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Unfortunately I can't find a problem with CDP (or lack of it!).

This is what happens when I plug a phone into 3/25 on the switch - you
can see that it goes into non-trunked mode (native vlan 2) even though
CDP is running.

Any ideas?

Sunbury-Sw1 (enable) sho port 3/25
Port Name Status Vlan Level Duplex Speed
Type
----- ------------------ ---------- ---------- ------ ------ -----
------------
3/25 Phone Ports notconnect 2 normal auto auto
10/100BaseTX

Port AuxiliaryVlan AuxVlan-Status InlinePowered
PowerAllocated
Admin Oper Detected mWatt mA @51V
----- ------------- -------------- ----- ------ -------- -----
--------
3/25 10 inactive auto off no 0 0


Port Security Violation Shutdown-Time Age-Time Max-Addr Trap
IfIndex
----- -------- --------- ------------- -------- -------- --------
-------
3/25 disabled shutdown 0 0 1 disabled
83

Port Num-Addr Secure-Src-Addr Age-Left Last-Src-Addr
Shutdown/Time-Left
----- -------- ----------------- -------- -----------------
------------------
3/25 0 - - - -
-

Port Status Channel Admin Ch
Mode Group Id
----- ---------- -------------------- ----- -----
3/25 notconnect off 276 0

Port Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize
--More--2003 Jul 09 00:39:24 %DTP-5-VLAN2PORTONort 3/25 has become a
vlan2-acc
ess port
2003 Jul 09 00:39:24 %PAGP-5-PORTTOSTPort 3/25 joined bridge port
3/25
----- ---------- ---------- ---------- ---------- ---------
3/25 - 1 2 8 0

Port Single-Col Multi-Coll Late-Coll Excess-Col Carri-Sen Runts
Giants
----- ---------- ---------- ---------- ---------- --------- ---------
---------
3/25 0 0 0 0 1 7
0

Last-Time-Cleared
--------------------------
Thu Feb 20 2003, 00:37:23
Sunbury-Sw1 (enable)
Sunbury-Sw1 (enable) sho port cdp 3/25
CDP : enabled
Message Interval : 60
Hold Time : 180
Version : V2
Device Id Format : Other

Port CDP Status
-------- ----------
3/25 enabled
Sunbury-Sw1 (enable)