Verifying Basic configuration of Router
All the basic router configuration commands are stored in the running configuration file. The running configuration file is stored in RAM. To verify all the basic command of running configuration we use the show running-config command -
Router# show running –config
After using this command the running configurations is entered in RAM, it is must save the running configuration file into NVRAM.to show the configuration next time when router is bootup or resart,saving command into NVRAM is-
Router# copy running-config startup-config.
The show running-config command displays the current running configuration that is stored in the RAM and the show startup- config command, displays the startup configuration file stored in NVRAM.To display the startup config, we use the command-
Router# show startup-config
The show ip route command-
This command displays the routing that IOS is currently using to select the best path to its destination network.
Router# show ip route
The show interfaces command-
This command displays all the interface configuration parameters-
Router# show interfaces
The show ip int brief command-
This command displays interface configuration information, including IP address, subnet mask and interface status whether it is up or down-
Router# show ip int brief
When the router interfaces is configured with an IP address and subnet mask, that interface become a host to that network. When any PC is configured with a host IP address and the subnet mask then PC uses the subnet mask to determine which network it belong to and this operation is done by the operating system. After the router interfaces are activated with no shutdown command, the interface receives a signal from another device and then that interface considered as up status. When the interface is up the network of that interface is added to the routing table as a directly connected network.
The router only know abort its own directly connected before configure any static and the dynamic routing .These are the network that are displayed in the routing table until static and dynamic routing is configured and without the directly connected network static and dynamic routing cannot entered in the routing table.
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