The A9K-40GE-TR is a line card for the Cisco ASR 9000 Series routers, providing high-density Gigabit Ethernet connectivity. It features 40 ports of 1 Gigabit Ethernet SFP, despite the “40GE” in its name, which can be misleading. The “TR” designation signifies “Transport Optimized,” indicating its suitability for service provider and carrier Ethernet applications. It’s designed for environments requiring a large number of 1 Gigabit Ethernet connections.
