My customer is trying to connect 2 C9500-24Y4C switches together via one of the 100G ports. They are using a 3rd party version of this cable/QSFP --> QSFP-H40G-CU1M cable. Neither switch acknowledges that anything is connected to the port (see below). No log messages either. I'm thinking it's a bad cable/QSFP but customer is having the same problem with 2 of these cables.
Any thoughts on what might be the issue?
Cisco IOS XE Software, Version 17.03.04 Cisco IOS Software [Amsterdam], Catalyst L3 Switch Software (CAT9K_IOSXE), Version 17.3.4, RELEASE SOFTWARE (fc3)
Switch#sh int hundredGigE 1/0/25 HundredGigE1/0/25 is down, line protocol is down (notconnect) Hardware is not present Hardware is Hundred Gigabit Ethernet, address is c44d.8451.ebf9 (bia c44d.8451.ebf9)