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Appendix B
Configuring the Catalyst 1900 Switch
Todd1900EN#ping 172.16.10.10
Sending 5, 100-byte ICMP Echos to 172.16.10.10, time out
is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max
0/2/10/ ms
Todd1900EN#telnet 172.16.10.10
^
% Invalid input detected at '^' marker.
In the Telnet example above, notice the error when I tried to telnet from
the 1900 switch. The command is not available on the 1900 switch. How-
ever, remember that you can telnet into a switch at any time, as long as IP is
configured correctly.
Erasing the Switch Configuration
The switch configuration is stored in NVRAM, just as any router. You can-
not view the startup-config, or contents of NVRAM. You can only view
the running-config. When you make a change to the switch's running-
config, it automatically copies the configuration on the switch to NVRAM.
This is a big difference from a router, where you have to type copy
running-config
startup-config. That option is not available on the
1900 switch.
You can delete the configuration in NVRAM on the 1900 switch if you
want to start over on the switch's configuration. To delete the contents of
NVRAM on a 1900 switch, use the delete nvram command.
Notice in the following switch output that there are two options: nvram
and vtp. I want to delete the contents of NVRAM to the factory default
settings.
Todd1900EN#delete ?
nvram NVRAM configuration
vtp Reset VTP configuration to defaults
Todd1900EN#delete nvram
This command resets the switch with factory defaults.
All system parameters will revert to their default
factory settings. All static and dynamic addresses
will be removed.
Reset system with factory defaults, [Y]es or [N]o? Yes
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