The EX9200 line cards support an extensive set of Layer 2 and Layer 3 services that can be deployed in any combination of L2-L3 applications. Each EX9200 line card supports a wide range of Layer 2 and Layer 3 Ethernet functionality including 802.1Q VLAN, link aggregation, Virtual Router Redundancy Protocol (VRRP), L2 to L3 mapping, and port monitoring. Additionally, the line cards support filtering, sampling, load balancing, rate limiting, class of service (CoS), and other key features needed for the deployment of dependable, high-performance Ethernet infrastructure.