I have some X8 and X670 switches with installed SR and LR transievers
Media Type : SF+_SR
Vendor Name : OPNEXT, INC.
Part Number : TRS2001EN-0006
Serial Number : 1334A-17101
Wavelength ...
Thank you for this links, but i not found there any information about OPNEXT or SumitomoElectric or other vendors of optics that are compatible/certified to use with Extreme swicthes.
Thank you guys, i understand that it is internal behaviour. Should think about another possible ways for monitoring ip reachability, may be tcl for example.