https://community.extremenetworks.com/t5/extremeswitching-exos-switch/extreme-x870-or-x590-support-for-100gbps-er4-40km-qsfp28-optics/m-p/75052#M19244 <P>Hello,</P> <P>I don’t see the 100G ER4 optics officially supported on the Extreme X870 or X590/690. Has anybody tried and could let me know about their experience?</P> Tue, 28 Apr 2020 02:05:13 GMT Swen_Wulf 2020-04-28T02:05:13Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/extreme-x870-or-x590-support-for-100gbps-er4-40km-qsfp28-optics/m-p/75052#M19244 <P>Hello,</P> <P>I don’t see the 100G ER4 optics officially supported on the Extreme X870 or X590/690. Has anybody tried and could let me know about their experience?</P> Tue, 28 Apr 2020 02:05:13 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/extreme-x870-or-x590-support-for-100gbps-er4-40km-qsfp28-optics/m-p/75052#M19244 Swen_Wulf 2020-04-28T02:05:13Z