Transit Vlan

[opnineopnine]

Hello,

Can someone explain when en how to use and configure a transit vlan?

thanks all

401

[Reza Sharifi]

Hi,

Transit vlan is usually used between 2 or more devices? If for example you have 2 or 3 devices connected together and you want to have layer-3 connectivity between them you configure a transit vlan among them with IP on each device.

HTH

[opnineopnine]

Hello all,

Please let me know if I get this, this is ok? should I add some other thing?

R1

int vlan 10
ip add 192.168.1.1
no shut

R2

int vlan 10
ip add 192.168.1.2
no shut

417

[Reza Sharifi]

Hi,

If you are trying to add this, you need the mask as well.  For example:

int vlan 10
ip add 192.168.1.1 255.255.255.0
no shut

R2

int vlan 10
ip add 192.168.1.2 255.255.255.0
no shut

HTH

[opnineopnine]

Hi,

Yes I ,just forgot to add the mask, but should I add some thing more ? because for me this is only a simple SVI.

I dont understand how will this convert in a transit vlan.

thanks

471

[Reza Sharifi · Accepted solution]

Hi,

There is no such thing as converting a vlan to transit vlan.

Transit vlan is just a name. You can call it whatever you want.  If this vlan is connecting 2 switches together, you can give it a description like"transit vlan between sw1 and sw2"

Transit vlan is just like another vlan, but is is not used for users, printer, phones, etc... but rather for connecting devices together.

HTH

[Joseph W. Doherty]

Disclaimer

The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.

Liability Disclaimer

In no event shall Author be liable for any damages wha2tsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.

Posting

Consider RTR1(192.168.1.1)GE0<p2p ethernet>GE0(192.168.1.2)RTR2

When we don't have a direct link, you might do something like

RTR1(192.168.1.1)GE0<>GE1(VLAN9)SW1(VLAN9)GE2<>GE0(192.168.1.2)RTR2

VLAN9, on SW1, is a transit VLAN (often transit VLANs are be dedicated to only carrying transit traffic).