The N55-D160L3-V2 uses a version of the Layer 3 ASIC and enables higher table sizes in a future software release from 8K host entries to 16K host entries or from 4K multicast routes to 8K multicast routes (IPv4).
Cisco Nexus 5548 Layer 3 Daughter Card, an I/O module that can be ordered with the system or as a spare (field upgradable). The Cisco Nexus 5548 Layer 3 Daughter Card provides up to 160 Gbps of Layer 3 forwarding capability (240 million packets per second, which can be shared by all 48 ports on the chassis).