Cisco 1721, SMDS, X.25, Frame Relay, ATM, Ethernet, OSPF, Ethernet, Fast Ethernet, RADIUS, TACACS+, CHAP, PAP, RISC, 16 MB
Cisco 1721. Protokol pengalihan: SMDS, X.25, Frame Relay, ATM, Ethernet, Protokol routing: OSPF, Protokol data link: Ethernet, Fast Ethernet. Metode autentikasi: RADIUS, TACACS+, CHAP, PAP. Arsitektur prosesor: RISC, Memori flash: 16 MB, Memori internal: 48 MB. Indikator LED: Daya. Kompabilitas: IEEE 802.3-LAN, IEEE 802.3U-LAN, IEEE 802.1Q, Persyaratan daya: AC 100/240 V ( 50/60 Hz ), Kecepatan transfer data maksimal: 0,1 Gbit/dt