topic Re: ISW 16802 8-port PoE - problem transceiver in ExtremeSwitching (EXOS/Switch Engine) https://community.extremenetworks.com/t5/extremeswitching-exos-switch/isw-16802-8-port-poe-problem-transceiver/m-p/61111#M17736 <FIGURE><span class="lia-inline-image-display-wrapper" image-alt="61bc406d56a8485da38417198b220a4f_7a5d7c20-7a7e-4446-a6b2-b4c38afa0fd3.png"><img src="https://community.extremenetworks.com/t5/image/serverpage/image-id/485i18BC0E33E4EEEF3A/image-size/large?v=v2&amp;px=999" role="button" title="61bc406d56a8485da38417198b220a4f_7a5d7c20-7a7e-4446-a6b2-b4c38afa0fd3.png" alt="61bc406d56a8485da38417198b220a4f_7a5d7c20-7a7e-4446-a6b2-b4c38afa0fd3.png" /></span></FIGURE><P>According to 1000BaseLX specs, -3dbm is the max receive power.</P><P><A href="https://documentation.extremenetworks.com/pluggable/GUID-36DC6B60-A015-470E-8EB6-3ACE8F4F75F6.shtml" target="_blank" rel="nofollow noreferrer noopener">https://documentation.extremenetworks.com/pluggable/GUID-36DC6B60-A015-470E-8EB6-3ACE8F4F75F6.shtml</A></P><P>At -1.93dbm you are exceeding that value...</P> Thu, 14 Jan 2021 00:06:06 GMT Ludovico_Steven 2021-01-14T00:06:06Z ISW 16802 8-port PoE - problem transceiver https://community.extremenetworks.com/t5/extremeswitching-exos-switch/isw-16802-8-port-poe-problem-transceiver/m-p/61110#M17735 <P>Hey,</P><P>i have in my network 30 switch ISW 16802. And now 1 switch give this alarm:</P><P>ID5657 [EXTREME-512-4F] DDMI-RX_POWER_CHANGED: DoM Rx Power changed to HI WARN on Interface GigabitEthernet ¼</P><P>What is problem? It depends by transceiver? Transceiver’s vendor is OEM. But i verified the status of transceiver and your data is ok:</P><P>Vendor&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : OEM<BR />Part Number&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : SFP1G-LX-31<BR />Serial Number&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : C2002049642<BR />Revision&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; :<BR />Date Code&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : 2019-02-28<BR />Transceiver&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; : 1000BASE_LX</P><P>DDMI Information<BR />++ : high alarm, +&nbsp; : high warning, -&nbsp; : low warning, -- : low alarm.<BR />Tx: transmit, Rx: receive, mA: milliamperes, mW: milliwatts.<BR />==========================================================================<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; current&nbsp;&nbsp; High Alarm&nbsp;&nbsp; High Warn&nbsp;&nbsp;&nbsp; Low Warn&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Low Alarm<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Threshold&nbsp;&nbsp;&nbsp; Threshold&nbsp;&nbsp;&nbsp; Threshold&nbsp;&nbsp;&nbsp;&nbsp; Threshold<BR />-------------&nbsp; --------&nbsp; ----------&nbsp;&nbsp; ----------&nbsp;&nbsp; ----------&nbsp;&nbsp;&nbsp; --------<BR />Temperature(C) 31.019&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 90.000&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 85.000&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -40.000&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -45.000<BR />Voltage(V)&nbsp;&nbsp;&nbsp;&nbsp; 3.2562&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3.7950&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3.4650&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3.1350&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2.8050<BR />Tx Bias(mA)&nbsp;&nbsp;&nbsp; 15.832&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 100.000&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 95.000&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0.000&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0.000<BR />Tx Power(dBm)&nbsp;&nbsp; -6.14&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -1.50&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -2.00&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -10.00&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -10.50<BR />Rx Power(dBm)&nbsp;&nbsp; -1.93 +&nbsp;&nbsp;&nbsp;&nbsp; -1.50&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -2.00&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -26.02&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -26.58</P><P>CAn you help me?</P><P>&nbsp;</P> Tue, 12 Jan 2021 21:43:02 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/isw-16802-8-port-poe-problem-transceiver/m-p/61110#M17735 Ghezzi_Alberto 2021-01-12T21:43:02Z Re: ISW 16802 8-port PoE - problem transceiver https://community.extremenetworks.com/t5/extremeswitching-exos-switch/isw-16802-8-port-poe-problem-transceiver/m-p/61111#M17736 <FIGURE><span class="lia-inline-image-display-wrapper" image-alt="61bc406d56a8485da38417198b220a4f_7a5d7c20-7a7e-4446-a6b2-b4c38afa0fd3.png"><img src="https://community.extremenetworks.com/t5/image/serverpage/image-id/485i18BC0E33E4EEEF3A/image-size/large?v=v2&amp;px=999" role="button" title="61bc406d56a8485da38417198b220a4f_7a5d7c20-7a7e-4446-a6b2-b4c38afa0fd3.png" alt="61bc406d56a8485da38417198b220a4f_7a5d7c20-7a7e-4446-a6b2-b4c38afa0fd3.png" /></span></FIGURE><P>According to 1000BaseLX specs, -3dbm is the max receive power.</P><P><A href="https://documentation.extremenetworks.com/pluggable/GUID-36DC6B60-A015-470E-8EB6-3ACE8F4F75F6.shtml" target="_blank" rel="nofollow noreferrer noopener">https://documentation.extremenetworks.com/pluggable/GUID-36DC6B60-A015-470E-8EB6-3ACE8F4F75F6.shtml</A></P><P>At -1.93dbm you are exceeding that value...</P> Thu, 14 Jan 2021 00:06:06 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/isw-16802-8-port-poe-problem-transceiver/m-p/61111#M17736 Ludovico_Steven 2021-01-14T00:06:06Z Re: ISW 16802 8-port PoE - problem transceiver https://community.extremenetworks.com/t5/extremeswitching-exos-switch/isw-16802-8-port-poe-problem-transceiver/m-p/61112#M17737 <P>Thank you very much Ludovico!</P><P>I’ll control the fiber patch or transceiver both of this device&nbsp; and of the one with which it is connected.</P><P>hi</P><P>&nbsp;</P> Tue, 19 Jan 2021 18:20:39 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/isw-16802-8-port-poe-problem-transceiver/m-p/61112#M17737 Ghezzi_Alberto 2021-01-19T18:20:39Z