Probably as a best practice it's better to split the poon on two parts (as from this presentation http://www.cisco.com/en/US/prod/collateral/iosswrel/ps6537/ps6554/ps6600/ps6641/prod_presentation0900aecd803116a7.pdf )Anyway as stated here:http://www....
I suppose that both ISR are default gateaway for voice vlan and data vlan.In this scenario you can set up both ISR with DHCP-Server service enabled for each vlan.The pool can be the same, then after release an IP the DHCP server check if it's pingabl...
Sorry, just interpret my previous answer as "Configure on the server side LACP or Static port-channel (channel-group mode on) because are better suited for bandwith optimization and fast failure recovery."
The only restriction is that Dynamic Routing between External L3 Devices and vPC Peers over vPC or vPC VLANs is not supported.further information in the Cisco Live virtual "BRKDCT-2951 - Deploying Nexus 7000 in Data Center Networks" presentation.