I am trying to design out how our upcoming hardware upgrade will look and I had a few questions: I am planning on running 2x 3900 ISR's in HSRP at the edge before it heads out via MPLS, however ...

N5K-SPT starts forwarding VLANs 101 and 102 on both Port channels. HSRP for VLANs 101 and 102 on both N7Ks go in active-active state. Root guard blocks VLAN 101 on Po3@N7K-02 and VLAN 102 on Po2 ...