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).

The 400GBASE ZRP (also known as ZR+) is a transceiver that follows the OpenZR+ MSA (Multi Source Agreement)

Common Management Interface Specification (CMIS) compliant transceivers are configured by selecting an

This TOI details the following feature additions:. Support of 4x100G mode for the 400GBASE ZR transceivers