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IP Phone Failure Because of Voice Vlan

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Hi All,

I want to mentione about a quick problem that i've encountered before,

When you configure voice vlan in an  interface of huawei device,it sometimes can fail to ping (access) IP Phone even though they are directly connected and in same subnet.

Root cause for me : Directly connected IP Phone model NEC IP Phones has it's on vlan 7 by can check this with the below command.So based on this you should delete default vlan from IP Phone or change your interface configuration as tagged vlan

[Huawei]display lldp neighbor interface gi 0/0/3

GigabitEthernet0/0/3 has 1 neighbors:

Neighbor index : 1

Chassis type   :networkAddress 

Chassis ID     : 

Port ID type   :macAddress 

Port ID        :Port description    :LAN Port

System name         :NEC IP Phone

System description  :DT800 Series

System capabilities supported   :bridge telephone 

System capabilities enabled     :bridge telephone 

Expired time   :109s

Protocol identity   :

Auto-negotiation supported    :Yes 

Auto-negotiation enabled      :Yes

OperMau   :speed(100)/duplex(Full)

Power port class         :PD 

PSE power supported      :No 

PSE power enabled        :No 

  ---- More ----[42D                                          [42DPSE pairs control ability:No 

  ---- More ----[42D                                          [42DPower pairs              :Unknown 

Port power classification:Unknown

Link aggregation supported:No 

Link aggregation enabled :No 

Aggregation port ID      :0 

Maximum frame Size       :0

MED Device information             

Device class   :EndPoint Class III

HardwareRev       :

FirmwareRev       :

SoftwareRev       :-

SerialNum         :-

Manufacturer name :NEC

Model name        :DT820(8LDX)

Asset tracking identifier:-

Media policy type   :Voice 

Unknown Policy      :Defined 

VLAN tagged         :Yes 

Media policy VlanID      :7 

Media policy L2 priority :7 

Media policy Dscp        :4

Power Type               :PD 

PoE PSE power source     :Unknown 

Port PSE Priority        :Unknown 

Port Available power value:36

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