Problem with Gig Link not coming up
Bookmark this page:
 Yahoo!
 Google
 Windows Live
 del.icio.us
 digg
 Netscape
|
|
||||||||||||||||
|
Posted by Kott on October 8, 2004, 10:38 am
Please log in for more thread options I am using a Intel 82540EM Gig controller with 1 copper Port on my PC (PCI slot) . I have connected this Gig Port to my device(Broadcom) which has Gig Copper Interface and the Link does not come up. My settings are Auto Nego 1000Mbs FDX on both sides. I have observed the MII Status Registers on my device (Broadcom ) and it shows Auto Nego not completed/Error. Since I have no control on the Intel Side, wondering what could be the problem . Two possibilities are - MDI/MDIX Crossover is not happening - Master/Slave Resolution is not hapenning and it is getting to a deadlock The other observation is that when I connect two of my devices back to back the Gig Copper link is coming up. any comments from the gurus out there Thanks Kott | ||||||||||||||||
|
Posted by Mike Farnham on October 8, 2004, 1:26 pm
Please log in for more thread options Did you try that? kmatpral@yahoo.com (Kott) wrote in message | ||||||||||||||||
|
Posted by Walter Roberson on October 8, 2004, 9:04 pm
Please log in for more thread options :I thought the Gig connection needed to be FORCED to work.
In my reading of postings, the majority of people I would tend to trust have said that Gig -must- be autonegotiate according to the standards. I have, though, also seen reputable people advise to force gig connections. My conclusion from reading those messages is that either -some- gig devices are not fully standards compliant, or else that the standards left something ambiguous even though they tried to eliminate the ambiguities. -- "The human genome is powerless in the face of chocolate." -- Dr. Adam Drewnowski | ||||||||||||||||
|
Posted by Kott on October 13, 2004, 12:09 am
Please log in for more thread options roberson@ibd.nrc-cnrc.gc.ca (Walter Roberson) wrote in message
> :I thought the Gig connection needed to be FORCED to work.
> > In my reading of postings, the majority of people I would tend to > trust have said that Gig -must- be autonegotiate according to the > standards. I have, though, also seen reputable people advise to > force gig connections. > > My conclusion from reading those messages is that either -some- gig devices > are not fully standards compliant, or else that the standards left > something ambiguous even though they tried to eliminate the ambiguities. Update on this: The link did come up and the problem was that the Transmit signal Amplitude was very high. So I lowered the Tx signal amplitude from my Device and the link came up. What was happening previously was that the Link was coming up but after 20 mins or so. But if I used a longer cable then the signal was getting attentuated and link used to come up faster. From this I concluded that the Auto Nego Link code words signals were getting distorted and the the link partner was not able to decode this. So I reduced the Transmit Signal amplitude from my device and link comes up right away.I need to test it though with different cable lengths. Kott | ||||||||||||||||
| Similar Threads | Posted |
| Problem with Gig Link not coming up | October 8, 2004, 10:38 am |
| Problem with DFE-855 link locking up | July 9, 2004, 12:50 am |
| Port trunking / link aggregation problem | October 8, 2006, 9:11 am |
| A tricky problem concerned with fragmentation and Logical link Layer service. | August 5, 2007, 2:51 am |
| Packet Coming From Router Disappears | June 24, 2006, 2:45 am |
| Ethernet coming to home as Broadband with staic IP addr, can I connect Router? | May 21, 2005, 3:50 am |
| Data pkts not coming till all previous pkts are ACK'ed | November 6, 2004, 4:31 am |
| D-link dsl 300T | January 23, 2005, 11:17 pm |
| Link Up Time | March 14, 2006, 12:24 pm |
| D-Link DGE-550SX tuning. | July 20, 2004, 9:20 pm |
| D-Link DSL-500 Console Cable | October 25, 2004, 2:19 am |
| About link test pulse | October 29, 2004, 4:31 pm |
| Basic link tester | December 15, 2005, 10:19 am |
| D-LINK DFE 530TX+ with LINUX | July 10, 2006, 10:50 am |
| trying to bring up a 1000Base-X link | August 21, 2006, 3:42 pm |
> I am using a Intel 82540EM Gig controller with 1 copper Port on my PC
> (PCI slot) . I have connected this Gig Port to my device(Broadcom)
> which has Gig Copper Interface and the Link does not come up.
>
> My settings are Auto Nego 1000Mbs FDX on both sides.
> I have observed the MII Status Registers on my device (Broadcom ) and
> it shows Auto Nego not completed/Error. Since I have no control on the
> Intel Side, wondering what could be the problem .
> Two possibilities are
> - MDI/MDIX Crossover is not happening
> - Master/Slave Resolution is not hapenning and it is getting to a
> deadlock
>
> The other observation is that when I connect two of my devices back to
> back the Gig Copper link is coming up.
>
>
> any comments from the gurus out there
>
> Thanks
> Kott