Hi Cisco Experts,
I have an issue that in Cisco 3750 Switch, that Voice VLAN 800 for IP Phones is working on interface Fastethernet port but not working on gigabitethernet port(no lights on IP Phones via POE). Only the Data VLAN is working on Gigabitethernet port but not for Voice VLAN 800. Please see below config. Is there any way to make this work?
VLAN 101 - DATA
VLAN 800- Voice
MHI-PS-Fifth-Floor#sh run int gig 2/0/3
Current configuration : 355 bytes
switchport access vlan 101
switchport mode access
switchport voice vlan 800
srr-queue bandwidth share 10 10 60 20
mls qos trust device cisco-phone
mls qos trust cos
auto qos voip cisco-phone
service-policy input AutoQoS-Police-CiscoPhone
Thank you in advance.
It may be that the phones are not gig (only 100mb). If the phones are gig, can you remove "speed 1000" and let the interface negotiate and test again?
Thank you for your response.
we are using Cisco IP Phone 6941. As per the above URL. It is in 10/100BASE-T
The phone has a 10/100BASE-T Ethernet connection through two RJ-45 ports, one for the LAN connection and the other for connecting a downstream Ethernet device such as a PC.
Do I need to purchase a Cisco IP Phone with Gig port features?
That is correct. Your phones are older and support only 10/100Mb and not gig. So, it is up to you and your budget if you want to purchases newer phones with Gig capabilities but 100Mb phones usually work just fine.
What is the exact model of your switch? Usually if a switch has 100 and 1000 Mbps ports, the 100 are for access and will have POE and the 1000 ports are for uplink only, and thus will not be POE.
Show the results of the following commands also:
show ip inter brief
show power inline
The results of "sh power inline" reveal that your GIG ports are not PoE. This is the root cause of your issue. You have the following options.
1. Use the 100 ports that provide power
2. Use the GIG ports and use an inline power injector.
3. Use the GIG ports and use a power adapter plugged directly into the phone.
where are you seeing the rejected message? on the phone or in CUCM?
Usually a rejected status means that the phone is not configured at all CUCM (if auto-registration is disabled), or the phone was created in CUCM with the incorrect phone type.
It could also be a certificate issue on the phone. Perform a factory reset on the phone to clear any cashed config or certificates it may have.
The physical phone and the phone type in CUCM must match. As mentioned previously, them not matching is usually the cause of a rejected status. Are they both 6945?