(You can run the "pwd" and "dir" commands on the Versatile Routing Platform (VRP) to view file information in the current directory.)
By referring to the network structure and OSPF areas shown in the figure, it can be determined that all routers on the network except RTA are ABRs.
telnetlib is a module provided by Python to implement the Telnet protocol.
In a broadcast address, all host bits are set to 1, and a broadcast address can be used as a host address.