| Technical Specifications | Cisco 4221 |
| Aggregate Throughput (Default) | 35Mbps |
| Aggregate Throughput (Performance License) | 75 Mbps |
| Aggregate CEF Only1 Throughput (Boost License) | 1.2Gbps |
| Total onboard WAN or LAN 10/100/1000 ports | 2 |
| Total onboard WAN or LAN 10Gbps ports | |
| RJ-45-based ports | 2 |
| SFP-based ports | 1 |
| Enhanced service-module slots | 0 |
| Doublewide service-module slots | 0 |
| NIM slots | 2 |
| OIR (all I/O modules) | No |
| Onboard ISC slot | No |
| Default memory double-data-rate 3 (DDR3) errorcorrection-code (ECC) DRAM (Combined control/services/d ata planes) | 4GB |
| Maximum memory DDR3 ECC DRAM (Combined control/services/d ata planes) | 4GB |
| Default memory DDR3 ECC DRAM (data plane) | NA |
| Maximum memory DDR3 ECC DRAM (data plane) | NA |
| Default memory DDR3 ECC DRAM (control/services plane) | NA |
| Maximum memory DDR3 ECC DRAM (control/services plane) | NA |
| Default flash memory | 8 GB |
| Maximum flash memory | 8 GB |
| External USB 2.0 slots (type A) | 1 |
| USB console port -type B mini (up to 115.2 kbps) | 0 |
| Serial console port - RJ45 (up to 115.2 kbps) | 1 (combo CON/AUX port) |
| Serial auxiliary port - RJ45 (up to 115.2 kbps) | 1 (combo CON/AUX port) |
| Power-supply options | External AC only |
| Redundant power supply | N/A |
| Power Specifications | |
| AC input voltage | 100 to 240 VAC autoranging |
| DC Input Voltage | |
| Input Voltage | NA |
| Input Current | NA |
| AC input frequency | 47 to 63 Hz |
| AC input current range, AC power supply (maximum) | 1.5 to 0.6A |
| Sizes and Weights | |
| Dimensions (H x W x D) | 1.72 x 12.7 x 10 in |
| (43.7 x 322.6 x 254 mm) |
| Wall-mount | Yes |
| Typical weight (fully loaded with modules) | 8.11 lb (3.68kg) |
| MTBF (Hours) | 593270 |
| Environmental Specifications | |
| Operating Conditions | |
| Temperature | 32 to 104F (0 to 40C) |
| Relative humidity | 5% to 85% |
| Nonoperating Conditions | |
| Temperature | -40 to 158F |
| (-40 to 70C) |
| Relative humidity | 5% to 95% |
| Cisco IOS XE Software | |
| Protocols | IPv4, IPv6, static routes, Routing Information Protocol Versions 1 and 2 (RIP and RIPv2), Open Shortest Path First (OSPF), Enhanced IGRP (EIGRP), Border Gateway Protocol (BGP), BGP Router Reflector, Intermediate System-toIntermediate System (IS-IS), Multicast Internet Group Management Protocol Version 3 (IGMPv3), Protocol Independent Multicast sparse mode (PIM SM), PIM Source Specific Multicast (SSM), RSVP, CDP, ERSPAN, IPSLA, Call Home, EEM, IKE, ACL, EVC, DHCP, FR, DNS, LISP, OTV6, HSRP, RADIUS, AAA, AVC, Distance Vector Multicast Routing Protocol (DVMRP), IPv4-to-IPv6 Multicast, MPLS, Layer 2 and Layer 3 VPN, IP sec, Layer 2 Tunneling Protocol Version 3 (L2TPv3), Bidirectional Forwarding Detection (BFD), IEEE802.1ag, and IEEE802.3ah |
| Encapsulations | Generic routing encapsulation (GRE), Ethernet, 802.1q VLAN, Point-to-Point Protocol (PPP), Multilink Point-to-Point Protocol (MLPPP), Frame Relay, Multilink Frame Relay (MLFR) (FR.15 and FR.16), High-Level Data Link Control (HDLC), Serial (RS-232, RS-449, X.21, V.35, and EIA-530), and PPP over Ethernet (PPPoE) |
| Traffic management | QoS, Class-Based Weighted Fair Queuing (CBWFQ), Weighted Random Early Detection (WRED), Hierarchical QoS, Policy-Based Routing (PBR), Performance Routing, and NBAR. |
| Cryptographic Algorithms | Encryption: DES, 3DES, AES-128 or AES-256 (in CBC and GCM modes); Authentication: RSA (748/1024/2048 bit), ECDSA (256/384 bit); Integrity: MD5, SHA, SHA-256, SHA-384, SHA-512 |
