Voice VLAN would only work with IP Phones which can support CDP. If the IP Phones does not support CDP, I dont think it would work. You will have to configure the port as trunk port.
I'm doing the same thing.
Have a Cisco 3560-48PS-S switch with Alcatel IP phones.
I'm assuming the config would be the same as the old Cisco 3524 switches.
switchport trunk encapsulation dot1q
switchport trunk native vlan 4
switchport mode trunk
switchport voice vlan 3
Vlan 4 is the Data vlan
vlan 3 is the voice vlan
I plug my laptop in and get connected to the data vlan so I know that bit is OK.
Can anyone confirm if this is correct as I don't have an Alcatel IP phone to test with.
It will work, but I prefer access mode instead of trunk mode. I had tested both setting, both will work. together, don't forget to turn on the QOS and trust dscp.
Remark: voice vlan 60, data vlan 40
switchport access vlan 40
switchport mode access
switchport voice vlan 60
ip access-group 140 in
srr-queue bandwidth share 10 10 60 20
srr-queue bandwidth shape 10 0 0 0
mls qos trust dscp
auto qos voip trust
storm-control broadcast level 0.30
storm-control multicast level 0.50
The config you show here looks more like what is required for an cisco ip phone. The only difference being that the "auto qos voip cisco-phone" is missing.
Are you saying that config you posted works with Alcatel IP phones?
I have tested this config with alcatel phones and work wit no problems, the only thing tha you have to put is the voice vlan id in the alcatel phones.
switchport access vlan 230
switchport mode access
switchport voice vlan 410
switchport port-security maximum 3
switchport port-security violation restrict
qos trust dscp
shape percent 33
The only thing that the voice vlan do is that the port will accept 801.q traffic for that vlan id(410) in a access port.
Yes, the switchs WS-C3560G-48PS x 6 sets works fine with the Alcatel ip phone sets.
In my case, one point to share with you, the connection cable bundle with Alcatel is cat5e, if your cable structure is cat6, please don't use the cat5e cable, otherwise some ip phone sets ( long distance away from closet) cannot connect to the system. And LED of the switch port will turn on in orange colour.
The phone cannot work.
" The only thing that the voice vlan do is that the port will accept 801.q traffic for that vlan id(410) in a access port."
Now this is interesting. This is the info I was looking for a while back.
This means if I have a non-cisco ip phone (vlan 100) and PC on native vlan (1)connected to PC port on ip phone, both will work if I set Voice VLAN to 100 and leave access vlan to native. (NO NEED TO SET THE PORT TO 802.1q TRUNK , which i am currently doing).
I have 2924, 2950 switches which has IOS 12.0 and cannot enter the mls qos or qos trust commands.
The only issue is the CoS. My previous question which is still unanswered is as follows:
I have set the phone to VLAN 100 from its menu. Since the phone does not support CDP and is set to the VLAN which matches the Voice VLAN in the switch, is the Cisco switch smart enough to automatically assign a Voice CoS (default 5 i believe) to that VLAN when it sees traffic from the phone?
Are your Alcatel phones the former Avaya phones? We use Avaya phones in our network.
What we do is utilize DHCP to tell the phone which VLAN to use for tagging, and the configuration file it downloads from the TFTP server contains info for the phone to tag CoS and DSCP values. Use DHCP Option 176 to do this. PCs and other devices that don't need the Option 176 information simply ignore it.
Regarding your switches not being able to support the mls qos trust commands, these are only supported in the Enhanced Image, not the Standard Image. Certain 2950 switches support both images, while others only support the Standard Image.
We have some 2950 switches which only support the Standard Image. Since we set out CoS and DSCP values via DHCP, the ports connected to the phones are configured with:
mls qos trust cos pass-through dscp
This allows the dscp value set by the phone to be retained as the frames are switched through the 2950.
Hope this helps.
I have tested cisco voice vlan with alcatel ipphones and worked fine, you just have to put the switchport in the voice vlan and than configure the phone with that vlan, if you want you can use a alcatel feature that gives the vlan id to the phone by dhcp.