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Beginner

Why IP phone need to know its VLAN information?

Why IP phone need to know its VLAN information?

5 REPLIES 5
Rising star

Re: Why IP phone need to know its VLAN information?

The IP phones doesn't need to know the voice vlan, but it's best practice and good design to separate data and voice traffic in different vlans.

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Enthusiast

Why IP phone need to know its VLAN information?

With help of VLAN information, phone will communicate within network (DHCP and TFTP), so VLAN information is very necessary for the phone to get registered and work ready.

Rising star

Re: Why IP phone need to know its VLAN information?

The phone can very well register on the data vlan, as long as the option 150 is supplied by DHCP. But as I wrote before, it's not a good design and certainly not best practice to do so.

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Beginner

Re: Why IP phone need to know its VLAN information?

Thanks for your replies..

please explain me why it is not a good design to do that

Rising star

Why IP phone need to know its VLAN information?

There are many reason for why this is a best practice, security would be one reason, maybe the most important one. Easier setup of QoS another. Please read the CUCM SRND to get more answers about best practice for design of a CUCM system.

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