7970 IP Phone blocking data vlan.

[aakhilsameer]

Hi i have cisco 7970 ip phones connected to network.PC is conncted though IP phone.sometimes ip phones takes ip from data vlan and blocks the data vlan .i am providing the switch port configuration here.data vlan is configured with Vmps.IP address releasing for both vlans are from a DHCP server. This is only with 7970 model .other models are workign fine.pls help.

interface FastEthernet0/10

switchport access vlan dynamic
switchport mode access
switchport voice vlan 100
spanning-tree portfast

end

show mac-add######

Vlan    Mac Address       Type        Ports
----    -----------       --------    -----
100    0032.54c4.bc3d    DYNAMIC     Fa0/10
200    0032.54c4.bc3d    BLOCKED     Fa0/10
200    0034.2341.ea3b    DYNAMIC     Fa0/10

[stowellp]

Have you got the PC Port enabled on the phone within CUCM administration?

[aakhilsameer]

Yes..the PC also working..but sometimes when the phone gets restarts  this vlan gets blocked.

[CHRIS CHARLEBOIS]

Is this a problem?  From what I can see, the VMPS is telling the switch to block data vlan traffic to the phone's MAC address, which is what you presumably want.  The phone is supposed to be on the voice vlan, not the data vlan.  So what part of this is not working the way you expect?  Or it it just that this port is displayed as blocked and other ports are not shown to be explicitly blocked?

[aakhilsameer]

sorry the sh mac-add .....attached is the correct output.

this is what i am getting when the switch port gets blocked..

: %VQPCLIENT-7-RECONF: Reconfirming VMPS responses
%VQPCLIENT-2-DENY: Host 0034.2341.ea3b denied on interface Fa0/1
: %VQPCLIENT-2-DENY: Host 0034.2341.ea3b denied on interface Fa0/1
: %VQPCLIENT-7-RECONF: Reconfirming VMPS responses
: %VQPCLIENT-7-RECONF: Reconfirming VMPS responses
: %VQPCLIENT-2-DENY: Host 0034.2341.ea3b denied on interface Fa0/1
%VQPCLIENT-7-RECONF: Reconfirming VMPS responses
: %VQPCLIENT-2-DENY: Host 0034.2341.ea3b denied on interface Fa0/1