... for future applications. The Cisco 1921 provides significantly enhanced modular capabilities that offer you investment protection. You can easily ... Ethernet, Fast Ethernet, Gigabit EthernetDevice Type RouterEnclosure Type Desktop, rack-mountable - modular - 1UFeatures Firewall protection, VPN support, MPLS support, VLAN ... . Cisco 1921 Integrated Services Router - router - desktop, rack-mountable