AW: [suse-security] Auto Negotiation with 8.0 (OT)
Hello Ziggy,
i know this is not a security related thing but i am having a problem getting my suse 8.0 auto negotiating
i tried setting the speed for my Nic using mii-tool but it failed to recognise the Interface(eth0). Is there another way i can get my Nic to negotiate at a particular speed. So what do you want? Do you want your NIC to auto-negotiate its speed, as you said in the first paragraph, or do you want to set it to a fixed speed, as you said in the second paragraph?
Auto-negotiate means: the NIC finds out which speed the opposite NIC can do, and then sets its own speed to the same speed as the opposite NIC. Normally, you connect your computer to a hub or switch. If the hub or switch can do 100 MBit/sec, the NIC of your computer will set to 100 MBit/sec. If the hub or switch can do only 10 MBit/sec, the NIC will set to 10 MBit/sec. That's called auto-negotiation and should be the default for most NICs. For the NICs from 3Com, for example, always existed a DOS based configuration program. Boot your computer to DOS and start the configuration program to enable or disable auto-negotiation or set the NIC to a fixed speed. But I don't know if other vendors offer also such a tool. Well, most operating systems nowadays should also be able to configure the NIC. I can set the speed of my Win2k machine in the properties of "My network places", but how to do this under Linux, I never tried out. :-( Best regards Uli -- Ulrich Roth IMPACT Business & Technology Consulting GmbH Im Mediapark 8 / KölnTurm D-50670 Koeln Phone +49-221-93 70 80-29 Fax +49-221-93 70 80-15 E-Mail: roth@impact.de
On Friday 09 August 2002 10:49 am, Ulrich Roth wrote:
Hello Ziggy,
i know this is not a security related thing but i am having a problem getting my suse 8.0 auto negotiating
i tried setting the speed for my Nic using mii-tool but it failed to recognise the Interface(eth0). Is there another way i can get my Nic to negotiate at a particular speed.
So what do you want? Do you want your NIC to auto-negotiate its speed, as you said in the first paragraph, or do you want to set it to a fixed speed, as you said in the second paragraph?
Auto-negotiate means: the NIC finds out which speed the opposite NIC can do, and then sets its own speed to the same speed as the opposite NIC. Normally, you connect your computer to a hub or switch. If the hub or switch can do 100 MBit/sec, the NIC of your computer will set to 100 MBit/sec. If the hub or switch can do only 10 MBit/sec, the NIC will set to 10 MBit/sec. That's called auto-negotiation and should be the default for most NICs. For the NICs from 3Com, for example, always existed a DOS based configuration program. Boot your computer to DOS and start the configuration program to enable or disable auto-negotiation or set the NIC to a fixed speed. But I don't know if other vendors offer also such a tool. Well, most operating systems nowadays should also be able to configure the NIC. I can set the speed of my Win2k machine in the properties of "My network places", but how to do this under Linux, I never tried out. :-( Best regards Uli
In addition to this, please be aware that there are lots of hubs/switches/network cards that are unable to auto-negotiate correctly. I have to manually set all my nics because they won't negtiate with a load of CISCO equipment.... -- Thanks Andrew McCall Internet System Administrator I.C.T. Division Oldham MBC Civic Centre West Street Oldham OL1 1UU Tel : 0161 911 3990 Fax : 0161 911 3998 Email : it.andrew.mccall@oldham.gov.uk ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. www.oldham.gov.uk **********************************************************************
participants (2)
-
Andrew McCall
-
Ulrich Roth