Cisco 4221/K9 Integrated Services Router



The Cisco 4000 Series Integrated Services Routers (ISR) revolutionize WAN communications in the enterprise branch. With new levels of built-in intelligent network capabilities and convergence, the routers specifically address the growing need for application-aware networking in distributed enterprise sites. These locations tend to have lean IT resources. But they often also have a growing need for direct communication with both private data centers and public clouds across diverse links, including Multiprotocol Label Switching (MPLS) VPNs and the Internet.

Key Specifications

General Information:

 Aggregate Throughput: 35 Mbps to 75 Mbps


Flash Memory Installed Size: 8 GB 

RAM (installed): 4 GB

Memory Note: 4GB DDR3 ECC DRAM (maximum) 8GB Flash (maximum)

(2) GbE RJ-45
(1) SFP
(2) NIM slots
(1) USB 2.0 Type A
(1) serial console/auxiliary RJ-45 combo
Networking Protocol: Gigabit Ethernet
Remote Management Protocol: RMON, SNMP
Transport Protocol: DHCP, IPSec, PPPoE
Enclosure Type
Rack-mountable - modular - 1U
WAN Ports Qty
Routing Protocol
OSPF, IS-IS, RIP-1, RIP-2, BGP, EIGRP, DVMRP, PIM-SM, IGMPv3, GRE, PIM-SSM, static IPv4 routing, static IPv6 routing, policy-based routing (PBR), IPv4-to-IPv6 Multicast
VPN support, VLAN support, Syslog support, IPv6 support, Class-Based Weighted Fair Queuing (CBWFQ), Weighted Random Early Detection (WRED), wall mountable, Access Control List (ACL) support, Quality of Service (QoS), RADIUS support, NetFlow, IPFIX
AC 120/230 V (50/60 Hz)
More Information
Product Name Cisco 4221/K9 Integrated Services Router
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