[CAUSE] A vRtrLdpNgAddrFecCommMismatch notification is generated when two or more peer routers advertising labels for the given address FEC have been assigned differing communities, or some have been assigned communities and some have not. It will also be generated if multiple LDP peer routers have been configured to advertise their local LSR-ID as a FEC, and those peer routers have been assigned differing communities. This notification is rate-limited to at most one notification every 60 seconds. [EFFECT] This condition indicates that the network is misconfigured, and it is likely that the affected address FEC is not being advertised to the routers which the operator intends. [RECOVERY] Analyze, check and fix the community configuration for all LDP session-parameters and LDP targeted-session peer-templates in the network to find the error. Start with the configuration on the router generating the notification, and if this is correct, look next at the routers advertising the labels to see if their configuration is correct.