https://community.extremenetworks.com/t5/extremecloud-iq-site-engine/nms-links/m-p/21785#M1339 Hi Ryan, thanks for your repply, Mon, 18 Jun 2018 21:16:00 GMT Jefferson_Lemos 2018-06-18T21:16:00Z https://community.extremenetworks.com/t5/extremecloud-iq-site-engine/nms-links/m-p/21783#M1337 Hi all, NMS does not show links between devices after being configured, after some time the links disappear, any idea of what may be happening? The version of NMS is 8.1.2.59.<BR /> Wed, 18 Apr 2018 11:35:00 GMT https://community.extremenetworks.com/t5/extremecloud-iq-site-engine/nms-links/m-p/21783#M1337 Jefferson_Lemos 2018-04-18T11:35:00Z https://community.extremenetworks.com/t5/extremecloud-iq-site-engine/nms-links/m-p/21784#M1338 Hello,<BR /> <BR /> We've seen this behavior is a device has been modeled multiple times using different management IP addresses, or if one of the discovery protocols provides incorrect information and overwrites what we've learned with another protocol.<BR /> <BR /> How Extreme Management Center creates links: <BR /> <BR /> <A href="https://gtacknowledge.extremenetworks.com/articles/Q_A/How-do-MAP-views-from-OneView-create-links" target="_blank" rel="nofollow noreferrer noopener">https://gtacknowledge.extremenetworks.com/articles/Q_A/How-do-MAP-views-from-OneView-create-links</A><BR /> <BR /> How to debug the links: <BR /> <BR /> <A href="https://gtacknowledge.extremenetworks.com/articles/How_To/How-to-debug-LLDP-and-LLDP-map-links-in-Extreme-Management-Center" target="_blank" rel="nofollow noreferrer noopener">https://gtacknowledge.extremenetworks.com/articles/How_To/How-to-debug-LLDP-and-LLDP-map-links-in-Ex...</A><BR /> <BR /> How to limit discovery protocols if you find that one is providing incorrect data: <BR /> <BR /> <A href="https://gtacknowledge.extremenetworks.com/articles/How_To/How-to-Limit-the-Discovery-Protocols-Used-by-Network-Monitor-Cache" target="_blank" rel="nofollow noreferrer noopener">https://gtacknowledge.extremenetworks.com/articles/How_To/How-to-Limit-the-Discovery-Protocols-Used-...</A><BR /> <BR /> Maps issues are difficult to diagnose, I would suggest creating a ticket with GTAC.<BR /> <BR /> Thanks<BR /> -Ryan Mon, 18 Jun 2018 18:04:00 GMT https://community.extremenetworks.com/t5/extremecloud-iq-site-engine/nms-links/m-p/21784#M1338 Ryan_Yacobucci 2018-06-18T18:04:00Z https://community.extremenetworks.com/t5/extremecloud-iq-site-engine/nms-links/m-p/21785#M1339 Hi Ryan, thanks for your repply, Mon, 18 Jun 2018 21:16:00 GMT https://community.extremenetworks.com/t5/extremecloud-iq-site-engine/nms-links/m-p/21785#M1339 Jefferson_Lemos 2018-06-18T21:16:00Z