Hello:
I’m creating a small community network in Ecuador (South America), the idea is offer Internet (only internet), and internet+voip (to intercommunicate the families), but for QoS, I was thinking in use a CPE with VLAN supports, for transfer all the voice conversations via the VLAN #1, and the data in VLAN #11, and another VLAN #21 for all other uses (non QoS).
I attach the scenario, is possible to do this idea?
Thanks
How this can most easily be accomplished is by using a “Voice router” behind your CPE that can handle the QOS for the voice calls. Qos will be enabled throughout the network at any point that could be a bottleneck. (Voice Router: router/firewall that has your voice ports on it. It will have a WAN and LAN ports and possibly also wireless. It will automatically give priority to your voice traffic to try and keep the call quality as good as it can)
You will need to be quite careful about how much you over subscribe your AP wireless link as it will be difficult to control QOS on the wireless network when it gets congested.
Vlans are used to create separate layer2 domains, however if they run on the same physical network link, then Qos on your voice vlan will not be able to affect anything on your data vlan which could completely saturate your physical link and cause degraded voice quality.
So basically, use Qos aware CPE and AP. Then place “Voice router/gateway” between CPE and the customer’s data network.
Note: Some wireless systems that support polling on the wireless network can handle QOS better than a standard 802.11a/b/g wireless network. (Motorola Canopy Advantage platform is one that I have used, Mikrotik’s Nstream may also help with this, but I haven’t tested that).
Hope this wasn’t too confusing.
Thank you. I thought that if I use separate VLAN I can increase security (of the voice) and allow a better sound.
Best regards