Mangment vlan

[yogesh1]

Dear Team,

I just need to create one management vlan so I can assign ip to switches so can you please suggest how can we create management vlan in cisco 3750 its my core switch.

[Bernhard82]

 just create a Switch virtual interface with the following commands and than add the Mangement vlan as your native vlan to all trunk interface 

Vlan #

name Mangement

exit

interface vlan #

description Management

Ip address #.#.#.# subnet mask

interface g#/#

switchport trunk encapsulation dot1q

switchport mode trunk

switchport trunk native vlan #

switchport trunk allowed vlans #,#,#

[yogesh1]

Dear Bernhard82,

Please let me know what  is the use of below command.

switchport trunk native vlan #

[EduardR]

The native VLAN is something that the IEEE 802.1Q trunking protocol describes as part of the protocol, and its just a VLAN in wich all traffic sent and received on an interface that is configured for 802.1Q won’t have a tag on its Ethernet frame.

Thats it, if you have configured a native vlan 10, all the frames that arrives in that VLAN and that need to traverse a trunk port, will have its tag removed and pass like it was an access port. All the other VLAN will be tagged normally.

You can see more about it here: https://networklessons.com/switching/802-1q-native-vlan-cisco-ios-switch/