Cannot create EtherChannel (LAG) between Dell 5324 and Cisco 3600 Router

I am trying to configure EtherChannel (802.3ad Link Aggregation) between a Dell PowerConnect 5324 and Cisco 3600 series router. I cannot ping between the two devices.

 

The Cisco 3600 router with IOS 12.4 supports EtherChannel (LAG), however it does not support channel group "mode" commands (LACP). 

 

A 3600 router interface can only have "channel-group ".  It does not support command tags such as "auto", "on" or "desirable".

 

I did not configure 802.1q (VLAN trunking) to prove that this is not causing the issue. 

 

Can someone please advise me on the proper way to configure this so I can ping between the two devices?  I'm assuming this issue applies to Cisco 2600 and Cisco 3700 series routers as well.  I also tested this using a PowerConnect 5224 and found the same problem.

Here is how my devices are configured:

---------------------------------------------
Cisco 3600 Router IOS version 12.4(5a)
---------------------------------------------

interface Port-channel1
 ip address 10.0.18.101 255.255.255.0
 full-duplex
 hold-queue 150 in

 

interface FastEthernet1/0
 no ip address
 speed 100
 full-duplex
 channel-group 1
 no cdp enable

 

interface FastEthernet1/1
 no ip address
 speed 100
 full-duplex
 channel-group 1
 no cdp enable

 

---------------------------------------------
Dell 5324 PowerConnect IOS version 2.0.1.3
---------------------------------------------

interface port-channel 1
speed 100
no negotiation
switchport access vlan 18

 

interface range ethernet g(1-2)
speed 100
channel-group 1 mode on
no negotiation

 

vlan database
vlan 18

 

interface vlan 18
ip address 10.0.18.100 255.255.255.0

Thanks in advance for your help.