Symptom

Issue 1 : In this case, an optic is slotted, the device shows that it is slotted, but it never shows in inventory and the output of show hw-module subslot tran idprom is empty (but no error is given). looking at the iomd logs 07/20 16:44:19.491 [ether-if-module]: [30822]: (ERR): ACK was not received during i2c writebus=0, i2c_addr=51, offset=7d, data=0, reg_val=3 07/20 16:44:19.491 [ether-if-module]: [30822]: (ERR): I2C write failure I2C_ADDR(51) Reg(7d) Val(0) 07/20 16:44:19.492 [iomd]: [30822]: (ERR): OPTICS: TenGigabitEthernet0/0/27 Failed to write 07/20 16:44:19.492 [xcvr]: [30822]: (ERR): TenGigabitEthernet0/0/27: dev_xcvr init failed 6 Issue 2:In this issue, when a device is upgraded from ES1 to ES5, during the reboot it will recognize the optic as inserted, but will fail to initialize the optic. The output of ?show hw-module subslot tran idprom? will return the message ?Transceiver initialization failed: Unable to display idprom? sh hw-module subslot 0/0 transceiver 26 idprom Transceiver initialization failed: Unable to display idprom Iomd logs show the following message at the time of initialization failure. 05/31 19:02:20.932 [xcvr]: [30849]: (ERR): xcvr_check_compatibility:TenGigabitEthernet0/0/26 rate mismatch optics 0x0, suppo

Conditions

Using Champion tengig SFPs

Workaround

Re slotting the SFPs , Power Cycle , Reload For issue 1 in some scenarios there might not be a workaround.

Further Problem Description