cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
Announcements

Ask the Expert- SD-WAN

354
Views
20
Helpful
18
Replies
Highlighted

Cisco Switch 3750 - Voice VLAN for IP Phones is not working on Interface Gigabit-Ethernet port

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
Building configuration...

Current configuration : 355 bytes
!
interface GigabitEthernet2/0/3
switchport access vlan 101
switchport mode access
switchport voice vlan 800
speed 1000
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust device cisco-phone
mls qos trust cos
auto qos voip cisco-phone
spanning-tree portfast
service-policy input AutoQoS-Police-CiscoPhone
end

 

Thank you in advance.

 

Erwin

18 REPLIES 18
VIP Expert

Re: Cisco Switch 3750 - Voice VLAN for IP Phones is not working on Interface Gigabit-Ethernet port

Hi,

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?

HTH

Re: Cisco Switch 3750 - Voice VLAN for IP Phones is not working on Interface Gigabit-Ethernet port

Hi Reza,

 

Thank you for your response.

 

https://www.cisco.com/c/en/us/products/collateral/collaboration-endpoints/unified-ip-phone-6941/data_sheet_c78-541536.html

 

we are using Cisco IP Phone 6941. As per the above URL. It is in 10/100BASE-T

 

"

Ethernet switch

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? 

 

Thanks,

Erwin

Everyone's tags (1)
VIP Expert

Re: Cisco Switch 3750 - Voice VLAN for IP Phones is not working on Interface Gigabit-Ethernet port

Hi Erwin,

 

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.

HTH

Re: Cisco Switch 3750 - Voice VLAN for IP Phones is not working on Interface Gigabit-Ethernet port

Hi Reza,

I purchased an Cisco IP Phone 6945 - which is said on the link below has a gigabit Ethernet connection on it. Still, after I plugin to interface gigabitport the IP Phone 6945 still not working(no light). I am not sure what other issue is. I also shutdown and no shut the gig port - still same result and not working.

do you know the reason why still not working?

https://www.cisco.com/c/en/us/products/collateral/collaboration-endpoints/unified-ip-phone-6941/data_sheet_c78-541536.html


Thanks in advance.

Erwin
VIP Expert

Re: Cisco Switch 3750 - Voice VLAN for IP Phones is not working on Interface Gigabit-Ethernet port

Did you try removing the speed command on the port? I'm also wondering if the newer phone is requesting more power than the port can provide.

BTW, even a g.711 VoIP call only uses about 100 Kbps. The reason to use a phone with a gig port is to support a downstream PC, at gig (although sometimes the VoIP phone can be a bottleneck - we discovered some early Cisco phones with 10/100 ports couldn't actually handle 100 Mbps to/from a downstream PC).

Re: Cisco Switch 3750 - Voice VLAN for IP Phones is not working on Interface Gigabit-Ethernet port

Hi Joseph,

Yes, I tried the following:
1. I changed the interface gig 2/0/3 speed from 1000 to 100. Still phone no link light.
2. Shutdown and No Shutdown the int gig 2/0/3. Still no link light on cisco IP Phone 6945.
3. the remove the current config to default config and put only the VLAN for Data(101 and VLAN for Voice(800). No link Light. Not sure why it is not working. But, on Cisco Switch 2960s on Gig port it is the Cisco Phone is working fine.

MHI-PS-Fifth-Floor#sh run int gig 2/0/3
Building configuration...

Current configuration : 141 bytes
!
interface GigabitEthernet2/0/3
switchport access vlan 101
switchport mode access
switchport voice vlan 800
spanning-tree portfast
end
Beginner

Re: Cisco Switch 3750 - Voice VLAN for IP Phones is not working on Interface Gigabit-Ethernet port

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

Re: Cisco Switch 3750 - Voice VLAN for IP Phones is not working on Interface Gigabit-Ethernet port

Hi Mike,

See below Version, sh ip int br and sh power inline. it is Cisco Switch 3750 Catalyst.Not sure why it is not working but on Cisco 2960 Switch it is working fine with Interface gig Ports/

Cisco IOS Software, C3750 Software (C3750-IPBASEK9-M), Version 12.2(50)SE1, RELEASE SOFTWARE (fc2)
Copyright (c) 1986-2009 by Cisco Systems, Inc.
Compiled Mon 06-Apr-09 08:19 by amvarma
Image text-base: 0x00003000, data-base: 0x01900000

ROM: Bootstrap program is C3750 boot loader
BOOTLDR: C3750 Boot Loader (C3750-HBOOT-M) Version 12.2(53r)SEY1, RELEASE SOFTWARE (fc1)

sh ip int br below:

MHI-PS-Fifth-Floor#sh ip int br
Interface IP-Address OK? Method Status Protocol
Vlan1 unassigned YES TFTP up up
Vlan101 10.192.64.6 YES NVRAM up up
Vlan300 172.26.140.5 YES NVRAM up down
Vlan301 172.17.2.3 YES manual up up
FastEthernet1/0/1 unassigned YES unset down down
FastEthernet1/0/2 unassigned YES unset down down
FastEthernet1/0/3 unassigned YES unset down down
FastEthernet1/0/4 unassigned YES unset up up
FastEthernet1/0/5 unassigned YES unset down down
FastEthernet1/0/6 unassigned YES unset down down
FastEthernet1/0/7 unassigned YES unset down down
FastEthernet1/0/8 unassigned YES unset down down
FastEthernet1/0/9 unassigned YES unset down down
FastEthernet1/0/10 unassigned YES unset down down
FastEthernet1/0/11 unassigned YES unset down down
FastEthernet1/0/12 unassigned YES unset up up
FastEthernet1/0/13 unassigned YES unset down down
FastEthernet1/0/14 unassigned YES unset down down
FastEthernet1/0/15 unassigned YES unset down down
FastEthernet1/0/16 unassigned YES unset down down
FastEthernet1/0/17 unassigned YES unset up up
FastEthernet1/0/18 unassigned YES unset up up
FastEthernet1/0/19 unassigned YES unset down down
FastEthernet1/0/20 unassigned YES unset down down
FastEthernet1/0/21 unassigned YES unset down down
FastEthernet1/0/22 unassigned YES unset down down
FastEthernet1/0/23 unassigned YES unset up up
FastEthernet1/0/24 unassigned YES unset up up
FastEthernet1/0/25 unassigned YES unset up up
FastEthernet1/0/26 unassigned YES unset up up
FastEthernet1/0/27 unassigned YES unset up up
FastEthernet1/0/28 unassigned YES unset down down
FastEthernet1/0/29 unassigned YES unset down down
FastEthernet1/0/30 unassigned YES unset up up
FastEthernet1/0/31 unassigned YES unset up up
FastEthernet1/0/32 unassigned YES unset up up
FastEthernet1/0/33 unassigned YES unset down down
FastEthernet1/0/34 unassigned YES unset down down
FastEthernet1/0/35 unassigned YES unset down down
FastEthernet1/0/36 unassigned YES unset down down
FastEthernet1/0/37 unassigned YES unset down down
FastEthernet1/0/38 unassigned YES unset up up
FastEthernet1/0/39 unassigned YES unset down down
FastEthernet1/0/40 unassigned YES unset up up
FastEthernet1/0/41 unassigned YES unset down down
FastEthernet1/0/42 unassigned YES unset down down
FastEthernet1/0/43 unassigned YES unset up up
FastEthernet1/0/44 unassigned YES unset down down
FastEthernet1/0/45 unassigned YES unset down down
FastEthernet1/0/46 unassigned YES unset up up
FastEthernet1/0/47 unassigned YES unset up up
FastEthernet1/0/48 unassigned YES unset down down
GigabitEthernet1/0/1 unassigned YES unset administratively down down
GigabitEthernet1/0/2 unassigned YES unset up up
GigabitEthernet1/0/3 unassigned YES unset down down
GigabitEthernet1/0/4 unassigned YES unset up up
FastEthernet2/0/1 unassigned YES unset up up
FastEthernet2/0/2 unassigned YES unset up up
FastEthernet2/0/3 unassigned YES unset up up
FastEthernet2/0/4 unassigned YES unset up up
FastEthernet2/0/5 unassigned YES unset up up
FastEthernet2/0/6 unassigned YES unset down down
FastEthernet2/0/7 unassigned YES unset down down
FastEthernet2/0/8 unassigned YES unset up up
FastEthernet2/0/9 unassigned YES unset up up
FastEthernet2/0/10 unassigned YES unset up up
FastEthernet2/0/11 unassigned YES unset down down
FastEthernet2/0/12 unassigned YES unset up up
FastEthernet2/0/13 unassigned YES unset up up
FastEthernet2/0/14 unassigned YES unset up up
FastEthernet2/0/15 unassigned YES unset up up
FastEthernet2/0/16 unassigned YES unset up up
FastEthernet2/0/17 unassigned YES unset up up
FastEthernet2/0/18 unassigned YES unset down down
FastEthernet2/0/19 unassigned YES unset up up
FastEthernet2/0/20 unassigned YES unset up up
FastEthernet2/0/21 unassigned YES unset up up
FastEthernet2/0/22 unassigned YES unset up up
FastEthernet2/0/23 unassigned YES unset up up
FastEthernet2/0/24 unassigned YES unset up up
FastEthernet2/0/25 unassigned YES unset up up
FastEthernet2/0/26 unassigned YES unset up up
FastEthernet2/0/27 unassigned YES unset down down
FastEthernet2/0/28 unassigned YES unset up up
FastEthernet2/0/29 unassigned YES unset down down
FastEthernet2/0/30 unassigned YES unset up up
FastEthernet2/0/31 unassigned YES unset up up
FastEthernet2/0/32 unassigned YES unset down down
FastEthernet2/0/33 unassigned YES unset down down
FastEthernet2/0/34 unassigned YES unset down down
FastEthernet2/0/35 unassigned YES unset up up
FastEthernet2/0/36 unassigned YES unset down down
FastEthernet2/0/37 unassigned YES unset up up
FastEthernet2/0/38 unassigned YES unset down down
FastEthernet2/0/39 unassigned YES unset down down
FastEthernet2/0/40 unassigned YES unset down down
FastEthernet2/0/41 unassigned YES unset up up
FastEthernet2/0/42 unassigned YES unset up up
FastEthernet2/0/43 unassigned YES unset down down
FastEthernet2/0/44 unassigned YES unset up up
FastEthernet2/0/45 unassigned YES unset down down
FastEthernet2/0/46 unassigned YES unset up up
FastEthernet2/0/47 unassigned YES unset down down
FastEthernet2/0/48 unassigned YES unset up up
GigabitEthernet2/0/1 unassigned YES unset up up
GigabitEthernet2/0/2 unassigned YES unset down down
GigabitEthernet2/0/3 unassigned YES unset down down
GigabitEthernet2/0/4 unassigned YES unset down down
FastEthernet3/0/1 unassigned YES unset up up
FastEthernet3/0/2 unassigned YES unset up up
FastEthernet3/0/3 unassigned YES unset down down
FastEthernet3/0/4 unassigned YES unset up up
FastEthernet3/0/5 unassigned YES unset down down
FastEthernet3/0/6 unassigned YES unset down down
FastEthernet3/0/7 unassigned YES unset down down
FastEthernet3/0/8 unassigned YES unset up up
FastEthernet3/0/9 unassigned YES unset up up
FastEthernet3/0/10 unassigned YES unset up up
FastEthernet3/0/11 unassigned YES unset down down
FastEthernet3/0/12 unassigned YES unset up up
FastEthernet3/0/13 unassigned YES unset down down
FastEthernet3/0/14 unassigned YES unset down down
FastEthernet3/0/15 unassigned YES unset up up
FastEthernet3/0/16 unassigned YES unset up up
FastEthernet3/0/17 unassigned YES unset up up
FastEthernet3/0/18 unassigned YES unset up up
FastEthernet3/0/19 unassigned YES unset up up
FastEthernet3/0/20 unassigned YES unset up up
FastEthernet3/0/21 unassigned YES unset down down
FastEthernet3/0/22 unassigned YES unset up up
FastEthernet3/0/23 unassigned YES unset down down
FastEthernet3/0/24 unassigned YES unset up up
FastEthernet3/0/25 unassigned YES unset down down
FastEthernet3/0/26 unassigned YES unset down down
FastEthernet3/0/27 unassigned YES unset up up
FastEthernet3/0/28 unassigned YES unset up up
FastEthernet3/0/29 unassigned YES unset up up
FastEthernet3/0/30 unassigned YES unset down down
FastEthernet3/0/31 unassigned YES unset up up
FastEthernet3/0/32 unassigned YES unset down down
FastEthernet3/0/33 unassigned YES unset down down
FastEthernet3/0/34 unassigned YES unset down down
FastEthernet3/0/35 unassigned YES unset up up
FastEthernet3/0/36 unassigned YES unset up up
FastEthernet3/0/37 unassigned YES unset up up
FastEthernet3/0/38 unassigned YES unset up up
FastEthernet3/0/39 unassigned YES unset up up
FastEthernet3/0/40 unassigned YES unset up up
FastEthernet3/0/41 unassigned YES unset down down
FastEthernet3/0/42 unassigned YES unset down down
FastEthernet3/0/43 unassigned YES unset down down
FastEthernet3/0/44 unassigned YES unset down down
FastEthernet3/0/45 unassigned YES unset down down
FastEthernet3/0/46 unassigned YES unset up up
FastEthernet3/0/47 unassigned YES unset down down
FastEthernet3/0/48 unassigned YES unset up up
GigabitEthernet3/0/1 unassigned YES unset down down
GigabitEthernet3/0/2 unassigned YES unset down down
GigabitEthernet3/0/3 unassigned YES unset up up
GigabitEthernet3/0/4 unassigned YES unset up up

MHI-PS-Fifth-Floor#sh power inline

Module Available Used Remaining
(Watts) (Watts) (Watts)
------ --------- -------- ---------
1 370.0 105.8 264.2
2 370.0 187.9 182.1
3 370.0 145.4 224.6
Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- ------------------- ----- ----
Fa1/0/1 auto off 0.0 n/a n/a 15.4
Fa1/0/2 auto off 0.0 n/a n/a 15.4
Fa1/0/3 auto off 0.0 n/a n/a 15.4
Fa1/0/4 auto on 10.5 IP Phone 7937 3 15.4
Fa1/0/5 auto off 0.0 n/a n/a 15.4
Fa1/0/6 auto off 0.0 n/a n/a 15.4
Fa1/0/7 auto off 0.0 n/a n/a 15.4
Fa1/0/8 auto off 0.0 n/a n/a 15.4
Fa1/0/9 auto off 0.0 n/a n/a 15.4
Fa1/0/10 auto off 0.0 n/a n/a 15.4
Fa1/0/11 auto off 0.0 n/a n/a 15.4
Fa1/0/12 auto on 15.4 AIR-CAP2602E-A-K9 3 15.4
Fa1/0/13 auto off 0.0 n/a n/a 15.4
Fa1/0/14 auto off 0.0 n/a n/a 15.4
Fa1/0/15 auto off 0.0 n/a n/a 15.4
Fa1/0/16 auto off 0.0 n/a n/a 15.4
Fa1/0/17 auto on 15.4 AIR-CAP3502I-A-K9 3 15.4
Fa1/0/18 auto off 0.0 n/a n/a 15.4
Fa1/0/19 auto off 0.0 n/a n/a 15.4
Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- ------------------- ----- ----
Fa1/0/20 auto off 0.0 n/a n/a 15.4
Fa1/0/21 auto off 0.0 n/a n/a 15.4
Fa1/0/22 auto off 0.0 n/a n/a 15.4
Fa1/0/23 auto on 6.0 IP Phone 6941 2 15.4
Fa1/0/24 auto on 6.0 IP Phone 6941 2 15.4
Fa1/0/25 auto on 6.0 IP Phone 6941 2 15.4
Fa1/0/26 auto on 6.0 IP Phone 6941 2 15.4
Fa1/0/27 auto on 6.0 IP Phone 6941 2 15.4
Fa1/0/28 auto off 0.0 n/a n/a 15.4
Fa1/0/29 auto off 0.0 n/a n/a 15.4
Fa1/0/30 auto off 0.0 n/a n/a 15.4
Fa1/0/31 auto on 10.5 IP Phone 7937 3 15.4
Fa1/0/32 auto on 6.0 IP Phone 6941 2 15.4
Fa1/0/33 auto off 0.0 n/a n/a 15.4
Fa1/0/34 auto off 0.0 n/a n/a 15.4
Fa1/0/35 auto off 0.0 n/a n/a 15.4
Fa1/0/36 auto off 0.0 n/a n/a 15.4
Fa1/0/37 auto off 0.0 n/a n/a 15.4
Fa1/0/38 auto on 6.0 IP Phone 6941 2 15.4
Fa1/0/39 auto off 0.0 n/a n/a 15.4
Fa1/0/40 auto on 6.0 IP Phone 6941 2 15.4
Fa1/0/41 auto off 0.0 n/a n/a 15.4
Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- ------------------- ----- ----
Fa1/0/42 auto off 0.0 n/a n/a 15.4
Fa1/0/43 auto off 0.0 n/a n/a 15.4
Fa1/0/44 auto off 0.0 n/a n/a 15.4
Fa1/0/45 auto off 0.0 n/a n/a 15.4
Fa1/0/46 auto on 6.0 IP Phone 6941 2 15.4
Fa1/0/47 auto off 0.0 n/a n/a 15.4
Fa1/0/48 auto off 0.0 n/a n/a 15.4
Fa2/0/1 auto on 6.0 IP Phone 6941 2 15.4
Fa2/0/2 auto on 6.0 IP Phone 6941 2 15.4
Fa2/0/3 auto on 6.0 IP Phone 6941 2 15.4
Fa2/0/4 auto on 6.0 IP Phone 6941 2 15.4
Fa2/0/5 auto on 6.0 IP Phone 6941 2 15.4
Fa2/0/6 auto off 0.0 n/a n/a 15.4
Fa2/0/7 auto off 0.0 n/a n/a 15.4
Fa2/0/8 auto on 6.0 IP Phone 6941 2 15.4
Fa2/0/9 auto on 12.0 IP Phone 7965 3 15.4
Fa2/0/10 auto on 6.0 IP Phone 6941 2 15.4
Fa2/0/11 auto off 0.0 n/a n/a 15.4
Fa2/0/12 auto on 6.0 IP Phone 6941 2 15.4
Fa2/0/13 auto on 6.0 IP Phone 6941 2 15.4
Fa2/0/14 auto on 6.0 IP Phone 6941 2 15.4
Fa2/0/15 auto on 6.0 IP Phone 6941 2 15.4
Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- ------------------- ----- ----
Fa2/0/16 auto on 6.0 IP Phone 6941 2 15.4
Fa2/0/17 auto on 6.0 IP Phone 6941 2 15.4
Fa2/0/18 auto off 0.0 n/a n/a 15.4
Fa2/0/19 auto on 6.0 IP Phone 6941 2 15.4
Fa2/0/20 auto on 6.0 IP Phone 6941 2 15.4
Fa2/0/21 auto on 6.0 IP Phone 6941 2 15.4
Fa2/0/22 auto on 6.0 IP Phone 6941 2 15.4
Fa2/0/23 auto on 6.0 IP Phone 6941 2 15.4
Fa2/0/24 auto off 0.0 n/a n/a 15.4
Fa2/0/25 auto off 0.0 n/a n/a 15.4
Fa2/0/26 auto on 6.0 IP Phone 6941 2 15.4
Fa2/0/27 auto off 0.0 n/a n/a 15.4
Fa2/0/28 auto on 6.0 IP Phone 6941 2 15.4
Fa2/0/29 auto off 0.0 n/a n/a 15.4
Fa2/0/30 auto off 0.0 n/a n/a 15.4
Fa2/0/31 auto off 0.0 n/a n/a 15.4
Fa2/0/32 auto off 0.0 n/a n/a 15.4
Fa2/0/33 auto off 0.0 n/a n/a 15.4
Fa2/0/34 auto off 0.0 n/a n/a 15.4
Fa2/0/35 auto on 15.4 AIR-CAP3502I-A-K9 3 15.4
Fa2/0/36 auto off 0.0 n/a n/a 15.4
Fa2/0/37 auto off 0.0 n/a n/a 15.4
Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- ------------------- ----- ----
Fa2/0/38 auto off 0.0 n/a n/a 15.4
Fa2/0/39 auto off 0.0 n/a n/a 15.4
Fa2/0/40 auto off 0.0 n/a n/a 15.4
Fa2/0/41 auto on 6.0 IP Phone 6941 2 15.4
Fa2/0/42 auto on 10.5 IP Phone 7937 3 15.4
Fa2/0/43 auto off 0.0 n/a n/a 15.4
Fa2/0/44 auto on 6.0 IP Phone 6941 2 15.4
Fa2/0/45 auto off 0.0 n/a n/a 15.4
Fa2/0/46 auto on 6.0 IP Phone 6941 2 15.4
Fa2/0/47 auto off 0.0 n/a n/a 15.4
Fa2/0/48 auto on 12.0 IP Phone 7965 3 15.4
Fa3/0/1 auto on 6.0 IP Phone 6941 2 15.4
Fa3/0/2 auto on 6.0 IP Phone 6941 2 15.4
Fa3/0/3 auto off 0.0 n/a n/a 15.4
Fa3/0/4 auto on 6.0 IP Phone 6941 2 15.4
Fa3/0/5 auto off 0.0 n/a n/a 15.4
Fa3/0/6 auto off 0.0 n/a n/a 15.4
Fa3/0/7 auto off 0.0 n/a n/a 15.4
Fa3/0/8 auto on 6.0 IP Phone 6941 2 15.4
Fa3/0/9 auto on 6.0 IP Phone 6941 2 15.4
Fa3/0/10 auto on 6.0 IP Phone 6941 2 15.4
Fa3/0/11 auto off 0.0 n/a n/a 15.4
Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- ------------------- ----- ----
Fa3/0/12 auto on 6.0 IP Phone 6941 2 15.4
Fa3/0/13 auto off 0.0 n/a n/a 15.4
Fa3/0/14 auto off 0.0 n/a n/a 15.4
Fa3/0/15 auto on 6.0 IP Phone 6941 2 15.4
Fa3/0/16 auto on 6.0 IP Phone 6941 2 15.4
Fa3/0/17 auto off 0.0 n/a n/a 15.4
Fa3/0/18 auto on 6.0 IP Phone 6941 2 15.4
Fa3/0/19 auto on 6.0 IP Phone 6941 2 15.4
Fa3/0/20 auto on 6.0 IP Phone 6941 2 15.4
Fa3/0/21 auto off 0.0 n/a n/a 15.4
Fa3/0/22 auto off 0.0 n/a n/a 15.4
Fa3/0/23 auto off 0.0 n/a n/a 15.4
Fa3/0/24 auto on 6.3 IP Phone 7962 2 15.4
Fa3/0/25 auto off 0.0 n/a n/a 15.4
Fa3/0/26 auto off 0.0 n/a n/a 15.4
Fa3/0/27 auto off 0.0 n/a n/a 15.4
Fa3/0/28 auto on 6.3 IP Phone 7962 2 15.4
Fa3/0/29 auto on 6.0 IP Phone 6941 2 15.4
Fa3/0/30 auto off 0.0 n/a n/a 15.4
Fa3/0/31 auto on 6.0 IP Phone 6941 2 15.4
Fa3/0/32 auto off 0.0 n/a n/a 15.4
Fa3/0/33 auto off 0.0 n/a n/a 15.4
Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- ------------------- ----- ----
Fa3/0/34 auto off 0.0 n/a n/a 15.4
Fa3/0/35 auto on 6.0 IP Phone 6941 2 15.4
Fa3/0/36 auto off 0.0 n/a n/a 15.4
Fa3/0/37 auto off 0.0 n/a n/a 15.4
Fa3/0/38 auto on 6.0 IP Phone 6941 2 15.4
Fa3/0/39 auto on 6.0 IP Phone 6941 2 15.4
Fa3/0/40 auto off 0.0 n/a n/a 15.4
Fa3/0/41 auto off 0.0 n/a n/a 15.4
Fa3/0/42 auto off 0.0 n/a n/a 15.4
Fa3/0/43 auto off 0.0 n/a n/a 15.4
Fa3/0/44 auto off 0.0 n/a n/a 15.4
Fa3/0/45 auto off 0.0 n/a n/a 15.4
Fa3/0/46 auto on 15.4 AIR-CAP3502I-A-K9 3 15.4
Fa3/0/47 auto off 0.0 n/a n/a 15.4
Fa3/0/48 auto on 15.4 AIR-CAP3502I-A-K9 3 15.4
VIP Expert

Re: Cisco Switch 3750 - Voice VLAN for IP Phones is not working on Interface Gigabit-Ethernet port

Looks to be as Mikeleebria mentioned, gig uplink ports aren't PoE.

If that's the issue, either you need to use one of the 10/100 ports or use a power injector.
Beginner

Re: Cisco Switch 3750 - Voice VLAN for IP Phones is not working on Interface Gigabit-Ethernet port

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.

Re: Cisco Switch 3750 - Voice VLAN for IP Phones is not working on Interface Gigabit-Ethernet port

Hi Mike,

I tried to use a Power Injector. Phone got power & Lights on. Also got a 1G Connection on my Laptop. But the Cisco IP Phone 6945(has Gig Features) is not registering the phone to our Cisco Call Manager 9.1.1 and Status is REJECTED.

Do you know the reason why the Cisco Phone 6945 is Rejected from the Cisco Call Manager?

Erwin
Beginner

Re: Cisco Switch 3750 - Voice VLAN for IP Phones is not working on Interface Gigabit-Ethernet port

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.

Re: Cisco Switch 3750 - Voice VLAN for IP Phones is not working on Interface Gigabit-Ethernet port

Hi Mike,

The rejected status is on CUCM. Mostly our Cisco Phone here are 6941 but I am using Cisco 6945 because it has a gig features on it.

I already tried a Factory Reset by Holding the # then press 1,2,3,4,5,6,7,8,9,*,0,#

Do you know other way to make this work on our CUCM?
Beginner

Re: Cisco Switch 3750 - Voice VLAN for IP Phones is not working on Interface Gigabit-Ethernet port

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?

CreatePlease to create content
Content for Community-Ad
July's Community Spotlight Awards