Commands Used in This Chapter
391
Command
Description
copy run start
Copies the running-config file to the startup-
config
file
copy run tftp
Copies the running-config file to a TFTP host
copy tftp flash
Copies a file from a TFTP host to flash memory
copy tftp run
Copies a configuration from a TFTP host to the
running-config
file
Ctrl
+
Shift
+
6, then X (keyboard
combination)
Returns you to the originating router when you
telnet to numerous routers
delete nvram
Deletes the contents of NVRAM on a 1900 switch
disconnect
Disconnects a connection to a remote router from
the originating router
erase startup-config
Deletes the contents of NVRAM on a router
exit
Disconnects a connection to a remote router via
Telnet
ip domain-lookup
Turns on DNS lookup (which is on by default)
ip domain-name
Appends a domain name to a DNS lookup
ip host
Creates a host table on a router
ip name-server
Sets the IP address of up to six DNS servers
no cdp enable
Turns off CDP on an individual interface
no cdp run
Turns off CDP completely on a router
no ip domain-lookup
Turns off DNS lookup
no ip host
Removes a hostname from a host table
o/r 0x2142
Changes a 2501 to boot without using the contents
of NVRAM
ping
Tests IP connectivity to a remote device
show cdp
Displays the CDP timer and holdtime frequencies
show cdp entry *
Same as show cdp neighbor detail, but does not
work on a 1900 switch
show cdp interface
Shows the individual interfaces enabled with CDP
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