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EIGRP within data center

I am looking for best practice advice.  In a network I have two Nexus 5548UP switches that are connected together with a port channel.  I have created a layer 3 link over the port channel using vlan 1152   A management vlan has been also been created on the switches with vlan 211  A Cisco ASA firewall is connected to the Nexus1 switch and has the inside intereface configured with an IP from the management network.  A Cisco Router is connected to the Nexus2 switch and the LAN interface is also configured with an IP from the management network.  EIGRP has been configured on all 4 devices.  On the Nexus switches all svi's have been configured with the passive-interface command with the exception of the Vlan 1152 SVI's and the Vlan 211 SVI's.  I am using the vlan 211 SVI IP for my EIGRP router-id.  With this configuration the Nexus switches are neighbored twice with each other on both the network and the network.  I would like to reduce that down to where they only neighbor using the layer 3 network but if I put the vlan 211 svi's in passive mode then it will break the neighborship with my ASA and router.  To overcome this issue would I be better creating loopback interfaces to use as my router id and also making the links between my switch and ASA plus switch and router layer 3?  Is there a better way to do this?  I have attached two images, the first being the original design and the second being the proposed design.  I have also provided the neighbor show commands from original design which lists all the neighbors being formed.

Nexus1# sh ip eigrp neighbor
IP-EIGRP neighbors for process 100 VRF default
H   Address                 Interface       Hold  Uptime  SRTT   RTO  Q  Seq
                                            (sec)         (ms)       Cnt Num
3            Vlan211         14   6w6d      3    200   0   439537
2            Vlan211         14   6w6d      2    200   0   439536
1          Vlan1152        14   6w6d      1    200   0   439535
0           Vlan211         14   11w5d     1    200   0   293289



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