IP-телефоны Cisco без CDP

В одной документации по коммутаторам juniper вычитал, что некоторые модели телефонов Cisco могут попадать в голосовой vlan посредством LLDP. Решил поэкспериментировать.

Сейчас телефон виден по CDP. Отключается cdp в порту, выключается/включается порт, чтобы перезагрузить PoE телефон, проверяется lldp.

switch#sh cdp neighbors 
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
                  S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone, 
                  D - Remote, C - CVTA, M - Two-port Mac Relay 

Device ID        Local Intrfce     Holdtme    Capability  Platform  Port ID
SEP002497AA6A9A  Fas 1/0/9         152             H P M  IP Phone  Port 1

switch#sh run int Fas 1/0/9
Building configuration...

Current configuration : 237 bytes
!
interface FastEthernet1/0/9
 switchport access vlan 100
 switchport mode access
 switchport voice vlan 110
 macro description users_security 
 spanning-tree portfast
 spanning-tree bpduguard enable
 ip verify source port-security
end

switch#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
switch(config)#interface FastEthernet1/0/9
switch(config-if)#no cdp enable 
switch(config-if)#sh
switch(config-if)#no sh
switch(config-if)#^Z

switch#sh lldp nei FastEthernet1/0/9 det   
------------------------------------------------
Chassis id: [skip]
Port id: 002497AA6A9A:P1
Port Description: SW PORT
System Name: SEP002497AA6A9A

System Description: 
Cisco IP Phone CP-7911G,V7, SCCP11.8-4-2S

Time remaining: 157 seconds
System Capabilities: B,T
Enabled Capabilities: B,T
Management Addresses:
    IP: [skip]
Auto Negotiation - supported, enabled
Physical media capabilities:
    1000baseT(HD)
    1000baseX(FD)
    Symm, Asym Pause(FD)
    Symm Pause(FD)
Media Attachment Unit type: 16
Vlan ID: - not advertised

MED Information:

    MED Codes:
          (NP) Network Policy, (LI) Location Identification
          (PS) Power Source Entity, (PD) Power Device
          (IN) Inventory

    H/W revision: 7
    F/W revision: tnp11.3-0-1-32.bin
    S/W revision: SCCP11.8-4-2S
    Serial number: FCH1303AJZC
    Manufacturer: Cisco Systems, Inc.
    Model: CP-7911G
    Capabilities: NP, PD, IN
    Device type: Endpoint Class III
    Network Policy(Voice): VLAN 203, tagged, Layer-2 priority: 5, DSCP: 46
    Network Policy(Voice Signal): VLAN 110, tagged, Layer-2 priority: 0, DSCP: 0
    PD device, Power source: Unknown, Power Priority: Unknown, Wattage: 5.0
    Location - not advertised
          

Total entries displayed: 1

switch#

Буду изучать чем это чревато