You can configure a Layer 3 gateway in a chassis with N7K-F132-15 and M-Series modules, by using the proxy routing functionality.
You enable routing on a specific VLAN by configuring a VLAN interface. See the Cisco Nexus 7000 Series NX-OS Interfaces Configuration Guide for more information about Layer 3 routing and VLAN interfaces.
By default, Layer 3 routing and multicasting come up automatically when you have an M-Series module installed in the chassis
with the N7K-F132-15 module. Layer 3 routing, multicasting, and load balancing among the available M-Series works by default
using proxy routing on the M-Series modules.
Optionally, you can specify which physical interfaces on the M-Series modules that you want to use for egress multicast replication,
as well as forcing rebalancing.