Missing LLDP entries in the cisco NX 9000 switch

[akiran]

I have a software application sending LLDP packets through a physical port. The adapter firmware is also sending LLDP packets through the same physical port. Here is the problem:

When I check the LLDP neighbor entries on the Cisco NX 9000 switch, I see only one entry. I expect to see both the entries - one sent by the application and the other sent by adapter firmware. However, I see only the entry corresponding to the packet sent by adapter firmware .

Below is the output on cisco NX9000 switch :

sw-cisco92300# show lldp  neighbors interface Eth1/21
Capability codes:
  (R) Router, (B) Bridge, (T) Telephone, (C) DOCSIS Cable Device
  (W) WLAN Access Point, (P) Repeater, (S) Station, (O) Other
Device ID            Local Intf      Hold-time  Capability  Port ID
9803.9b01.b21a       Eth1/21         48                     9803.9b01.b21a
Total entries displayed: 1

[M02@rt37]

Hello @akiran 

Make sure that the LLDP packets being sent by the software application and the adapter firmware are not being sent at the same time. If they are, the packets may be colliding with each other and causing only one of them to be detected by the switch. You can adjust the packet frequency for the software application and the adapter firmware to avoid this issue.

Also, try to disable the "LLDP hold time" feature on the switch, as this can sometimes cause issues with LLDP packet detection.

[akiran]

Thanks for your quick response and valuable suggestions. I will try and let you know what happens.
Is this problem because of not enabling lldp multi-neighbor feature on the switch ?

My switch version is old 9.1 and doesn't have the lldp multi-neighbor option.

[M02@rt37]

Hello @akiran 

Yes it should be that, you're right.

Is it possible for you to upgrade your switch?

[akiran]

HI M02@rt37 

Our switch model is. :

cisco Nexus9000 C92300YC

Is NX-OS 10.1(1) supported on this switch model ? Also , how to upgrade the switch ? Is there any URL or Link for upgradation ?

Thanks for your quick responses. Really appreciate all your help !

Regards