- Written by Radu Handolescu
- Posted on 3月 3, 2023
- Updated on 3月 31, 2023
- 5795 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 5月 21, 2019
- Updated on 6月 12, 2019
- 8467 Views
The feature allows a simulated transceiver removal, without physically touching the module. This can be used for
- Written by Etienne Morrison
- Posted on 9月 17, 2024
- Updated on 9月 18, 2024
- 205 Views
Configuration of arbitrary combinations of speeds on subinterfaces is being restricted on 800G CMIS Arista transceivers. This feature restricts configuring only uniform sets of speeds on applicable transceivers. This affects Arista-branded 800G active optical transceivers.
- Written by Dan Cunningham
- Posted on 10月 3, 2023
- Updated on 6月 18, 2024
- 6685 Views
The SFP-10G-RA-1G-LX and SFP-10G-RA-1G-SX transceivers are rate adapting SFP+ transceivers with internal clause 37 auto-negotiation (AN) support. The transceiver host interface is 10G XFI and the module rate adapts in the egress direction from 10G to 1G before transmitting data on the attached fiber. In the ingress direction it rate adapts the received 1G data to 10G before sending to the host switch. This allows 1000BASE-LX and 1000BASE-SX support on switches which do not natively support 1G operation.
- Written by Dan Cunningham
- Posted on 4月 18, 2022
- Updated on 6月 18, 2024
- 10288 Views
This feature introduces support for the SFP-10G-MRA-T SFP transceiver. This is a rate adapting transceiver, meaning it can convert the system side interface to a lower rate on the line side.
- Written by Michael Wang
- Posted on 7月 2, 2024
- Updated on 7月 2, 2024
- 871 Views
This feature introduces the ability to define matching rules to configure transceiver tuning on a switch. This is useful when a particular collection of transceivers are known to require tuning values which differ from EOS defaults.
- Written by Yunlu Yang
- Posted on 6月 11, 2021
- Updated on 6月 15, 2021
- 6152 Views
This feature adds support for viewing the Digital Optical Monitoring (DOM) parameters for the optics that support
- Written by Brian Schuette
- Posted on 6月 5, 2023
- Updated on 6月 9, 2023
- 3531 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.