300-115 question 137 discussion


Which VTP mode is needed to configure an extended VLAN, when a switch is configured
to use VTP versions 1 or 2?

  • A. transparent
  • B. client
  • C. server
  • D. Extended VLANs are only supported in version 3 and not in versions 1 or 2.
Created 5 months, 4 weeks ago by weyden


D is not correct. VTP version 1 and 2, given as configured in the question, also support extended vlans if the VTP mode is transparent. If D is the expected answer then Cisco is being really misleading and also simply wrong.


"In VTP versions 1 and 2, when you configure extended-range VLANs on the switch, the switch must be in VTP transparent mode. VTP version 3 also supports creating extended-range VLANs in client or server mode." https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3560/software/release/12-2_52_se/configuration/guide/3560scg/swvtp.html


VTP version 1 and version 2 support only normal-range VLANs (VLAN IDs 1 to 1005). Cisco IOS Release 12.2(52)SE and later support VTP version 3. VTP version 3 supports the entire VLAN range (VLANs 1 to 4094). Extended range VLANs (VLANs 1006 to 4094) are supported only in VTP version 3


A: my first answer was wrong, the correct answer is A because In VTP versions 1 and 2, the switch must be in VTP transparent mode when you create extended-range VLANs.


D: Extended vlans are supported only in VTP version 3




D: in cisco new IOS sofware releases, you can only use VTPv3 to configure extended Vlans.