115问题求助，VTP extended VLAN

gallonli

Which two statements about extended-range VLANs are true? (Choose two.)
A. Created in VTP server mode in VTP version 3.
B. Created when switch is in VTP server mode.
C. They support pruning.
D. VTP version 3 stores extended-range VLAN in VLAN database.
E. VTP version 1 and 2 stores extended-range VLAN in VLAN database.

Correct Answer: AD
Section: part8

VTP v1 v2是在vlan.dat里？3个版本应该都在startup里吧，NVRAM。
排除法的话应该是AC吧，但是没有找到extended支持pruning的资料，有没有大神解惑一下，谢谢！

h19

vtp3不修剪拓展VLAN，VTP1，VTP2也没有将VLAN信息存在NVRAM里面，只有在透明模式才是，VTP1，VTP2也不支持拓展的VLAN，就没有储存的必要了所以答案就是AD

david99022

In VTP versions 1 and 2, the switch must be in VTP transparent mode when you create extended-range VLANs.
VTP version 3 also supports creating extended-range VLANs in client or server mode -> Answer A is correct.

參考這份資料:https://www.cisco.com/c/en/us/td ... /3560scg/swvtp.html

gallonli

h19 发表于 2018-11-9 10:33
vtp3不修剪拓展VLAN，VTP1，VTP2也没有将VLAN信息存在NVRAM里面，只有在透明模式才是，VTP1，VTP2也不支持 ...

哦，那就是v1，v2的transparent模式extended VLAN是储存在NVRAM里的，而v3就储存在VLAN.DAT里了

gallonli

david99022 发表于 2018-11-9 14:25
In VTP versions 1 and 2, the switch must be in VTP transparent mode when you create extended-range V ...

恩，对A没有异议，主要是在考虑C,D

gallonli

终于找到资料了，还是得看官方文档，不能嫌麻烦啊。。。。共勉

Support for extended range VLAN database propagation—VTP version 1 and version 2 support VLANs 1 to 1000 only. In VTP version 3, the entire VLAN range is supported (VLANs 1 to 4094). The pruning of VLANs still applies to VLANs 1 to 1000 only. Extended-range VLANs are supported in VTP version 3 only. Private VLANs are supported in VTP version 3. If you convert from VTP version 3 to VTP version 2, the VLANs in the range 1006 to 4094 are removed from VTP control.

•VLANs 1002 to 1005 are reserved VLANs in VTP version 1, version 2, and version 3.

•Support for propagation of any database in a domain—In VTP version 1 and version 2, a VTP server is used to back up the database to the NVRAM and allows you to change the database information.

h19

gallonli 发表于 2018-11-11 11:05
哦，那就是v1，v2的transparent模式extended VLAN是储存在NVRAM里的，而v3就储存在VLAN.DAT里了

Extended-range VLANs are supported in VTP version 3 only   VTP v1和v2没有拓展VLAN

AlanHan

VTP version 1 and 2 stores extended-range VLAN in VLAN database.
Ans : AD