10-26-2009 07:25 AM - edited 03-06-2019 08:18 AM
I never heard anyone having a problem mixing cat 5e and cat 6 with the scenario below, but I experienced it today troubleshooting a network.
Diagram 1:
Server<-Cat 5e-><-Switch-><-Cat 6->Server
Settings: auto/auto
Negotiated: 1000/full-duplex
Errors/Packet Drops: none
File Size: 300GB
Throughput: 120Mbps max.
Failure: After 90% data transferred
I found out that the cable on the other side of the switch is cat 5e so I change it to cat 6.
Diagram 2:
Server<-Cat 6-><-Switch-><-Cat 6->Server
Settings: auto/auto
Negotiated: 1000/full-duplex
Errors/Packet Drops: none
File Size: 300GB
Throughput: 200Mbps max.
Failure: none
Anyone can explain or have a link that explain why it is not allowed to mixed cat 5e and cat 6 in the above diagram 1? I know for sure that it is not allowed to mixed cat 5e and cat 6 in a patch panel/patch cord.
10-27-2009 04:32 AM
I don't see how this issue could be related to using two different cables since there is a switch in between. If the problem was corrected when you switched the cable, I would suspect a bad cable.
Did you check errors on the ports? With the NIC and switchport set to auto, did you verify that both ends negotiated to 1000/F?
10-27-2009 07:29 PM
Thats what I think also, there is a switch in between.
Your questions is already answered in my post above.
Not bad cable, this doesn't happen only between two servers, but a lot of servers in the same connection as illustrated above.
We try FTP, SFTP, Windows Share and using Cat 6 end-to-end have better throughput.
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