X460G2-48x-10G4 SFP Ports behavior not expected, are in active state without a link plugged.

[Sergio_Galvez]

Hi,

X460G2-48x-10G4
Version summitX-22.4.1.4-patch1-2

I have a physical ports issue with my new Extreme Stack topology (2 slots); the master slot (Switch 1) is showing a NON-expected behavior on SFP electrical ports, when the Switch boots up after a reboot, all the enabled ports become ACTIVE, I don't have any link plugged to those electricals SFP, that means that the switch has NOT to show the led ON, and has NOT to show the port as ACTIVE neither,

-At this point all the port LEDs with electrical SFP are GREEN ON, if you plugg a cable and connect the other side to a laptop, the port is able to came UP and forward traffic.
-If the electrical SFP is removed the port goes DOWN; if the SFP is plugged back the port remains DOWN, if you connect then a cable the port NEVER goes UP, till you reboot the stack. after the reboot the behavior is the same. the port is UP untill you manually shut down or remove the SFP physically, otherwise it keeps ACTIVE.

In the Switch Slot2 the behavior is as expected, after the Stack reboot, the enabled ports initate as READY state and do not become ACTIVE till any cable is inserted on. The same behavior with the LED.

sh log:

* Slot-1 SSMSCBVT01.3 # sh log
05/24/2018 10:59:37.94 Slot-1: Unable to retrieve DRAM uncorrectable errors
05/24/2018 10:59:37.94 Slot-1: Unable to retrieve DRAM correctable errors
05/24/2018 10:59:37.94 Slot-1: Unable to retrieve L2 cache uncorrectable errors
05/24/2018 10:59:37.94 Slot-1: Unable to retrieve L2 cache correctable errors
05/24/2018 10:59:37.94 Slot-1: Unable to retrieve L1 cache uncorrectable errors
05/24/2018 10:59:37.94 Slot-1: Unable to retrieve L1 cache correctable errors
05/24/2018 10:59:35.70 Slot-1: Port Mgmt-1 link UP at speed 1 Gbps and full-duplex
05/24/2018 10:59:31.20 Slot-1: Failed to send SNTP request to server 10.90.95.50
05/24/2018 10:59:16.12 Slot-1: Previous message repeated 3 additional times in the last 15 second(s)
05/24/2018 10:59:13.27 Slot-1: shid_ctrl_ioctl:6023 shidGbicReadI2CNb() returned -145
05/24/2018 10:59:13.19 Slot-1: Reading of DDMI data failed on the optical module in port 1:24.
05/24/2018 10:59:13.19 Slot-1: summitCardPortGetTransceiverInfoSfp: Unable to read DDMI info from Transceiver for port 1:24

05/24/2018 10:59:13.19 Slot-1: summitReadSfpEepromDdmi: error reading i2cdev 0x51 nbytes 128

05/24/2018 10:59:13.19 Slot-1: summitReadI2CDevMem: Read DevMem Failed for Gbic eeprom on port 24:
shidFd 14 rc -1 bytes read 128

05/24/2018 10:59:13.09 Slot-1: shid_ctrl_ioctl:6023 shidGbicReadI2CNb() returned -145
05/24/2018 10:59:13.09 Slot-1: shid_ctrl_ioctl:6023 shidGbicReadI2CNb() returned -145
05/24/2018 10:59:13.09 Slot-1: summitbcmReadGbicEeprom: Failed open fd=-1 errno=24(Too many open files) open file name(/dev/s450/gbicp24)

05/24/2018 10:59:13.09 Slot-1: Reading of DDMI data failed on the optical module in port 1:23.
05/24/2018 10:59:13.09 Slot-1: summitCardPortGetTransceiverInfoSfp: Unable to read DDMI info from Transceiver for port 1:23

05/24/2018 10:59:13.09 Slot-1: summitReadSfpEepromDdmi: error reading i2cdev 0x51 nbytes 128

05/24/2018 10:59:13.09 Slot-1: summitReadI2CDevMem: Read DevMem Failed for Gbic eeprom on port 23:
shidFd 14 rc -1 bytes read 128

05/24/2018 10:59:12.99 Slot-1: summitbcmReadGbicEeprom: Failed open fd=-1 errno=24(Too many open files) open file name(/dev/s450/gbicp23)

[Stephane_Grosj1]

Hi,

are these Extreme SFP? I have already seen weird issue with low-end 3rd party SFP on reboot: they are not reliable. Sometimes you can wonder if the CAPEX saving was worth it, OPEX can be way bigger than expected...

[Sergio_Galvez]

I solved this issue with several reboots till the Slot-1 recognized the SFPs. Something a lot strange, but now is running, as expected.

Thanks anyway 

[Sushruth_Sathya]

Hi Sergio,

I think it would be best for you to open a case for GTAC to investigate