Where you see it: Many vendors log a specific mismatch when the SFP reports a different expected speed/type (e., a 10G SFP+ in a port locked to 1G). What it means: The transceiver 's EEPROM indicates a different class (speed, media type) than the port accepts, or the. Optical transceiver issues rarely fail in dramatic ways. Most of the time they appear as inconsistent links, intermittent errors, unexplained flaps, or ports that simply refuse to come up. In multi-vendor environments, that usually means one thing: the compatibility chain is broken somewhere. OptiX OSN9800 U64, Board Y2G210 at slor 1,2 with the same optical module and 17-29 slot Y1L402 having the same optical modules are having the alarm LASER_MODULE_MISMATCH 1. Log on the U2000, open the NE panel, and select the "path view" configuration: 2. Try to delete the logical port which has the. This type of optical module failure mainly includes port not UP, port status is UP but do not receive or send messages, port frequently up or down and CRC error. Specific troubleshooting methods and solutions for optical modules are as follows: 1. Therefore, understanding common optical module. After inserting an optical module, the switch interface indicator does not light up, and the link cannot communicate normally.
