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Appendix B
Configuring the Catalyst 1900 Switch
Configuration revision: 0
Maximum VLANs supported locally: 1005
Number of existing VLANs: 5
VTP domain name : lammle
VTP password : todd
VTP operating mode : Server
VTP pruning mode : Disabled
VTP traps generation : Enabled
Configuration last modified by: 0.0.0.0 at
00-00-0000 00:00:00
Todd1900EN#
The preceding switch output shows the VTP domain, the VTP password,
and the switch's mode.
Adding to a VTP Domain
You need to be careful when adding a new switch into an existing domain.
If a switch is inserted into the domain and has incorrect VLAN information,
the result could be a VTP database propagated throughout the internetwork
with false information. Cisco recommends that you delete the VTP database
before adding a switch to a VTP domain.
Earlier in this appendix, I showed you how to delete the NVRAM on the
1900 switch. However, this does not delete the VTP configuration on the
switch, because VTP information has its own NVRAM. To delete the VTP
information configured on a 1900 switch, you must use the delete vtp
command. The following switch output shows how to delete the VTP
NVRAM database.
Todd1900EN#delete ?
nvram NVRAM configuration
vtp Reset VTP configuration to defaults
Todd1900EN#delete vtp
This command resets the switch with VTP parameters set to
factory defaults.
All other parameters will be unchanged.
Reset system with VTP parameters set to factory defaults,
[Y]es or [N]o?yes
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