Cisco 12000

The Cisco 12000, also known as a Gigabit Switch Router or GSR, is a series of large network routers designed and manufactured by Cisco Systems.

[1] Cisco 12000 series routers feature a high-performance switched backplane providing 2.4 Gbit/s across 16 switched ports simultaneously.

[2] The Multi-Service Blade module (introduced for the XR 12000 line) provides firewall and acts as a session border controller.

[3] Certain line cards in Cisco 12000 routers are potentially vulnerable to denial-of-service attacks.

[4] Additionally, certain software versions were vulnerable to specially crafted IPv4 packets.

The Performance Route Processor (PRP) is the core of a GSR.
IP Services Engine (ISE) with four Gigabit Ethernet SFPs on the left.