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Router 3925 creates port channels by itself

Hi...I have a 3929 router that I am connecting to a 6509E using port-channel configuration; however, it seems like the router created a port-channel for each of the switch default vlans. Here is the configuration:

------

Router

interface Port-channel1
 no ip address
 hold-queue 150 in


interface Port-channel1.35
 description Voice
 encapsulation dot1Q 35
 ip address 10.10.10.5 255.255.254.0
 ip virtual-reassembly in

interface Port-channel1.45
 description Edge
 encapsulation dot1Q 45
 ip address 20.20.20.5 255.255.255.0
 ip virtual-reassembly in

------

Switch


interface Port-channel40
 description = EDGE & VOICE =
 switchport
 switchport trunk native vlan 999
 switchport trunk allowed vlan 35,45
 switchport mode trunk
 switchport nonegotiate
end

.

Current configuration : 195 bytes
!
interface GigabitEthernet1/3/40
 switchport
 switchport trunk native vlan 999
 switchport trunk allowed vlan 35,45
 switchport mode trunk
 switchport nonegotiate
 channel-group 40 mode on
end

!
interface GigabitEthernet2/3/40
 switchport
 switchport trunk native vlan 999
 switchport trunk allowed vlan 35,45
 switchport mode trunk
 switchport nonegotiate
 channel-group 40 mode on

However after carefully looking at the configuration, I noticed that now a port channel exists for each of the pre-defined switch vlans (see below). Has anyone noticed this behavior? Is there anything I am doing incorrectly?

Port-channel1.35           10.10.10.5     YES NVRAM  up                    up      
Port-channel1.36           unassigned      YES unset  deleted               down    
Port-channel1.37           unassigned      YES unset  up                    up      
Port-channel1.38           unassigned      YES unset  up                    up      
Port-channel1.39           unassigned      YES unset  up                    up      
Port-channel1.40           unassigned      YES unset  up                    up      
Port-channel1.41           unassigned      YES unset  up                    up      
Port-channel1.42           unassigned      YES unset  up                    up      
Port-channel1.43           unassigned      YES unset  up                    up      
Port-channel1.44           unassigned      YES unset  up                    up      
Port-channel1.45           20.20.20.5     YES NVRAM  up                    up     

Thank you.

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