Hey guys.

I m in trouble with the phone connected to Fa1/0/23 of the 3750 in HQ.

Vlan assignement are OK:
HQ-3750#sh run int fa1/0/23
Building configuration...

Current configuration : 113 bytes
!
interface FastEthernet1/0/23
 switchport access vlan 10
 switchport voice vlan 20
 spanning-tree portfast
end

HQ-3750#sh run int fa1/0/1
Building configuration...

Current configuration : 153 bytes
!
interface FastEthernet1/0/1
 switchport trunk encapsulation dot1q
 switchport trunk native vlan 10
 switchport mode trunk
 speed 100
 duplex full
end

HQ-3750#sh int trunk

Port        Mode             Encapsulation  Status        Native vlan
Fa1/0/1     on               802.1q         trunking      10

Port        Vlans allowed on trunk
Fa1/0/1     1-4094

Port        Vlans allowed and active in management domain
Fa1/0/1     1,10,20,30

Port        Vlans in spanning tree forwarding state and not pruned
Fa1/0/1     1,10,20,30




IP HELPER on the L3 Device is OK

interface FastEthernet0/0.20
 encapsulation dot1Q 20
 ip address 10.10.200.3 255.255.255.0
 ip helper-address 10.10.210.10
end


IP Phone can get an IP from the PUB (10.10.210.10)

HQ-3750#sh cdp neigh fa1/0/23 det
-------------------------
Device ID: SEP0021A086825D
Entry address(es):
  IP address: 10.10.200.50
Platform: Cisco IP Phone 7962,  Capabilities: Host Phone
Interface: FastEthernet1/0/23,  Port ID (outgoing port): Port 1
Holdtime : 178 sec

Version :
SCCP42.8-4-1S

advertisement version: 2
Duplex: full
Power drawn: 6.300 Watts
Power request id: 33373, Power management id: 1
Power request levels are:6300 0 0 0 0
Management address(es):



the DHCP subnet is identical (except the IP range of course :) ) to the others DHCP pool which other phone use and can register to CUCM...

I have no idea what is the problem here since it is a very basic problem ....

if anyone has experienced the same on POD 11 of PL ?


Many thanks for your help on this



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