IOS: Create a new VLAN

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Create VLAN[edit]

Reference document

Delete VLAN[edit]



conf t
interface vlan999
ip address 10.10.xx.1
interface vlan199 
ip address
Bad mask /24 for address

Solution: Change ip at

%Failed to create VLANs 1555
Extended VLAN(s) not allowed in current VTP mode.
%Failed to commit extended VLAN(s) changes.
ip address 10.x.x.1
% 10.x.x.0 is assigned as a secondary address on VlanXXX

Related commands[edit]

See also[edit]