Explanation
According to this question, uRPF is running in strict mode because packets are dropped even when that route exists in the routing table. Maybe packets are dropped because the receiving interface is different from the interface the local router uses to send packets to that destination.
The ip verify unicast source reachable-via rx command enables Unicast RPF in strict mode.
To enable loose mode, administrators can use the any option (ip verify unicast source reachable-via any). In loose mode, it doesn't matter if we use this interface to reach the source or not.

The allow-default option allows the use of the default
route in the source verification process.

Explanation
vty 0:
+ cisco
+ 0csic
vty 1:
+ no username
+ no password
The command "aaa authentication login default none" means no authentication is required when access to the device via Console/VTY/AUX so if one interface does not specify another login authentication method (via the "login authentication ..." command), it will allow to access without requiring username or password. In this case VTY 1 does not specify another authentication login method so it will use the default method (which is "none" in this case).

Explanation
Label Switch Router 1. Reads labels and forwards the packet based on the based on the label.
2. Performs PHP
Label Edge Router: 1 Assigns labels and unlabeled packets.
2. Handles traffic between multiple VPNs

The -logging console|| is a default and hidden command.