CISCO2851-SEC/K9

The Cisco CISCO2851-SEC/K9 is an enterprise-class integrated services router tailored for secure branch and mid-sized office deployments. As part of the Cisco 2800 Series Integrated Services Routers, it combines data, voice, and video services in a single external, modular 2U platform. With 512 MB DRAM and 128 MB Flash (expandable to 1 GB and 256 MB), it supports Ethernet, Fast Ethernet, and Gigabit Ethernet, plus IPSec-based VPNs. Cisco IOS Advanced Security adds firewall protection, hardware encryption, MPLS, and URL filtering for mission-critical networks.

Product Features Comparison

Model	CISCO2851-SEC/K9, Cisco 2851 Security Router, Advanced Security, 128MB Flash, 512MB DRAM	C1921-3G-G-SEC/K9, Cisco 1900 Series Router, 2 GE WAN/1 SFP/3G Wireless	CISCO2811-V/K9, Cisco 2811 Voice Bundle, Integrated Services Router, PVDM2-16, 128MB Flash, 512MB DRAM	C2811-VSEC/K9, Cisco 2811 Voice Security Bundle Router, PVDM2-16/128MB Flash/512MB DRAM
Brand	Cisco	Cisco	Cisco	Cisco
Routing Throughput	n/a	n/a	Max Throughput: 45 Mbps	n/a
Interface Configuration	Ethernet, Fast Ethernet, Gigabit Ethernet	2 x 10Base-T/100Base-TX/1000Base-T (RJ-45), 1 x console, 1 x console (mini-USB), 1 x auxiliary, 1 x USB 2.0 Type A, 1 x ADSL2+ WAN (RJ-11)	2 x 10/100 Fast Ethernet	Digital Ports Quantity: 16
Supported Protocol	IPSec	L2TP, IPSec; Routing Protocols: OSPF, IS-IS, BGP, EIGRP, DVMRP, PIM-SM, IGMPv3, GRE, PIM-SSM, static IPv4/IPv6, PBR	Routing Protocols: OSPF, EIGRP, BGP, RIP	Network / Transport Protocol: IPSec
VPN Capability	Hardware encryption; VPN support	VPN support	VPN Support: Yes	Features include VPN, embedded encryption acceleration
Integrated Features	Cisco IOS Advanced Security; firewall protection; MPLS support; URL filtering	Firewall protection, MPLS, VLAN, Syslog, IPv6, QoS (CBWFQ, WRED)	Voice capability with PVDM2-16, firewall, VLAN, rack mountable	Cisco IOS Advanced IP services, firewall, MPLS, VLAN, URL filtering