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  #1  
Old March 20th, 2008
rsb3's Avatar
rsb3 Offline
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Join Date: February 2008
Posts: 5
1000 full reverts to auto

Running AIX 5.3 ML07, cisco 3650 set to 1000/full and p51a set to 1000/full. entstat -d en0 shows
Media Speed Selected: 1000 Mbps Full Duplex
Media Speed Running: 1000 Mbps Full Duplex

After reboot it shows
Media Speed Selected: Auto negotiation
Media Speed Running: 1000 Mbps Full Duplex

lsattr -El ent0 shows
media_speed 1000_Full_Duplex Media speed True

Is the reading of entstat after the reboot a false reading?
Does anyone know of any issues in this area?

Thanks.

Last edited by rsb3; March 20th, 2008 at 10:10. Reason: title / description added
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Old March 21st, 2008
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Join Date: March 2007
Posts: 205
Re: rsb3

Nothing to worry about, working as designed and to specification.

For GB ethernet adapters there is no such thing as forcing it to 1000FD, the standard only accepts / defines autonegotiate. What AIX does, because the autonegotiation standards are rubbish, is to autonegotiate, but only allows an autonegation speed of what you selected, 1000FD. After the reboot it is just being honest and admiting it really just autonegotiated at the only option it would accept.
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