JDSU offers a broad range of Metro layer testers, systems, and functionality, from traditional Layer 2/Layer 3 (L2/L3) Ethernet- and Internet Protocol (IP)-based network-centric turn-up to advanced features for Layer 4 and above application-centric testing, IPTV testing, and Fibre Channel (FC) testing up to 10 Gb/s. JDSU Metro test solutions help install and maintain SAN-related links and test to ensure that they meet service level agreements (SLAs).