I have 9200 switch with TtenGigabitEthernet Transceiver Module. Connected through (not sure but will confirm tomorrow) WDM to another switch.
sh inventoryNAME: "c92xxL Stack", DESCR: "c92xxL Stack"PID: C9200L-24T-4X , VID: V01 , SN: XXXXXXXXXXX
NAME: "Switch 1", DESCR: "C9200L-24T-4X"PID: C9200L-24T-4X , VID: V01 , SN: XXXXXXXX
NAME: "Switch 1 - Power Supply A", DESCR: "Switch 1 - Power Supply A"PID: PWR-C5-125WAC , VID: V01 , SN: XXXXXXX
NAME: "Te1/1/4", DESCR: "1000BaseLX SFP"PID: GLC-LH-SMD , VID: V01 , SN: XXXXXXX
when do "sh interf tenGigabitEthernet 1/1/4"
TenGigabitEthernet1/1/4 is up, line protocol is up (connected)Hardware is Ten Gigabit Etherne
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,reliability 255/255, txload 1/255, rxload 1/255Encapsulation ARPA, loopback not setKeepalive not setFull-duplex, 1000Mb/s, link type is auto, media type is 1000BaseLX SFPinput flow-control is on, output flow-control is unsupportedARP type: ARPA, ARP Timeout 04:00:00Last input 02:06:19, output 00:00:00, output hang neverLast clearing of "show interface" counters 00:46:44Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0Queueing strategy: fifoOutput queue: 0/40 (size/max)5 minute input rate 0 bits/sec, 0 packets/sec5 minute output rate 3000 bits/sec, 5 packets/sec0 packets input, 0 bytes, 0 no bufferReceived 0 broadcasts (0 multicasts)0 runts, 0 giants, 0 throttles0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored0 watchdog, 0 multicast, 0 pause input0 input packets with dribble condition detected15565 packets output, 1179815 bytes, 0 underrunsOutput 4969 broadcasts (0 multicasts)0 output errors, 0 collisions, 0 interface resets0 unknown protocol drops0 babbles, 0 late collision, 0 deferred0 lost carrier, 0 no carrier, 0 pause output0 output buffer failures, 0 output buffers swapped out
There is output but no input. The other side has the same "there is output but no input".
The strange is, when the fiber is connected to a fiber-To-UTP converter, it works. When connecting the fiber port of the converter to the TtenGigabitEthernet of the switch, it works also.
How to find out the problem source?
Full-duplex, 1000Mb/s, link type is auto, media type is 1000BaseLX SFP
Referring to this part number, the connection is 1Gig and not a 10Gig.
As mentioned in "Cisco Catalyst 9200 Series Switches Hardware Installation Guide"
4x10G ports that support either 1G SFP or 10G SFP+ modules.
And it works when it is connected to the converter. Show interface is up.
I don't know if it is a matter in the power of the received signal or something else.
I will try a command to display the received power.
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