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.
File:Cisco-Gigabit-Switch-Router-IP-Services-Engine-4GE-SFP-0a.jpg|thumb|right|IP Services Engine with four Gigabit Ethernet SFPs on the left.

Features

Cisco 12000 series routers feature a high-performance switched backplane providing 2.4 Gbit/s across 16 switched ports simultaneously.
The Multi-Service Blade module provides firewall and acts as a session border controller.

Criticism

Certain line cards in Cisco 12000 routers are potentially vulnerable to denial-of-service attacks. Additionally, certain software versions were vulnerable to specially crafted IPv4 packets.