01-23-2013 09:27 AM - edited 03-07-2019 11:16 AM
Hi,I have hardcoded 1GB ports on 3750X to 1000 and full duplex for all servers connected. THe ports are not coming up with this speed and duplex settings. If I configure them to 100, I am able to see the port is up.Whereas if i connect the same servers to 2950 switches, i can see the ports working fine with 1000 speedHas anyone faced this situation before....we have tried with the latest universal IOS as well
01-23-2013 09:52 AM
Hi,
What is the part number for the Gig SFP?
HTH
01-23-2013 12:23 PM
Hi Reza,
1000Base-T - RJ-45 for
01-23-2013 12:34 PM
Hi,
If you do a
sh interfaces transceiver pro
does it show the port as 10/100/1000?
see example below
Name : Gi1/0/3
Administrative Speed: auto
Administrative Duplex: auto
Administrative Auto-MDIX: on
Administrative Power Inline: enable
Operational Speed: auto
Operational Duplex: auto
Operational Auto-MDIX: on
Media Type: 10/100/1000BaseTX
HTH
01-23-2013 01:50 PM
I have hardcoded 1GB ports on 3750X to 1000 and full duplex for all servers connected. THe ports are not coming up with this speed and duplex settings. If I configure them to 100, I am able to see the port is up.
I know exactly what this is all about. You mentioned this is a copper link, right? Well Ethernet is composed of four pairs of wire strand. Pair "D" controlls GigabitEthernet and if this is short or faulty, you won't get GigabitEthernet.
The fastest way to test is to run a TDR line test.
01-23-2013 02:16 PM
Leo, But this is with all our cables/servers. The switches,servers, cables are brand new cat6
Reza, I would find out and let you know. I am working remote.
01-24-2013 01:31 PM
Leo, But this is with all our cables/servers. The switches,servers, cables are brand new cat6
Sorry, I've heard of this line before. I have seen brand new cables, directly from the factory, with bad termination.
Give it a try. Please prove me wrong.
01-24-2013 03:23 PM
Also Try Using Negotiation Auto under the interface and see what its geotiates to.
If this Dont solves that 3 Option to try
Change branded cable
Check Cable distance between swich and Server .Try reduring it if poffible
Try using another Port of the swich to confirm SFP is perfectly fine
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