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VLAN configuration information needed

We are experiencing VOIP phone issues that we just can’t seem to pinpoint. We’ve poured over the phone settings and can’t seem to find the culprit there. Some (not all) phones reboot a couple of times a day without warning. I have run pings to numerous phones, switches, printers and computers and when the phones drop, PCs and printers stay solid. There are some POE switch ping drops, but not to the degree as the phone drops and no rhyme or reason to what switch may drop a couple pings and what phones stay up or go down. Our phone vendor believes that a VLAN for the phones would be the path we should take. Below are some questions about how best to set it up.
  1. The majority of the POE switches are Netgear GS752TPv2 (layer 2/3) and the majority of data switches are Netgear GS752TS. They have the out of the box configuration where VLAN 1 has all ports as untagged.
  2. If we set up a VLAN 2 for the phones, I believe we would mark all the ports with phones as Untagged. The uplink ports would be Tagged as VLAN 1 and VLAN2 so they can see both regular network traffic on 1 and phone traffic on 2.
  3. Would I have to configure switch ports to systems (Mitel) that dish out the phone details and other computers that do call recording as both VLAN 1 & 2 also? Should they be on the POE switches with the phones even though they don’t require power?
  4. Currently the phones get their IPs via DHCP, would they still be able to see the DHCP servers since the phones would be on V2 or do the DHCP servers also need to be tagged as V1 & V2?
Thanks for your advice!
* VLANVoice Over IPSwitches / Hubs

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Philip Elder
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Is the firmware up to date on all of the switches?

NETGEAR has a default VOIP VLAN setup in them at the 10GbE level. I'm not sure of their other models. IIRC the QoS (Quality of Service) settings are also there to give VOIP the priority it needs.
Avatar of arnold
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Where is the PBX?
Does the router have a qos to prioritize h.323, SIP, port 5060 bandwidth reservation.....

how many switches, the interconnection using spf+ links, redundant?

are the ones having issues have the same path, on the same switch, or along the same path?
Switches / Hubs
Switches / Hubs

A switch is a device that filters and forwards packets of data between LAN segments. Switches operate at the data link layer or the network layer of the Open Systems Interconnection (OSI) Reference Model and therefore support any packet protocol. LANs that use switches to join segments are called switched LANs or, in the case of Ethernet networks, switched Ethernet LANs. A hub is a connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports; when a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.

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