Need help with LACP Trunking on 4948 switch

Hello Experts,
I am trying to run an LACP trunk between an old 4948 switch running 12.2
IOS, and a new 8900 F5 LTM. The trunk comes up, all the interfaces come up,
no errors etc....but there is zero input traffic:

5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 6000 bits/sec, 10 packets/sec.

The F5 LTM is set to flow control off. Even if I try changing the flow
control settings, it doesn't do anything. On the switch side I see:
input flow-control is off, output flow-control is unsupported

I tried forcing the output flowcontrol to off but on this 4948, there is
only receive/input option, nothing for transmit/send/output flowcontrol.

Here is the switch config (port channel and one of the interfaces in this
port channel):

interface Port-channel5
 switchport
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 322
 switchport mode trunk
 logging event link-status
 logging event trunk-status

interface GigabitEthernet1/6
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 322
 switchport mode trunk
 service-policy input DH-ING
 logging event link-status
 speed 1000
 duplex full
 tx-queue 1
   bandwidth percent 5
 tx-queue 2
   bandwidth percent 25
 tx-queue 3
   priority high
   shape percent 30
 tx-queue 4
   bandwidth percent 40
 spanning-tree portfast
 spanning-tree bpduguard enable
 channel-group 5 mode active

Any help/insight will be most appreciated!

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Received on Wed May 28 2014 - 18:13:06 ART