12-14-2023 06:17 AM
I have one 3850 and 9300 switches that need to be interconnected using LAN cable.
3850 supports 100Mbps, I have interconnected using LAN cable but the link does not come up. It gets into error -disabled.
On 3850 I see a lot of input errors on uplink port and 9300 I see flow-control is unsupported error.
How do I resolve this?
12-14-2023 06:50 AM
Make sure the ports on both switches are configured with the same speed and duplex. If the 9300 port is a Gig port, ensure the 3850 is configured the same. If one side is 100Mbps, make sure the other side is the same. Most likely you are dealing with a speed mismatch on one of the switches.
HTH
12-14-2023 06:54 AM
I have tried auto for speed and duplex. 3850 switches does not accept hard coded full duplex
12-14-2023 07:11 AM
Are you using copper ports of fiber? Can you post the configs from both switches? "sh run interface g1/0/x"
and "show interface g1/0/x"
HTH
12-14-2023 07:38 AM
ErrDisable and flow-control
Can I see
Show interface
Show interface error count
MHM
12-14-2023 08:07 AM
I am attaching available output from both switches, port 24 and 45 are interconnected using LAN cable.
12-14-2023 08:10 AM
I need to see also
Show interface error count
MHM
12-14-2023 08:12 AM
Try replacing the copper cable with a different one.
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