Routing:
Routing is a process of moving the data (packets) through an inter network. Routing performs the two basic tasks.
· Define the paths for a packet and then forward the packets on the basis of defined paths.
· Routing can also be defined as the communication between two or more logically and physical networks and packet transfer is brought by a router.
Router Commands Overview:
We can learn about
· Router commands
· Configurations
· Privileged mode commands
· Routing protocols
· Cisco labs
· Network configurations
Keyboard Shortcuts
| CTRL-N | -show next command |
| CTRL-P | -show previous command |
| SHIFT-CTRL-6 | -Break |
Configuring the Router
| sh running-config | -details the running configuration file (RAM) |
| sh startup-config | -displays the configuration stored in NVRAM |
| setup | -Will start the automatic setup; the same as when you first boot the router |
| config t | -use to execute configuration commands from the terminal |
| config mem | -executes configuration commands stored in NVRAM; copies startup-config to running-config |
| config net | -used to retrieve configuration info from a TFTP server |
| copy running-config startup-config | -copies saved config in running config (RAM) to NVRAM or "write memory" for IOS under ver.11 |
| copy startup | -copies from non-volatile (NVRAM) to current running config (RAM) |
| boot system flash <put file filename here> | -tells router which IOS file in flash to boot from |
| boot system tftp | -tells router which IOS file on the tftp server to boot from |
| boot system rom | -tell router to boot from ROM at next boot |
| copy flash tftp | -Copies flash to tftp server |
| copy tftp flash | -Restores flash from tftp server |
| copy run tftp | -Copies the current running-config to tftp server |
| copy tftp run | -Restores the running-config from tftp server |
General Commands
| no shutdown | -enables the interface |
| reload | -restarts the router |
| sh ver | -Cisco IOS version, uptime of router, how the router started, where system was loaded from, the interfaces the POST found, and the configuration register |
| sh clock | -shows date and time on router |
| sh history | -shows the history of your commands |
| sh debug | -shows all debugging that is currently enabled |
| no debug all | -turns off all debugging |
| sh users | -shows users connected to router |
| sh protocols | -shows which protocols are configured |
| banner motd # Your customized message here # | -Set/change banner |
| hostname <give router name> | -use to configure the hostname of the router |
| clear counters | -clear interface counters |
To be continued..
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