Why Isn't My USG FLEX H Showing Proper Connection in Nebula Topology?
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Zyxel_Kay
Posts: 1,279
Zyxel Employee





in Other Topics
Scenario and Background
Network administrators may encounter challenges mapping device connections in Nebula topology with USG FLEX H firewalls. The primary issue stems from the Link Layer Discovery Protocol (LLDP), which is crucial for automatically discovering and visualizing network device relationships.
Solution
To resolve connectivity issues:
- Access the USG FLEX H web configurator
- Go to System > Advanced > Additional Features
- Enable the LLDP function
- Apply the configuration
More Information
Kay
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