DC Interconnect. Dual P2P Layer 3 links or Layer 3 PortChannel (Between Nexus 3k)

Hi all,

I am seeking input from anyone who has implemented anything similar. My design is Layer 3 but no requirement for OTV/VxLAN at this point. There will be no stretching of Layer 2. The P2P links are 1Gbps each.

I have some path steering considerations (encrypted tunnel with nightly data replication - so same src/dst) that is leaning me toward dual P2P L3 links but seeking 'devils advocates' as it were to the +/- on the L3 PortChannel as its not something that I have ever used outside a lab environment.

I understand that the Nexus hides the way it implements a L3 PortChannel which is all but the same as a VLAN & SVI. Is my recollection correct that when 1 lane of the PortChannel fills, that traffic will then be placed onto the 2nd lane? Or am I completely off the mark..

As I will have a bandwidth hungry ipsec tunnel with the same src/dst/L4 that will peak at 800Mb over night, so plan on steering remaining traffic to the other 1Gb link using the dual P2P approach.

Thanks in advance for any input available.