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I'm pulling my hair out on a simple issue, and I could use some advice. Thank you, in advance.I've got a core 4510 switch with 2 12-port 10GE SFP+ modules and my closet has a stack of 3 3850-48p with 2 4-port C3850-NM-2-10G modules.I'm using 4 SFP...
This is great advice and it took a while, but i eventually came back to it. In the process, I discovered that I've got on bad SFP so support replaced it. But that wasn't the problem. The patch cable was crossed from the factory. I disassembled th...
Yes it is the correct sup, and yes they are Cisco optics. SFP-10Gb-SR to be exact. I don't have any other 10Gb etherchannels in use, but i do have several 1Gb channels configured. I have four other individual 10Gb links, but i'm using 10Gb-LR and 1...
I've removed the interfaces from the etherchannel and tried cross looping. On the 4510 I get no indication from the LEDs. On the 3850 I get immediate indication on the LEDs.One might conclude, Cisco support included, that the SFPs on the 4510 side ...
