Summary
81
Notice that when you type erase all and press Enter, it just starts erasing
the flash and you can't break out of it. By doing a show flash command,
you can see that the contents of flash are now empty. You might not want to
try this on your production switches. You can use the copy tftp flash
command to reload the software.
1900 IOS-Based Switch
To delete the contents of NVRAM on a 1900 switch, use the delete
NVRAM
command. VLAN Trunk Protocol configuration is not deleted by
using delete VRAM because it has its own NVRAM. You need to use the
command delete vtp to clear the VTP configuration:
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
Summary
T
his chapter covered the different types of Ethernet you can use in an
internetwork as well as the distance each type of Ethernet media can run. It's
important to remember what you learned here.
Remember that the distance that 10BaseT can run and be within specifi-
cation is 100 meters (330 feet). The 100 meters includes the following:
Five meters from the switch to the patch panel
Ninety meters from the patch panel to the office punch-down block
Five meters from the punch-down block to the desktop connection
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