If this is the only device you're attaching to the switch that is having this problem, you might have some kind of compatability issue with regards to autonegotiation. We usually have seen this with older network devices(~3-5 years old or so), or if you have cabling problems.
I would definitely recommend that both the end device and the switch be at the latest driver/firmware (6.0.4 is the latest for the 3024), and that you're using CAT-5 cabling that allows other devices to autonegotiate the proper speed.
Message Edited by DELL-AndrewH on 05-01-2003 02:03 PM
We had the same issue with some of our Ciso equipment, they will not even negotiate with manually set options with the powerconnect. They need to address these issues.
One possibility is the use of transformers (magnetics) that have asymmetric receive and transmit signal paths. Symmetric receive/transmit paths in the transformer are required in order to support auto-MDI/MDIX, a feature that eliminates the need for distinguishing between straight-through and crossover cables through automatic detection/correction. Many PHYs, including the Micrel (Kendin) KS8721B, support auto-MDI/MDIX.
We have performed complete interoperability testing in our lab and found that the KS8721B (on our evaluation board) and the Dell PowerConnect 3024 perform flawlessly for both auto-negotiation and extended traffic testing at all speeds and modes.
Andrew_Hicks1
2 Intern
•
169 Posts
0
May 1st, 2003 15:00
How are you attempting to uplink these devices? Fiber, Gigabit Ethernet, or Fast Ethernet?
Also, is this just a single link, or are you performing a link aggregated trunk between the two devices?
cpelliott
2 Posts
0
May 1st, 2003 16:00
Andrew_Hicks1
2 Intern
•
169 Posts
0
May 1st, 2003 18:00
If this is the only device you're attaching to the switch that is having this problem, you might have some kind of compatability issue with regards to autonegotiation. We usually have seen this with older network devices(~3-5 years old or so), or if you have cabling problems.
I would definitely recommend that both the end device and the switch be at the latest driver/firmware (6.0.4 is the latest for the 3024), and that you're using CAT-5 cabling that allows other devices to autonegotiate the proper speed.
Message Edited by DELL-AndrewH on 05-01-2003 02:03 PM
JaiA
21 Posts
0
November 22nd, 2003 17:00
ktakenaka
1 Message
0
July 6th, 2004 15:00
One possibility is the use of transformers (magnetics) that have asymmetric receive and transmit signal paths. Symmetric receive/transmit paths in the transformer are required in order to support auto-MDI/MDIX, a feature that eliminates the need for distinguishing between straight-through and crossover cables through automatic detection/correction. Many PHYs, including the Micrel (Kendin) KS8721B, support auto-MDI/MDIX.
We have performed complete interoperability testing in our lab and found that the KS8721B (on our evaluation board) and the Dell PowerConnect 3024 perform flawlessly for both auto-negotiation and extended traffic testing at all speeds and modes.
Kerry Takenaka
Product Marketing Manager, Micrel