Hello Halo,
Greetings!
Adding on to the previous replies.
As there is no LLDP feature in M-series, but the device can still discover the IPv6 neighbors by neighbor discovery protocol.
Neighbor discovery is a protocol that allows different nodes on the same link to advertise their existence to their neighbors, and to learn about the existence of their neighbors.
Routers and hosts (nodes) use Neighbor Discovery (ND) messages to determine the link-layer addresses of neighbors that reside on attached links and to overwrite invalid cache entries. Hosts also use ND to find neighboring routers that can forward packets on their behalf.
In addition, nodes use ND to actively track the ability to reach neighbors. When a router (or the path to a router) fails, nodes actively search for alternatives to reach the destination.
https://www.juniper.net/documentation/en_US/junos/topics/concept/neighbor-discovery-routing-overview.html
Example: Configuring IPv6 Interfaces and Enabling Neighbor Discovery
https://www.juniper.net/documentation/en_US/junos/topics/example/ipv6-neighbor-discovery.html
M120 Guide:
https://www.juniper.net/documentation/product/en_US/m120#cat=user_guides
I hope this helps. Please mark this post "Accept as solution" if this answers your query.
Kudos are always appreciated!
Best Regards,
Lingabasappa H
#LLDP#Neighbordiscover