| Stop logging messages break the conf command in console |
Router(config)#line con 0
Router(config-line)#logging synchronous |
| Stop logging messages in console at all |
Router(config)#no logging console |
| Stop router from querying DNS for unknown "names" |
Router(config)#no ip domain-lookup |
| Set a console password to cisco |
Router(config)#line con 0
Router(config-line)#login
Router(config-line)#password
cisco |
| Set a telnet password |
Router(config)#line vty 0 4
Router(config-line)#login
Router(config-line)#password
cisco |
| Stop console timing out |
Router(config)#line con 0
Router(config-line)#exec-timeout 0 0 |
| Set the enable password to cisco |
Router(config)#enable password cisco |
| Set the enable secret password to peter. This password overrides the enable password and is encypted
within the config file |
Router(config)#enable secret peter |
| Enable an interface |
Router(config-if)#no shutdown |
| To disable an interface |
Router(config-if)#shutdown |
| Set the clock rate for a router with a DCE cable to 64K |
Router(config-if)clock rate 64000 |
| Set a logical bandwidth assignment of 64K to the serial interface |
Router(config-if)bandwidth 64
Note that the zeroes are not missing |
| To add an IP address to a interface |
Router(config-if)#ip addr 10.1.1.1 255.255.255.0 |
| To enable RIP on all 172.16.x.y interfaces |
Router(config)#router rip
Router(config-router)#network 172.16.0.0 |
| Disable RIP |
Router(config)#no router rip |
| To enable IRGP with a AS of 200, to all interfaces |
Router(config)#router igrp 200
Router(config-router)#network 172.16.0.0
|
| Disable IGRP |
Router(config)#no router igrp 200 |
| Static route the remote network is 172.16.1.0, with a mask of 255.255.255.0, the next hop is 172.16.2.1, at
a cost of 5 hops
|
Router(config)#ip route 172.16.1.0 255.255.255.0 172.16.2.1 5 |
| Disable CDP for the whole router |
Router(config)#no cdp run |
| Enable CDP for he whole router |
Router(config)#cdp run |
| Disable CDP on an interface |
Router(config-if)#no cdp enable |
Cisco Router Show
Commands |
| View version information |
show version |
| View current configuration (DRAM) |
show running-config |
| View startup configuration (NVRAM) |
show startup-config |
| Show IOS file and flash space |
show flash |
| Shows all logs that the router has in its memory |
show log |
| View the interface status of interface e0 |
show interface e0 |
| Overview all interfaces on the router |
show ip interfaces brief |
| View type of serial cable on s0 |
show controllers 0 (note the space between the 's' and the '0') |
| Display a summary of connected cdp devices |
show cdp neighbor |
| Display detailed information on all devices |
show cdp entry * |
| Display current routing protocols |
show ip protocols |
| Display IP routing table |
show ip route |
| Display access lists, this includes the number of displayed matches |
show access-lists |
| Check the router can see the ISDN switch |
show isdn status |
| Check a Frame Relay PVC connections |
show frame-relay pvc |
| show lmi traffic stats |
show frame-relay lmi |
| Display the frame inverse ARP table |
show frame-relay map |
Cisco Router Basic
Operations |
| Enter privileged mode |
enable |
| Return to user mode from privileged |
disable |
| Exit Router |
Logout or exit or quit |
| Recall last command |
up arrow or <Ctrl-P> |
| Recall next command |
down arrow or <Ctrl-N> |
| Suspend or abort |
<Shift> and <Ctrl> and 6 then x |
| Refresh screen output |
<Ctrl-R> |
| Autocomplete Command |
TAB |
Cisco Router Copy Commands
|
| Save the current configuration from DRAM to NVRAM |
copy running-config startup-config |
| Merge NVRAM configuration to DRAM |
copy startup-config running-config |
| Copy DRAM configuration to a TFTP server |
copy runing-config tftp |
| Merge TFTP configuration with current router configuration held in DRAM |
copy tftp runing-config |
| Backup the IOS onto a TFTP server |
copy flash tftp |
| Upgrade the router IOS from a TFTP server |
copy tftp flash |
Cisco Router Debug
Commands |
| Enable debug for RIP |
debug ip rip |
| Enable summary IGRP debug information |
debug ip igrp events |
| Enable detailed IGRP debug information |
debug ip igrp transactions |
| Debug IPX RIP |
debug ipx routing activity |
| Debug IPX SAP |
debug IPX SAP |
| Enable debug for CHAP or PAP |
debug ppp authentication |
| Switch all debugging off |
no debug all undebug all |
VirtualBox Environment Creator Documentation 
