Voice VLAN

[ybelal]

Hi

we are using rel 7.1 omni pcx enterprise. more then 5000 extensions. now we want to deploy IP phones. phones will be distributed among many buildings and many existing data vlan ( by cisco) are there already. should we use one single voice vlan for the whole network and all these ip phones or we should use different voicle vlan? which is the best practice?

Thanks

[Mr T]

You can use the same vlan even if you use different IP subnets in the different locations. I would recommend keeping it simple.

[ybelal]

i have read in cisco and in some other places also that for best practice, sould not span one vlan over the whole network. to manage multiple voice vlan along with all data vlan among the whole network is a huge task. more advice on this issue would be very helpful for me.

[minhduc158]

Hi all ! I'm a new member. Everyone hopes to share experiences

[usmanikf]

Hi Bilal Saab,

Good start, better to have different Voice Vlan buiding/dept wise as you are segregating the traffic. yes there is lot of administrative burden on Network administrators and also if you can have multiple domains for IP phones on oxe

[freedom]

You should handle the voice vlan the same as a new data vlan.
Best method is to use one voice vlan per building/floor, depending on the number of ip-phones in a building/floor.
Keep the number of phones below 256-512, just to be sure a possible broadcast storm doesn't effect all of your IPT users.

You need some additional management for this, but in that way you can keep your administration logical.
Find the most logical way to manage the voice vlan for your environment. If you only have one data vlan per building, also create one for voice with a 'logical' vlan-id e.g. data vlan 10 - voice vlan 110

Success!