The value of vRtrLdpGenPropagatePolicy determines whether the
LSR should generate FECs and which FECs it should generate.
When the value of this object is 'system', LDP will distribute
label bindings only for the router's system IP address
When the value of this object is 'interface', LDP will distribute
label bindings for all LDP interfaces
When the value of this object is 'all', LDP will distribute label
bindings for all prefixes in the routing table
When the value of this object is 'none', LDP will not distribute
any label bindings.
This value is only applicable to LDP interfaces and not for
targeted sessions.