The main advantage of running a loop back interface with OSPF enabled on the router is that there is minimal cost. The IP address will also remain stable in this set up.
loop back never goes down, helps maintaining adjacency of routers if used with routing protocols
The main advantage of using this is remote access on the network.
The interface is configured as a DCE device.
The SFP can be added or removed without affecting operations, thus allowing for customization and future upgrades.
router> enablerouter# configure terminalrouter(config) interface serial (interface number)router(config-if) no shutdownrouter(config-if) endrouter#substitute (interface number) for the actual int number.. eg serial 0/1you can find the number of the interface by using show interfaces from privileged mode
the sfp will be capable of higher throughputs
The wireless is not enabled on the router or the SSID is not being broadcasted. Both of these setting are in the router configuration. I would recommend calling the router manufacturer and have them help you enable the wireless, it's different for each model. Your desktop PC works because it's probably using a wired connection, which is enabled by default. Wireless is not usually enabled by default.
router(config-if)#
The initial configuration of a router can typically be performed using a console connection. This involves connecting a computer or terminal directly to the router's console port using a serial cable. Through this connection, administrators can access the router's command-line interface to set up basic configurations. Alternatively, some routers may also support configuration via a web interface using an Ethernet connection, but the console connection is the most common for initial setups.
A 4-port WiFi router is just a router that has four WIRED ethernet ports in addition to its WIRELESS 802.11 interface. This would allow you to share a single WIRED internet connection between 4 computers using ethernet cables, in addition to many other computers using the WiFi interface and no cables.
a serial interface on a router is basically used for WAN communications. we generally connect to other routers through internet using serial interface. In a lab scenario we generally emulate WAN connections by connecting the serial interfaces of the routers using a cable called DCE/DTE cable.
A CLI router, or Command Line Interface router, is a network device that enables the routing of data packets between different networks and devices using command-line commands for configuration and management. Users interact with the router's operating system through a text-based interface, allowing for precise control over routing protocols, security settings, and network configurations. CLI routers are commonly used in enterprise environments for their flexibility and efficiency in network management.