAIL PROTECTED] Sent: Thursday, March 06, 2003 2:16 PM To: Peri Sophos; [EMAIL PROTECTED] Subject: RE: 10 half or 100 full [7:64482] YOU NEED TO TELL SISCO TO GET YOUR ASS OFF MY EMAIL LIST NOW1 Peri Sophos wrote: hI Mike, my opinion is that a server should be forced to 100mb full duplex and on the switch side 100mb full duplex ONLY for servers though. On the wkst side and switch side things should be left on auto auto. I do this in my company , we have around 3000 users in the building , I don't have a problem at all. We have a standard on Intel cards through out the network.Comapaq cards sometimes seem to give a little bit more trouble when it comes to forcing the cards to 100mb full duplex . this only really happens when the drives for the cards are not of the latest. Thanks -Original Message- From: Mike Momb [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 05, 2003 5:25 PM To: [EMAIL PROTECTED] Subject: 10 half or 100 full [7:64482] To all, I know this subject has been talked about on a workstation level but I want to ask it on a network level. We recently replaced our Nortel network with Cisco switches and we seem to have a slowness level across the network at certain times. We have a raging debate on what speed to set the NIC cards and switches. Some folks say set the switches and PCs at 10mb half duplex and others say set them at 100mb full duplex and still others say auto on both ends should work. It has been my experience that auto has never worked very well. My question is this, what has been this groups experience on how to set the ports for the maximum bandwith. We are using a combination of Cat 5 Cat 3 cables. Any advice would be appreciated. thanks Mike NOTICE - This message contains privileged and confidential information intended only for the use of the addressee named above. Any review, retransmission, dissemination, copying, disclosure or other use of, or taking of any action in reliance upon, this information by person or entities other than the intended recipient is prohibited. If you have received this message in error, please notify the sender by return email and delete this message. This message should not be copied or used for any purpose other than intended, nor should it be disclosed to any other person. Any views expressed in this message are those of the individual sender, except where the sender specifically states them to be the view of Investec Group, its subsidiaries or associates. The Investec Group is not liable for the security of information sent by e-mail at your request, nor for the proper and complete transmission of the information contained in the communication nor for any delay in its receipt. Please note that the recipient must scan this e-mail and any attached files for viruses and the like. The Investec Group accepts no liability of whatever nature for any loss, liability, damage or expense resulting directly or indirectly from the access of any files which are attached to this message. _ Do you Yahoo!? Yahoo! Tax Center - forms, calculators, tips, and more NOTICE - This message contains privileged and confidential information intended only for the use of the addressee named above. Any review, retransmission, dissemination, copying, disclosure or other use of, or taking of any action in reliance upon, this information by person or entities other than the intended recipient is prohibited. If you have received this message in error, please notify the sender by return email and delete this message. This message should not be copied or used for any purpose other than intended, nor should it be disclosed to any other person. Any views expressed in this message are those of the individual sender, except where the sender specifically states them to be the view of Investec Group, its subsidiaries or associates. The Investec Group is not liable for the security of information sent by e-mail at your request, nor for the proper and complete transmission of the information contained in the communication nor for any delay in its receipt. Please note that the recipient must scan this e-mail and any attached files for viruses and the like. The Investec Group accepts no liability of whatever nature for any loss, liability, damage or expense resulting directly or indirectly from the access of any files which are attached to this message. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=64600t=64482 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report
10 half or 100 full [7:64482]
To all, I know this subject has been talked about on a workstation level but I want to ask it on a network level. We recently replaced our Nortel network with Cisco switches and we seem to have a slowness level across the network at certain times. We have a raging debate on what speed to set the NIC cards and switches. Some folks say set the switches and PCs at 10mb half duplex and others say set them at 100mb full duplex and still others say auto on both ends should work. It has been my experience that auto has never worked very well. My question is this, what has been this groups experience on how to set the ports for the maximum bandwith. We are using a combination of Cat 5 Cat 3 cables. Any advice would be appreciated. thanks Mike Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=64482t=64482 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: 10 half or 100 full [7:64482]
Mike Momb wrote: very well. My question is this, what has been this groups experience on how to set the ports for the maximum bandwith. We are using a combination of Cat 5 Cat 3 cables. Any advice would be appreciated. CAT3? Ouch. If you can't be *very* sure which cable run is what (CAT3 vs. CAT5), forcing everything to 10/Full is as good as it's going to get, because CAT3 won't support 100Mbps. Which also makes autonegotiation A Very Bad Idea, as that will happily negotiate 100Mbps over CAT3, even when it does what it's supposed to. Regards, Marco. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=64486t=64482 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: 10 half or 100 full [7:64482]
Well, first off, don't expect 100Mbps out of Cat 3. Here's the scoop with speed/duplex settings: If both ends are on auto, they will negociate the best setting that they (as a couple) are capable of. So if you connect a 10/100 NIC to a 10/100 switchport and both are on auto, you will get 100-Full. There is one problem with autodetection, which only occurs when one end of a connection is set to auto and the other is forced to Full duplex (regardless of speed). If you have one end on auto and the other forced to (either 10 or 100) Full Duplex, you will end up with a duplex mismatch (i.e. the side on auto will fail down to Half-duplex, so you end up with one end at Half and one at Full). This would definitely cause slowness that you describe. It's tricky at first because you have link lights, you have connectivity, and can even ping things, but I've seen file transfers that would take 3 minutes take over an hour because of a duplex mismatch. The best solution for this is to make a decision and stick to it: 1) Set all switchports and NICs on end devices to autodetect (the only problem being it may attempt 100Mbps over a Cat3 cable) or 2) Force all switchports and NICs to the desired speed AND duplex. This method gives you control over which devices go which speed (i.e. you can have devices using Cat3 doing 10Mbps while devices using Cat5 you can set at 100Mbps). As far as suggestions, if you aren't connecting to hubs in any way, I'd recommend setting your duplex to Full. There no reason not to. Here's a link (that I found a long time ago and have held on to since I can't seem to find it again using Cisco's search) that has some good information on Ethernet Autonegotiation. http://www.cisco.com/warp/public/473/46.html#why_do_auto HTH, Mike W. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=64487t=64482 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: 10 half or 100 full [7:64482]
Hi Mike, What I'd recommend is to go to all Cat 5 ASAP. In the meantime set either 10full or 100full depending on the cable and NIC type. It is always better that Auto. JoeT Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=64491t=64482 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: 10 half or 100 full [7:64482]
yes cat3 can be used for 100base, but only wih 100baseT4 and chances are that the cards in your workstations are only TX. so its safer to run 10base over cat3 cabling. scott Mike Momb wrote in message news:[EMAIL PROTECTED] To all, I know this subject has been talked about on a workstation level but I want to ask it on a network level. We recently replaced our Nortel network with Cisco switches and we seem to have a slowness level across the network at certain times. We have a raging debate on what speed to set the NIC cards and switches. Some folks say set the switches and PCs at 10mb half duplex and others say set them at 100mb full duplex and still others say auto on both ends should work. It has been my experience that auto has never worked very well. My question is this, what has been this groups experience on how to set the ports for the maximum bandwith. We are using a combination of Cat 5 Cat 3 cables. Any advice would be appreciated. thanks Mike Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=64520t=64482 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: 10 half or 100 full [7:64482]
Never tried this, but I am assuming that if you attempt 100M across CAT3, you would see errors accumulate on the switch port at a pretty substantial rate??? If that is the case, I would initially set everything to auto-detect and watch the switch port statistics. After a little while, I would think it would be clear which were the problem ports. You could then go through and hard code them to 10-full and all other to 100-full on both ends. Easiest of course would be just to set everything to 10-full. Depends on need I suppose... Charles -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of M.C. van den Bovenkamp Sent: Wednesday, March 05, 2003 7:39 AM To: [EMAIL PROTECTED] Subject: Re: 10 half or 100 full [7:64482] Mike Momb wrote: very well. My question is this, what has been this groups experience on how to set the ports for the maximum bandwith. We are using a combination of Cat 5 Cat 3 cables. Any advice would be appreciated. CAT3? Ouch. If you can't be *very* sure which cable run is what (CAT3 vs. CAT5), forcing everything to 10/Full is as good as it's going to get, because CAT3 won't support 100Mbps. Which also makes autonegotiation A Very Bad Idea, as that will happily negotiate 100Mbps over CAT3, even when it does what it's supposed to. Regards, Marco. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=64547t=64482 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
