Linux Server -- dual NIC to redundant Switches

[shockwavecs]

I have a LAGG setup, in pfSense, from two NIC ports that feed two separate managed switches (DGS-1210-24) that each feed into the CentOS server that ultimately bonds the connections from both switches.

hardware/software:
- pfSense Gateway with 6 NICs -- 2 configured with link aggregation to appear as one interface called LAGG0.
- 2 x DLINK 1210-24 managed switches.
- Server running CentOS 6.4 with 2 1Gbit NICs in a bond.

I cannot, for the life of me, figure out the proper LAGG/LACP setup and centos NIC bonding modes

Here is the setup I have in a stupid picture:

             Gateway1
          NIC1    NIC2
              \     /
               LAGG0                ---Mode?
              /     \
        DLINK1p24   DLINK2p24     ---Mode?
              \     /
               BOND0                ---Mode?
              /     \
           NIC1     NIC2
              Server1

I tried:
LAGG0 - LACP(802.3ad)
DLINK 1 and DLINK2 - LACP(802.3ad) - Port Trunking sw1p24 <--> sw2p24
BOND0 - Mode 4 - (802.3ad)

Does not work. I pull the plug on the first switch and all traffic halts and then starts doing weird stuff like 20000ms response time and so forth. Any ideas?!?!

disclaimer: I have posted this on the pfSense forums as well.