eSight Discovers a Link Between Two Devices Not Directly Connected

Created: Mar 22, 2016 22:57:02Latest reply: Mar 22, 2016 22:57:02 1251 1 0 0 0

An S2700 switch is connected to an S7706 switch through a USG firewall. LLDP is enabled and SNMP parameters are correctly configured on the three devices. eSight discovers a direct link between the S2700 and S7706 in the network topology.

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Rickymoon Created Mar 22, 2016 22:44:36

Possible Causes
This problem may occur if configurations on the intermediate device between two indirectly connected devices are incorrect.

Run the display lldp neighbor brief command on the S2700. The command output shows that the S7706 is the neighbor of the S2700. The USG firewall transparently transmits LLDP link discover packets from the S2700. As a result, eSight discovers a direct link between the S2700 and S7706.

Procedure
This is a known issue on the USG firewall running the software version V300R001C00SPC800. To solve this problem, upgrade the USG software version to V300R001C00SPC900.
Suggestion and Summary
When eSight discovers a direct link between two indirectly connected devices, check the configurations on the intermediate device.

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eSight Discovers a Link Between Two Devices Not Directly Connected

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