We are looking to isolate our VoIP traffic to its own VLAN. For a number of reasons, we'd like this to happen without needing to configure each phone. It looks like Netgear switches support this. Unfortunately, the documentation is scattered and in many cases outdated. I'm hoping some folks here can show me where we're going wrong. Goals:Voice VLAN = 88.Ports 1-44 set to untagged VLAN 1 and VLAN 88. Default to 1 unless MAC address prefix matches a VoIP device.Ports 45-46 are for router for Voice-VLAN and has no access to VLAN 1.Ports 47-48 are for router normal VLAN (1) and has no access to VLAN 88.Ports 49-52 are uplinks and should carry traffic for both VLANs.The phone should be able to operate in pass-through mode, and devices behind them should default to VLAN 1 as they normally would. Currently I am facing two issues: When I plug in a phone with matching MAC prefix, it is not being pushed to VLAN 88.I'm unable to outright disable Voice-VLAN (88) on ports 47-48. I'll add some screenshots of the current config in a follow-up post. Hopefully some kind network admin will take a look and be able to spot where I'm going wrong.

Hello davidcts Have no recent practical experience with that S3300 switch series. What looks right to me is that the Auto-VoIP VLAN is set to the VLAN ID 88. But then, strange is that the VLAN 88 does show up as a VLAN-Type: Static and the VLAN-Membership for VLAN 88 is set manually to [U]ntagged and the Voice-VLAN-Configuration does show Operational State: Disabled This makes me believe you have -manually- defined the VLAN 88 on top of the Voice-VLAN, manually assigning port 1/g-1 ... 1/g-52 (you don't have to do this in my understanding!) on top of what should be part of the Voice-VLAN-Config automatically once enabled. So, remove the VLAN 88 port assignments -and- the manually define VLAN 88.

I removed the manually created VLAN 88 from Switching > VLAN > Advanced > VLAN Configuration, which automatically removed any options for it from VLAN Membership. However, I do not see any way to set the Operational State to Enabled, as displayed under Switching > VLAN > Advanced > Voice VLAN Configuration. When checking Switching > Auto-VoIP > Protocol-based > Port Settings, all ports show Auto VoIP Mode as Enabled. Something still isn't correct; the phones aren't being pushed over to VLAN 88.

davidcts wrote: However, I do not see any way to set the Operational State to Enabled, as displayed under Switching > VLAN > Advanced > Voice VLAN Configuration. When checking Switching > Auto-VoIP > Protocol-based > Port Settings, all ports show Auto VoIP Mode as Enabled. Something still isn't correct; the phones aren't being pushed over to VLAN 88. Auto-VoIP Global Admin Mode enabled? Voice-VLAN Interface(s) Interface Mode set to VLAN-ID, and the Value set to 88?

This little document Auto-VoIP and LLDP-MED Guide.pdf should help.

Forum Discussion

davidcts

Aspirant

Apr 29, 2025

Auto Voice VLAN setup

We are looking to isolate our VoIP traffic to its own VLAN. For a number of reasons, we'd like this to happen without needing to configure each phone. It looks like Netgear switches support this. Unfortunately, the documentation is scattered and in many cases outdated. I'm hoping some folks here can show me where we're going wrong.

Goals:

Voice VLAN = 88.
Ports 1-44 set to untagged VLAN 1 and VLAN 88. Default to 1 unless MAC address prefix matches a VoIP device.
Ports 45-46 are for router for Voice-VLAN and has no access to VLAN 1.
Ports 47-48 are for router normal VLAN (1) and has no access to VLAN 88.
Ports 49-52 are uplinks and should carry traffic for both VLANs.
The phone should be able to operate in pass-through mode, and devices behind them should default to VLAN 1 as they normally would.

Currently I am facing two issues:

When I plug in a phone with matching MAC prefix, it is not being pushed to VLAN 88.
I'm unable to outright disable Voice-VLAN (88) on ports 47-48.

I'll add some screenshots of the current config in a follow-up post. Hopefully some kind network admin will take a look and be able to spot where I'm going wrong.

11 Replies

davidcts
Aspirant
Apr 29, 2025
- schumaku
  Guru - Experienced User
  Apr 30, 2025
  Hello davidcts
  
  Have no recent practical experience with that S3300 switch series.
  
  What looks right to me is that the Auto-VoIP VLAN is set to the VLAN ID 88.
  
  But then, strange is that the VLAN 88 does show up as a VLAN-Type: Static
  
  and
  
  the VLAN-Membership for VLAN 88 is set manually to [U]ntagged
  
  and
  
  the Voice-VLAN-Configuration does show Operational State: Disabled
  
  This makes me believe you have -manually- defined the VLAN 88 on top of the Voice-VLAN, manually assigning port 1/g-1 ... 1/g-52 (you don't have to do this in my understanding!) on top of what should be part of the Voice-VLAN-Config automatically once enabled.
  
  So, remove the VLAN 88 port assignments -and- the manually define VLAN 88.
  - davidcts
    Aspirant
    Apr 30, 2025
    I removed the manually created VLAN 88 from Switching > VLAN > Advanced > VLAN Configuration, which automatically removed any options for it from VLAN Membership.
    
    However, I do not see any way to set the Operational State to Enabled, as displayed under Switching > VLAN > Advanced > Voice VLAN Configuration. When checking Switching > Auto-VoIP > Protocol-based > Port Settings, all ports show Auto VoIP Mode as Enabled.
    
    Something still isn't correct; the phones aren't being pushed over to VLAN 88.