If we set up QOS without a VLAN is it good enough for VOIP traffic?

9860 pts.
Tags:
QoS
VLAN
VLAN configuration
VLAN management
VoIP
priority over all other network traffic or do we need to setup a VLAN as well?

Software/Hardware used:
VOIP, Windows

Answer Wiki

Thanks. We'll let you know when a new response is added.

Absolutely!

The reason you would implement VLAN’s is to segment ARP, DNS and other traffic for different purposes over the same ethernet physical layer.

Really, it depends how many devices you have.
If you deploy 15 IP phones, have 6-8 simultaneous calls at most, and have another 20 PC’s and a handful of servers, there is no need for VLANning.

All you really need to provide priority to VoIP traffic is a QOS implementation on your router. See <a href=”http://itknowledgeexchange.techtarget.com/itanswers/can-we-use-a-windows-2003-server-configured-as-a-router-to-do-qos-when-the-switch-does-not-support-it”>this other discussion</a> for more on that aspect.

On the otherhand, 50 IP phones and 50 PC’s will definitely be stepping on each other’s toes as they all broadcast for DHCP, DNS, printers, getways, etc.

Keep in mind, if you do decide to introduce VLAN’s you will need all your major switches and routers to be VLAN aware.

Hope that helps.

——————-

I agree that you may not NEED to implement VLANs based on the smaller amount of users/hosts, but its a better practice to segregate voice and data altogether. Granted, you will need to ensure the VLANs are set-up properly on all routers/switches, but the extra time pays off in knowing that even if a PC NIC broadcast storms, it wont affect your voice traffic at all…

Discuss This Question:  

 
There was an error processing your information. Please try again later.
Thanks. We'll let you know when a new response is added.
Send me notifications when members answer or reply to this question.

REGISTER or login:

Forgot Password?
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Forgot Password

No problem! Submit your e-mail address below. We'll send you an e-mail containing your password.

Your password has been sent to:

To follow this tag...

There was an error processing your information. Please try again later.

REGISTER or login:

Forgot Password?
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Thanks! We'll email you when relevant content is added and updated.

Following