OS10 Change advertised LLDP management address

Hello,

By default, LLDP is enabled globally, on each physical interface, and on management port.

You can disable LLDP Management Address Advertisement on the management interface:

Interface mgmt 1/1/1

    no lldp tlv-select basic-tlv management-address

Exit

To see the available TLVs which can be advertised on an interface, see page 602 of the user guide.

https://dl.dell.com/content/manual39616760-dell-smartfabric-os10-user-guide-release-10-5-6.pdf?language=en-us

@DELL-Charles R​ Thanks for the reply! I don't think I explained it very well...

The two switches use the mgmt/1/1/1 ports connected directly together as the VLT backup interface with addresses 192.168.1.1 aand 192.168.1.2 respectively. These addresses are completely non-routable in our network.

The address that is actually used for managing the switches is a SVI on vlan 90 - 10.100.10.1 annd 10.100.10.2 respectively.

There is a VLT port channel uplink to a cisco switch using ports et1/1/5 on each switch.

When you look at 'show lldp neighbour' on the cisco, it shows that the dell switches are advertising management IPs as 192.168.1.1 and 192.168.1.2 -- which is incorrect, as these addresses are non-routable and exist solely for vlt backup.

I would like to tell the switch to advertise the 10.100.10. address instead!

Hi, you might try to disable lldp management address on VLT backup. Then enable LLDP on the VLAN 90 SVI this may cause switch to advertise correct mngmnt IP. If available, global LLDP mngmnt address command is the clean way to override default behavior.

@DELL-Erman O​ Thanks, I have tried this but it does not seem to change which address is advertised via LLDP.

Hello,

some platforms may require the virtual IP to be reachable or configured on a loopback interface.

Could you share the output of show lldp neighbors detail and confirm if the virtual IP is configured on the system and reachable?