RE root/Juniper
PFE root/no

root@vqfx-re# edit protocols lldp

{master:0}[edit protocols lldp]
root@vqfx-re# set interface all

{master:0}[edit protocols lldp]
root@vqfx-re# commit confirmed
configuration check succeeds
commit confirmed will be automatically rolled back in 10 minutes unless confirmed
commit complete

# commit confirmed will be rolled back in 10 minutes
{master:0}[edit protocols lldp]
root@vqfx-re# commit
configuration check succeeds
commit complete

protocols {
    lldp {
        interface all;

root@vqfx-re# run show lldp neighbors
Local Interface    Parent Interface    Chassis Id          Port info          System Name
xe-0/0/0           -                   02:05:86:71:9e:00   xe-0/0/0           vqfx-re
xe-0/0/1           -                   02:05:86:71:9e:00   xe-0/0/1           vqfx-re     

below is the ip address of em1 connecting to it's Packet Forwarding Engine (PFE) @
do not eliminate these 169 addresses.

root@vqfx-re# run show interfaces em1 | match Dest
        Destination: 169.254.0/24, Local:, Broadcast:

root@vqfx-re# run ping
PING ( 56 data bytes
64 bytes from icmp_seq=0 ttl=64 time=5.397 ms
64 bytes from icmp_seq=1 ttl=64 time=7.496 ms
64 bytes from icmp_seq=2 ttl=64 time=4.219 ms
--- ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max/stddev = 4.219/5.704/7.496/1.355 ms