Enabling LLDP can aid in understanding network and system topologies, I am very much in favor of running it and largely dismiss the perceived security issues surrounding it, when done correctly and with full knowledge of what it is being enabled.
Enable LLDP on a SROS based Nokia (formerly Alcatel-Lucent). It is per physical port, so replace 1/1/1 with your physical port and replicate on every port you want it to run on
/configure port 1/1/1 ethernet lldp dest-mac nearest-bridge tx-mgmt-address system
/configure port 1/1/1 ethernet lldp dest-mac nearest-bridge tx-tlvs port-desc sys-name sys-cap sys-desc
/configure port 1/1/1 ethernet lldp dest-mac nearest-bridge admin-status tx-rx
Enable LLDP on a Juniper is by interface or global
set protocols lldp advertisement-interval 30
set protocols lldp interface all
Mikrotik switch to LLDP as the discovery protocol in 6.something. MNDP/LLDP is on by default but can be changed by configuring the discover-interface-list
/ip neighbor discover-interface-list
Brocade VDX. This is a little dated but I suspect it’s still correct.
conf t
protocol lldp
hello 180
advertise dcbx-tlv
advertise optional-tlv management-address
advertise optional-tlv port-description
advertise optional-tlv system-capabilities
advertise optional-tlv system-description
advertise optional-tlv system-name
system-name dnoc960-sw1-mgmt
system-description Brocade VDX switch
exit
copy running-config startup-config
Ubuntu / Debian Linux
apt install lldpd
service lldpd start