Cisco VLAN 設定提示

1. VLAN Pre-requisite Step:

Before you create VLANs, you must decide whether to use VTP in your network. Using VTP, you can make configuration changes centrally on one or more switches and have those changes automatically communicated to all the other switches in the network. Without VTP, you cannot send information about VLANs to other switches.

VTP only learns about normal-range VLANs (VLAN IDs 1 to 1005). Extended-range VLANs (VLAN IDs greater than 1005) are not supported by VTP or stored in the VTP VLAN database

VTP Server: (Default Mode)
VLAN Config. are saved in NVRAM
VTP Client:
VTP Transparent:
doesn't participate in VTP
doesn't advertise its VLAN configuration and doesn't sync its VALN
VLAN Configuration based on received advertisements.
***:
The switch must be in VTP transparent mode when you create extended-range
VLANs


**
When the switch is in VTP transparent mode, the VTP and VLAN configurations are saved in NVRAM, but they are not advertised to other switches. In this mode, VTP mode and domain name are saved in the switch running configuration, and you can save this information in the switch startup configuration file by using the copy running-config startup-config privileged EXEC command