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Machete44601

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CAD Workstations connected through VoIP Phones - Throughput/QoS Concerns and Questions

Hello - Work for a small company and we're opening a new/second office.  Long story short - without the politics - I'm being brought in to spin up the network in the new location after someone else already started to piece one together who has limited to no networking background/knowledge.

5-6 Polycom VVX300s phones.  The person who started wants to use the PC port on the phones for the user's computers.  For 'regular' web/email/office functions I don't have an issue with this - but my concern comes to the user workstations running AutoCAD and 3D modeling files (StudioMax/vRay/Lumion) over the network from the file server.

I have great data network experience, but limited experience with integrating VoIP.  How do these play together in the real world?  I was planning on using a managed switch with Vlan to segregate the network traffic and also use the switches QoS features.

Just need some input before I plug things in and leave to avoid complaints after I've been gone for a few days.
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Ernie Beek
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Machete44601

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Awesome - thank you Ernie.  I was suspicious of running 3D modeling through a phone.  And since you mentioned that, I had seen that issue (10/100 only) mentioned about phones in the past and failed to look at the specs of the Polycom's.  

The whole network is 1Gb, so I'll run a 2nd drop to each workstation, no issue.  I just didn't want to make-work due to my lack of knowledge.

One follow-up question based on your response - i follow your overall logic about VLANs - but if I'm assigning VLANs by port on the switch, and if there's a PC behind the phone, wouldn't that PC traffic get rolled in with the voice VLAN since they both home run to that port on the switch?
My pleasure.

To answer your question: yes it would. If the switch has no option to configure a voice VLAN, everything will go over the VLAN configured on the switchport. Needless to say that isn't an ideal situation.