I have a 48 port Cisco 2960-X running IOS Version 15.0(2)EX5.
I'm trying to connect it to a Ubiquiti EdgeRouter4 using a Ubiquiti DAC Twinax cable..
I'm aware that this is technically not recommended, however:
It's for a homelab environment. I wouldn't do this for a production enterprise network, and I'm aware that Cisco do not recommend this, however - Cisco DACs are expensive.
When I plug the DAC in, I see the port come up in the logs, and them immediately go into an error state. Something to the effect of:
Jul 6 00:30:02.214: %GBIC_SECURITY_CRYPT-4-VN_DATA_CRC_ERROR: GBIC in port Gi1/0/50 has bad crc Jul 6 00:30:02.218: %PM-4-ERR_DISABLE: gbic-invalid error detected on Gi1/0/50, putting Gi1/0/50 in err-disable state
I've tried running following this guide which suggests running:
no errdisable detect cause gbic-invalidfollowed by:
As well as running
service internal which I found here.
to disable CRC checks and enable the use of third-party transceivers in the switch. However, I'm still getting CRC errors. It feels like there's something else I need to do to enable third party SFP transceivers.
Is there something I'm missing? Or something else I can try?