[cisco-voip] Phones not registering with 2960S switch.

[Madziarczyk, Jonathan]

Why are you trying to make your access vlan the same as your voice vlan?

A)     It probably goes against best practice for segregating voice
traffic from PC traffic

B)      The link between your phone and switch is a dot1q trunk so it
sounds like you're trying to run vlan 205 native and run vlan 205
encapsulated (from your e-mail):

*         Administrative private-vlan trunk Native VLAN tagging: enabled

*         Administrative private-vlan trunk encapsulation: dot1q

*         Administrative private-vlan trunk normal VLANs: none

 

If you really must run both access and voice traffic on the same VLAN,
try taking out the "switchport voice vlan 205" statement and just keep
"switchport access vlan 205".  That may do what you are trying to
accomplish.

 

 

 

From: cisco-voip [mailto:cisco-voip-bounces at puck.nether.net] On Behalf
Of Jason Aarons (AM)
Sent: Monday, April 22, 2013 2:58 PM
To: cisco-voip (cisco-voip at puck.nether.net)
Subject: [cisco-voip] Phones not registering with 2960S switch.

 

Phone un-registers when I type "switchport access vlan 205"  I have both
7965s and non-Cisco devices I need on vlan 205.  I see nothing wrong
with this setup.  Phone uses CDPv2 to get the voice vlan not "Switchport
access vlan x".

 

Phone load is SCCP45.9-2-3S

 

2960S-VOICE-02#show run int gig1/0/1

Building configuration...

 

Current configuration : 363 bytes

!

interface GigabitEthernet1/0/1

 description Phones

 switchport access vlan 205  <<<<<<this causes phones to un-register,
can't ping them

 switchport mode access

 switchport voice vlan 205

 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

 

CG-2960S-VOICE-02#show ver

Cisco IOS Software, C2960S Software (C2960S-UNIVERSALK9-M), Version
15.0(2)SE1, RELEASE SOFTWARE (fc1)

 

System image file is
"flash:/c2960s-universalk9-mz.150-2.SE1/c2960s-universalk9-mz.150-2.SE1.
bin"

 

2960S-VOICE-02#show int gig1/0/1 switchport

Name: Gi1/0/1

Switchport: Enabled

Administrative Mode: static access

Operational Mode: static access

Administrative Trunking Encapsulation: dot1q

Operational Trunking Encapsulation: native

Negotiation of Trunking: Off

Access Mode VLAN: 205 (CG-Voice)

Trunking Native Mode VLAN: 1 (default)

Administrative Native VLAN tagging: enabled

Voice VLAN: 205 (CG-Voice)

Administrative private-vlan host-association: none

Administrative private-vlan mapping: none

Administrative private-vlan trunk native VLAN: none

Administrative private-vlan trunk Native VLAN tagging: enabled

Administrative private-vlan trunk encapsulation: dot1q

Administrative private-vlan trunk normal VLANs: none

Administrative private-vlan trunk associations: none

Administrative private-vlan trunk mappings: none

Operational private-vlan: none

Trunking VLANs Enabled: ALL

Pruning VLANs Enabled: 2-1001

Capture Mode Disabled

Capture VLANs Allowed: ALL

 

Protected: false

Unknown unicast blocked: disabled

Unknown multicast blocked: disabled

Appliance trust: none

CG-2960S-VOICE-02#show cdp

Global CDP information:

        Sending CDP packets every 60 seconds

        Sending a holdtime value of 180 seconds

        Sending CDPv2 advertisements is enabled

CG-2960S-VOICE-02#

 

 

 

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