SRW224G4P : voice vlan problem

Question

Hi guys ,
i've a problem with tagged vlan with my SRW224G4P.
I,ve got following scenario:
one cisco 2801-CCME/k9 router
one cisco small business SRW224G4P layer 2 managed switch
ten cisco IP phone 7940 and 7931
ten personal computer
I need to use the embedded switch on the phone to connect computer . I need to
have 2 separated vlan for data and voice traffic.
I configured srw224g4p first 12 ports as follows
interface ethernet 1/x
switchport allowed vlan add 199 untagged
switchport native vlan 199
switchport allowed vlan remove 1
switchport mode hybrid
switchport allowed vlan add 150 tagged
spanning-tree cost 100000
spanning-tree edge-port
where vlan 199 is for data and vlan 150 is for voice .
I set following dhcp pool on 2801
ip dhcp pool phones
network 192.168.150.0 255.255.255.0
default-router 192.168.150.1
domain-name cmedeis.local
option 150 ip 192.168.150.1
ip dhcp pool PC
network 192.168.199.0 255.255.255.0
default-router 1982.168.199.1
and configured router on a stick as follows
interface FastEthernet0/0.150
description CME interface
encapsulation dot1Q 150
ip address 192.168.150.1 255.255.255.0
interface FastEthernet0/0.199
encapsulation dot1Q 199
ip address 192.168.199.1 255.255.255.0
My problem is that phones connected to the switch ports doesn't recognize tagged
traffic and doesn't take ip of the corrected dhcp pool of 150 vlan.
With a cisco 2960 poe switch i configured switchport voice vlan 150 and
switchport access vlan 199 and all is fine but this small business switch don't
handle switchport voice attribute and i can't separate voice and data vlan .
Someone have idea how to avoid this problem?
Need some help , please.
Bye

Answer 1

Good posts as always Christopher!
As Christopher mentions you will need to hard code the voice vlan on all of the phones.  The phones will send the voice traffic via this vlan, and the PCs will send untagged traffic. 
I hope you do not mind a tangent and I hope this is not too great of a distraction, but the thought of QoS and security came to my mind as I read this post.
Besides the vlan problems, which I am sure we can get through, there is also a concern.
Any chance you would consider a 3560 for this deployment?  You have quite a few Cisco phones, a Cisco router, and many PCs. The Cisco switch would give you CDP, which would be useful for the voice vlan and power settings, as well as the important automatic QoS and security settings.
On my 3560, I applied a smart port macro.  A smart port macro is a series of best practices / command sets put into a simple to use command.  The one I applied is called cisco-phone.  Here is the output before and after:
c3560(config)#do sho run int f0/18
interface FastEthernet0/18
end
c3560(config)#int f0/18
c3560(config-if)#macr app cisco-phone
c3560(config-if)#sw voice vlan 5
c3560(config-if)#sw ac vl 1
c3560(config-if)#do sho run int f0/18
interface FastEthernet0/18
switchport mode access
switchport voice vlan 5
switchport port-security maximum 2
switchport port-security
switchport port-security aging time 2
switchport port-security violation restrict
switchport port-security aging type inactivity
srr-queue bandwidth share 10 10 60 20
srr-queue bandwidth shape  10  0  0  0
mls qos trust device cisco-phone
mls qos trust cos
macro description cisco-phone
auto qos voip cisco-phone
spanning-tree portfast
spanning-tree bpduguard enable
end
The switch automatically globally enabled mls qos and configured the many class-maps, policy-maps, and applied them all accordingly.  As you know, it is important to establish the trust boundaries when doing voice and QoS.  These switches also uses SRR which is a very good way of applying shaping.
Does this help?  I hope so.  Please fire back any thoughts or questions you may have.
Andrew Lee Lissitz