- Written by Radu Handolescu
- Posted on 3月 3, 2023
- Updated on 3月 31, 2023
- 1269 Views
Common Management Interface Specification (CMIS) defines, starting with revision 4.0, a standard mechanism for managing the firmware of compliant transceivers. This mechanism allows for transceivers’ firmware to be updated without having to remove the transceiver from the switch. Firmware updates may be necessary in a testing or production environment to resolve potential firmware bugs. Some transceivers may also support firmware management operations in a hitless manner (without impacting traffic).
- Written by Alex Volinsky
- Posted on 9月 11, 2023
- Updated on 9月 11, 2023
- 157 Views
Coherent transceivers, compliant with Coherent Common Management Interface Specification (C-CMIS) maintain two sets of thresholds to detect and report two types of link degradation: FEC excessive degrade (FED) and FEC detected degrade (FDD).
- Written by Radu Handolescu
- Posted on 9月 17, 2021
- Updated on 9月 17, 2021
- 3104 Views
Common Management Interface Specification (CMIS) compliant transceivers are configured by selecting an
- Written by Brian Schuette
- Posted on 6月 5, 2023
- Updated on 6月 9, 2023
- 564 Views
In an optical transceiver, electrical signals leaving the switch are converted to optical signals in the transmit path. Optical signals arriving at the transceiver are converted to electrical signals that enter the switch in the receive path. At the point of conversion, an automatic decision can be made to turn off (squelch) output when the input level drops below a certain threshold of usability (usually, LOS condition.) This is referred to as automatic squelching.