Cisco 4000 Series Integrated Services Routers

Data Sheet

Product Overview

The Cisco 4000 Series Integrated Services Routers (ISRs) form a software-defined WAN platform, delivering the performance, security, and convergence capabilities required by today's branch offices. These routers are designed to revolutionize WAN communications for enterprise branch offices, addressing the growing need for application-aware networking in distributed environments with limited IT resources. They facilitate direct communication with private data centers and public clouds over various links, including MPLS VPNs and the internet.

The Cisco 4000 Series ISR platform includes models such as the 4461, 4451, 4431, 4351, 4331, 4321, and 4221.

Figure 1. Cisco 4000 Series Integrated Services Routers

Features and Benefits

The Cisco 4000 Series ISRs are equipped with Cisco SDWAN software capabilities and integrated branch infrastructure, offering excellent throughput and serving as building blocks for next-generation WAN solutions.

Cisco Software-Defined WAN (SD-WAN)

Cisco SD-WAN utilizes a suite of intelligent software services to connect users, devices, and branch offices securely across various WAN transport links. SD-WAN enabled routers like the ISR 4000 dynamically route traffic to the best link based on application and network conditions, ensuring a superior application experience. This provides granular control over application performance, bandwidth utilization, data privacy, and WAN link availability, crucial for mission-critical business operations at the branch.

Cisco Converged Branch Infrastructure

The Cisco 4000 Series ISRs consolidate essential IT functions, including networking, computing, and storage resources. This high-performance integrated router can simultaneously run multiple services such as encryption, traffic management, and WAN optimization without compromising data throughput. New services can be activated on demand simply by changing licenses.

Cisco DNA and Intent-Based Networking

In response to the rapid digital transformation, network teams face pressure to provision, manage, monitor, and troubleshoot diverse devices. Innovations like SD-WAN, Network Function Virtualization (NFV), and Open APIs are driving IT network transformation. Cisco Digital Network Architecture (Cisco DNA) is an open, extensible, software-driven architecture designed to accelerate innovation and deliver superior application experiences. It relies on intent-based networking to automate, simplify, and secure networks.

Intent-based Cisco DNA networks are:

Context-aware: Interpret all data bytes to enhance security, customize experiences, and speed up operations.
Intent-driven: Translate business intent into network configurations for managing and provisioning devices in minutes.
Intuitive: Continuously learn from network data to derive actionable insights, proactively solve problems, and learn from incidents.

Cisco DNA Center provides a centralized management dashboard for the entire network. It allows for end-to-end policy design, provisioning, and configuration from a single interface, simplifying operations and enabling rapid response to business needs. Cisco DNA Analytics and Assurance, along with the Cisco Network Data Platform (NDP), collect information to help customers maximize network utilization.

Cisco DNA brings openness, extensibility, and programmability to all network layers, fostering a rich ecosystem of Cisco and third-party technologies and open APIs.

Table 1 summarizes the key features and benefits of the Cisco 4000 Series ISRs for SD-WAN and converged branch infrastructure.

Table 1. Key Features of Cisco 4000 Series ISRs
Business Requirement	Feature/Solution
Performance	Up to 2 Gbps for multiple software services simultaneously. Backplane architecture supports up to 10 Gbps between high-bandwidth modules. Industry-first distributed multicore architecture with a built-in service plane. Install application-aware services remotely, functioning like dedicated appliances.
WAN Cost Reduction	Integrated SD-WAN solution for cost-effective business-class internet connectivity.
Scalability	Performance models allow for performance upgrades without hardware replacement. Investment protection through software-based upgrades. CapEx budget management for initial deployment.
Secure User Application Experience	ISR-AX "Application Experience" software bundles advanced routing services and network monitoring. Dynamic Multipoint VPN (DMVPN), zone-based firewall, intrusion prevention (Snort and Umbrella Branch), and Cisco Cloud Web Security with OpenDNS protect data, provide authentication credentials, and enable non-backhauled traffic to the data center. Secure boot ensures hardware-based authentication of the boot loader software, preventing unauthorized software from running. Code signing verifies the digital signature of executable files, preventing the execution of tampered or corrupted code. Hardware authentication prevents the use of counterfeit modules by using anti-counterfeit silicon on the board. Authentication failure prevents module startup.
IT Consolidation, Space Savings, and Lower TCO	Converged branch platform integrates routing, switching, virtualization, storage, security, unified communications, WAN optimization, and performance management tools. ISR 4400 Series models (4461, 4451, 4331) support dual integrated power supplies for backup. Optional power supplies provide PoE to endpoints. Modular network interfaces offer various connectivity options for load balancing and network resilience. Online Insertion and Removal (OIR) support for modular interfaces allows for module upgrades without network interruption.
Business Continuity and Resiliency	Cisco Unified Survivable Remote Site Telephony (SRST) provides a resilient backup for Cisco's cloud-based UC services. Support for T1/E1, T3/E3, serial, xDSL, and 1/10 Gigabit Ethernet access links. High-performance analog/digital gateways enable cost-effective VoIP over Session Initiation Protocol (SIP) trunks. Integrated IP PBX (Cisco Unified Communications Express) and Session Border Controller (Cisco Unified Border Element (CUBE)).
Reduced VoIP and Rich Media Communication Costs	Single universal software image with flexible performance on-demand licensing. No additional computing or storage services are required. Supports programmability and automation with Cisco and third-party management tools.
Ease of Management and Support	Single universal software image with flexible performance on-demand licensing. No additional computing or storage services are required. Supports programmability and automation with Cisco and third-party management tools.

Platform Architecture

Table 2 outlines the key hardware architecture features and benefits of the Cisco 4000 Series. The routers run Cisco IOS XE software, widely deployed in demanding networks. The software's service portfolio covers multiple technology areas, including security, WAN optimization, Quality of Service (QoS), and integrated management.

Table 2. Architecture Overview
Architecture Feature	Benefit/Description
Multicore Processor	High-performance multicore processors with emulated Flow Processors (FP) for high-speed WAN connectivity. Scales with added services without performance degradation.
Integrated IP Security (IPsec) VPN Hardware Acceleration	Enhanced scalability. Enables WAN link security and VPN services when combined with optional Cisco IOS XE software security licenses.
Integrated Gigabit Ethernet Ports	Up to four 10/100/1000 Ethernet ports for WAN or LAN. Some ports support Small Form-Factor Pluggable (SFP) for fiber or copper connections. Optional front-panel Gigabit Ethernet ports can provide up to 30W of PoE+ for external devices. A dedicated Gigabit Ethernet port is available for device management.
USB Console Access	Type B mini-USB console port for management when a traditional serial port is unavailable. Traditional console and auxiliary ports are also available.
Optional Integrated Power Supply	Optional integrated power supply modules support inline power (802.3af or 802.3at PoE+) for network modules. Redundant PoE modules enhance fault tolerance.
Optional Integrated Redundant Power System (RPS)	For ISR 4400 Series, optional integrated RPS provides power redundancy, reducing downtime and protecting against power failures. PoE boost mode can increase PoE capacity up to 1000W.
Cisco Enhanced Services Module (SM-X)	Each SM-X slot supports up to 10 Gbps data throughput to the system and 1 Gbps to other module slots. Supports single-width and double-width service modules for flexible deployment options. SM-X slots can be converted to Network Interface Module (NIM) slots using optional carrier cards. Service modules support Online Insertion and Removal (OIR) without network interruption.
Cisco Network Interface Module (NIM)	Up to three NIM slots for flexible configuration. Each NIM slot supports up to two 2 Gbps connections. NIMs support OIR. Some NIMs support Solid-State Drives (SSDs) or Hard Disk Drives (HDDs).
Motherboard Cisco Integrated Services Card (ISC) Slot	Supports Cisco's new high-density packet voice digital signal processor module (PVDM4). Each ISC slot connects to the system architecture via up to 2 Gbps links. Future modules can be installed in ISC slots to enhance system capabilities.
Flash Memory Support	One flash memory slot, upgradeable to 32 GB. ISR 4221 has 8 GB fixed flash memory. Two USB 2.0 ports provide convenient storage.
DRAM	ISR 4400 Series: 4 GB default control plane memory, upgradeable to 16 GB. 2 GB default data plane memory. ISR 4300 Series: 4 GB default memory, upgradeable to 16 GB (8 GB for 4321). ISR 4200 Series: 4 GB fixed DRAM.

Cisco ISR 4000 Series Management

The Cisco network management applications listed in Table 3 are standalone products for managing Cisco network devices. These applications cater to different operational phases. The management features in "Cisco IOS XE Software Embedded Management" are integrated directly into the router's operating system.

Table 3. Cisco DNA Center
Operational Phase	Application	Description
Device Staging and Configuration	WebUI	GUI-based device management tool for Cisco IOS and Cisco IOS XE software. Features wizards for configuring routing, firewalls, VPNs, unified communications, and WAN/LAN.
Network-wide Deployment, Configuration, Monitoring, and Troubleshooting	Cisco Prime™ Infrastructure	Provides comprehensive lifecycle management for wired and wireless access, campus, and branch offices. Offers visibility into end-user connectivity and application performance. Features include inventory, configuration, image management, automated deployment, compliance reporting, best practices integration, and reporting.
Configuration File and Image Staging, Deployment, and Modification	Cisco Configuration Engine	Secure network management product enabling zero-touch image and configuration delivery through template-based management.
Context-Aware Security Configuration and Monitoring	Cisco Prime Security Manager	Management tool for context-aware security configuration and monitoring. Supports single-device and multi-device management. Enables creation of granular context-aware security policies.
Cisco Wide Area Application Service (WAAS) Management	Cisco WAAS Central Manager	Management tool for WAAS (WAN Optimization and Application Acceleration) services. Provides centralized management for WAAS configuration, reporting, and monitoring.

Cisco IOS XE Software Embedded Management Features

Feature	Description
Cisco IOS Embedded Event Manager (EEM)	Provides a customizable, distributed approach for event detection and response. Monitors events and executes EEM actions upon event occurrence or threshold breaches.
Cisco IOS XE IP Service Level Agreement (IP SLA)	Ensures performance for business-critical IP applications and IP services carrying data and voice.
SNMP, Remote Monitoring (RMON), Syslog, NetFlow, IP Flow Information Export (IPFIX)	Network monitoring and accounting tools.

Product Specifications

Table 4 provides a summary of the general product specifications for the Cisco 4000 Series routers.

Table 4. Cisco 4000 Series Integrated Services Router Specifications
Technical Specification	Cisco 4461	Cisco 4451	Cisco 4431	Cisco 4351	Cisco 4331	Cisco 4321	Cisco 4221
Total Throughput (Default)	1.5 Gbps	1 Gbps	500 Mbps	200 Mbps	100 Mbps	50 Mbps	35 Mbps
Total Throughput (Performance License)	3 Gbps	2 Gbps	1 Gbps	400 Mbps	300 Mbps	100 Mbps	75 Mbps
Total Throughput (CEF Only with Boost License)	7 Gbps and above	4 Gbps and above	4 Gbps and above	2 Gbps and above	2 Gbps and above	1.5 Gbps	1.2 Gbps
Onboard WAN or LAN 10/100/1000 Port Count	4	4	4	3	3	2	2
Onboard WAN or LAN 10 Gbps Port Count	2	-	-	-	-	-	-
RJ-45 Based Port Count	4	4	4	3	3	2	2
SFP Based Port Count	4	4	4	3	2	1	1
Modular Service Module Slots	3	2	0	2	1	0	0
Double-Width Service Module SM-X Slot	2 (Single-width SM-X modules are supported)	1 (Single-width SM-X modules are supported)	0	1 (Single-width SM-X modules are supported)	0	0	0
NIM Slots	3	3	3	3	2	2	2
OIR (All I/O Modules)	Supported	Supported	Supported	Supported	Supported	Supported	Not Supported
Onboard ISC Slot Count	1	1	1	1	1	1	Not Supported
Default Memory Double Data Rate 3 (DDR3) Error Correcting Code (ECC) DRAM (Control/Service/Data Plane Combination)	Not Applicable	Not Applicable	Not Applicable	4 GB	4 GB	4 GB	4 GB
Maximum Memory DDR3 ECC DRAM (Control/Service/Data Plane Combination)	Not Applicable	Not Applicable	Not Applicable	16 GB	16 GB	8 GB	4 GB
Default Memory DDR3 ECC DRAM (Data Plane)	4 GB	2 GB	2 GB	Not Applicable	Not Applicable	Not Applicable	Not Applicable
Maximum Memory DDR3 ECC DRAM (Data Plane)	4 GB	2 GB	2 GB	Not Applicable	Not Applicable	Not Applicable	Not Applicable
Default Memory DDR3 ECC DRAM (Control/Service Plane)	8 GB	4 GB	4 GB	Not Applicable	Not Applicable	Not Applicable	Not Applicable
Maximum Memory DDR3 ECC DRAM (Control/Service Plane)	32 GB	16 GB	16 GB	Not Applicable	Not Applicable	Not Applicable	Not Applicable
Default Flash Memory	8 GB	8 GB	8 GB	4 GB	4 GB	4 GB	8 GB
Maximum Flash Memory	32 GB	32 GB	32 GB	16 GB	16 GB	8 GB	8 GB
External USB 2.0 Port Count (Type A)	2	2	2	2	1	1	1
USB Console Port Count (Type B) (Max 115.2 kbps)	1	1	1	1	1	1	0
Power Options	Internal: AC, DC, and PoE	Internal: AC, DC, and PoE	Internal: AC, DC, and PoE	Internal: AC, DC, and PoE	Internal: AC, DC, and PoE	Internal: AC, DC, and PoE	External: AC only
Redundant Power	Internal: AC, DC, and PoE	Internal: AC, DC, and PoE	Internal: AC, DC, and PoE	Internal: AC, DC, and PoE	Internal: AC, DC, and PoE	Internal: AC, DC, and PoE	Not Applicable
Serial Console Port Count (RJ45) (Max 115.2 kbps)	1	1	1	1	1	1	1 (Combo CON/Aux Port)
Serial Auxiliary Port Count (RJ45) (Max 115.2 kbps)	1	1	1	1	1	1	1 (Combo CON/Aux Port)

Power Specifications
Technical Specification	Cisco 4461	Cisco 4451	Cisco 4431	Cisco 4351	Cisco 4331	Cisco 4321	Cisco 4221
AC Input Voltage	100-240 VAC (Auto-ranging)	100-240 VAC (Auto-ranging)	100-240 VAC (Auto-ranging)	100-240 VAC (Auto-ranging)	100-240 VAC (Auto-ranging)	100-240 VAC (Auto-ranging)	100-240 VAC (Auto-ranging)
DC Input Voltage	48-60 V, Max 12 A	48-60 V, Max 12 A	48-60 V, Max 12 A	Not Applicable	24-60 V, 14-5 A	Not Applicable	Not Applicable
AC Input Frequency	47-63 Hz	47-63 Hz	47-63 Hz	47-63 Hz	47-63 Hz	47-63 Hz	47-63 Hz
AC Input Current Range (Max)	7.1-3.0 A	7.1-3.0 A	3-1.3 A	7.1-3.0 A	3-1.3 A	1.5-0.6 A	1.5-0.6 A
AC Input Surge Current	Max 60A, <50A (Half-cycle)	Max 50A, <5 Arms (Half-cycle)	Max 60A, <5 Arms (Half-cycle)	Max 60A, <12 Arms (Half-cycle)	Max 90A, <5 Arms (Half-cycle)	Max 60A, <3 Arms (Half-cycle)	Max 90A, <3 Arms (Half-cycle)
Typical Power (No Modules) (W)	158 W	85 W	48 W	54 W	36 W	24 W	N/A
Maximum AC Power Consumption (W)	1000 W (No PoE)	450 W (No PoE)	250 W (No PoE)	430 W	250 W	125 W	90 W
Maximum DC Power Consumption (W)	437 W (No PoE)	437 W (No PoE)	437 W (No PoE)	437 W (No PoE)	250 W (No PoE)	N/A	N/A
Maximum PoE Power Consumption (Platform Only) (W)	1000 W (Redundant PoE Mode)	1000 W (Redundant PoE Mode)	500 W (Redundant PoE Mode)	990 W	530 W	260 W	Not Supported (PoE Support Not Available)
Maximum Power to Endpoints via PoE (W)	1450 W (Non-redundant PoE Mode)	1450 W (Non-redundant PoE Boost Mode)	1000 W (Non-redundant PoE Boost Mode)	500 W (Optional Redundant Mode)	250 W (Optional Redundant Mode)	120 W	Not Supported (PoE Support Not Available)
Maximum PoE Power for Endpoints with PoE Boost (W)	950 W (Non-redundant Mode)	500 W (Optional Redundant Mode)	500 W (Optional Redundant Mode)	Not Applicable	Not Applicable	Not Applicable	Not Supported (PoE Support Not Available)

Dimensions and Weight
Technical Specification	Cisco 4461	Cisco 4451	Cisco 4431	Cisco 4351	Cisco 4331	Cisco 4321	Cisco 4221
Dimensions (H x W x D)	88.9 x 438.15 x 469.9 mm (3.5 x 17.25 x 18.5 in)	88.9 x 438.15 x 469.9 mm (3.5 x 17.25 x 18.5 in)	43.9 x 438.15 x 507.2 mm (1.73 x 17.25 x 19.97 in)	88.9 x 438.15 x 469.9 mm (3.5 x 17.25 x 18.5 in)	44.45 x 438.15 x 438.15 mm (1.75 x 17.25 x 17.25 in)	44.55 x 369.57 x 294.64 mm (1.75 x 14.55 x 11.60 in)	43.7 x 322.6 x 254 mm (1.72 x 12.7 x 10 in)
External Power Supply Dimensions (H x W x D)	Not Applicable	Not Applicable	Not Applicable	Not Applicable	75 x 30 x 155 mm (2.95 x 1.18 x 6.10 in)	37 x 73 x 152 mm (PN: AA90U-120A-R)	36.5 x 67 x 155 mm (Delta mfg PN: ADP90GRBA)
Rack Height	3 RU	2 RU	1 RU	2 RU	1 RU	1 RU	1 RU
Rack Mount 19-inch (48.3 cm) EIA	Included	Included	Included	Included	Included	Included	Optional
Rack Mount 23-inch (58.4 cm) EIA	Optional	Optional	Optional	Optional	Optional	Not Applicable	Not Applicable
Wall Mount	Not Supported	Not Supported	Supported	Not Supported	Supported	Not Applicable	Not Applicable
Weight (450-W AC Power Supply, Modules Not Installed)	28.8 lb (13.1 kg)	28.8 lb (13.1 kg)	Not Applicable	28.8 lb (13.1 kg)	Not Applicable	Not Applicable	Not Applicable

Environmental Specifications
Technical Specification	Cisco 4461	Cisco 4451	Cisco 4431	Cisco 4351	Cisco 4331	Cisco 4321	Cisco 4221
Operating Temperature	0-40°C (32-104°F)	0-40°C (32-104°F)	0-40°C (32-104°F)	0-40°C (32-104°F)	0-40°C (32-104°F)	0-40°C (32-104°F)	0-40°C (32-104°F)
Altitude (China)	0-2,000 m (0-6,560 ft)	0-2,000 m (0-6,560 ft)	0-2,000 m (0-6,560 ft)	0-2,000 m (0-6,560 ft)	0-2,000 m (0-6,560 ft)	0-2,000 m (0-6,560 ft)	0-2,000 m (0-6,560 ft)
Altitude (Other Regions)	0-3,050 m (0-10,000 ft)	0-3,050 m (0-10,000 ft)	0-3,050 m (0-10,000 ft)	0-3,050 m (0-10,000 ft)	0-3,050 m (0-10,000 ft)	0-3,050 m (0-10,000 ft)	0-3,050 m (0-10,000 ft)
NEBS GR-63-CORE Operating Temperature	Not Applicable	Not Applicable	Not Applicable	Not Applicable	0-55°C (32-131°F) (ISR4331-DC version)	Not Applicable	Not Applicable
Relative Humidity	5-85%	5-85%	5-85%	5-85%	5-85%	5-85%	5-85%
Short-term Humidity	5-9% (Dry air, <0.024 kg water/kg dry air)	5-9% (Dry air, <0.024 kg water/kg dry air)	5-9% (Dry air, <0.024 kg water/kg dry air)	5-9% (Dry air, <0.024 kg water/kg dry air)	5-9% (Dry air, <0.024 kg water/kg dry air)	5-9% (Dry air, <0.024 kg water/kg dry air)	5-9% (Dry air, <0.024 kg water/kg dry air)
Acoustics (Sound Pressure) (Typical/Max)	50.6/73.1 dBA	50.6/73.1 dBA	54.3/79.1 dBA	73.1/74.8 dBA	52.8/74.8 dBA	24.2/51.9 dBA	28.5/53 dBA
Acoustics (Sound Power) (Typical/Max)	Z	58.2/78.8 dBA	57.2/80.8 dBA	58.2/78.8 dBA	61.2/81.6 dBA	31.9/59.9 dBA	41/68 dBA
Non-Operating Temperature	-40-70°C (-40-158°F)	-40-70°C (-40-158°F)	-40-70°C (-40-158°F)	-40-70°C (-40-158°F)	-40-70°C (-40-158°F)	-40-70°C (-40-158°F)	-40-70°C (-40-158°F)
Non-Operating Relative Humidity	5-95%	5-95%	5-95%	5-95%	5-95%	5-95%	5-95%
Non-Operating Altitude	4,750 m (15,584 ft)	4,750 m (15,584 ft)	4,750 m (15,584 ft)	4,750 m (15,584 ft)	4,750 m (15,584 ft)	4,750 m (15,584 ft)	4,750 m (15,584 ft)

Regulatory Compliance
Safety	EMC	Telecom
UL 60950-1, CAN/CSA C22.2 No. 60950-1, EN 60950-1, AS/NZS 60950-1, IEC 60950-1	47 CFR Part 15, ICES-003 Class A, EN55032 Class A, CISPR32 Class A, AS/NZS CISPR 32, VCCI V-3, CNS 13438, EN 300-386, EN 61000 (Immunity), EN 55024, CISPR 24, KN22, KN24, EN 50121-1, EN61000-6-4, EN 50121-4	T1, IC CS-03: 2004, TIA-968-B, ANSI T1.101, ITU-T G.823, G.824, IEEE 802.3, HKTA 2028:2010, HKTA 2017:2010, HKTA 2015:2006, ID0002:2007, IS6100:2004, DSPR Gray Book:2000, DSPR Technical Condition:2004

Cisco IOS XE Software and Licensing

The platform includes a universal Cisco IOS XE image that supports various software licenses for advanced functionality. The XE-SDWAN image provides support for SD-WAN functionality. Licensing options include subscription-based or perpetual licenses for IOS-XE, and subscription-only for XE-SDWAN. Key technology licenses include IP Base, Application Experience (APPX), Unified Communications (UC), and Security (SEC).

Performance on Demand licenses allow for throughput upgrades without hardware changes. High Security (HSEC) licenses remove restrictions on encryption tunnels and throughput imposed by US export regulations.

For detailed information on Cisco IOS XE software licenses and packages, refer to the Cisco 4000 Series configuration guide.

Cisco ISR 4000 Bundles

Cisco ISR 4000 offers various bundles, such as the AX bundle, which integrates licenses for WAAS, Security (SEC), and Data (DATA). The AXV bundle adds voice capabilities. Performance on Demand licenses allow customers to scale performance levels as their business needs grow.

Table 5. Cisco ISR 4000 Feature Bundles
Bundle	Features
Application Experience with Voice (AXV)	AX + Voice Features
Security with Voice Features (VSEC)	Voice Features + Security
Application Experience (AX)	IP Base + Security + Advanced networking protocols (L2TPv3, BFD, MPLS, VRF, VXLAN) (100 Mbps bandwidth) Application Experience: PfRv3, AppNav WAAS, NBAR2, AVC, IP SLA Hybrid Cloud Connectivity: LISP, OTV (100 Mbps bandwidth), VPLS, EOMPLS Intelligent Web Caching: Akamai Connect
Voice Features (V)	IP Base + Unified Communications: CME, SRST, CUBE
Security (SEC)	IP Base + Advanced Security: Zone-based firewall, IPSec VPN, EZVPN, DMVPN, FlexVPN

Table 6. Cisco ISR 4000 Performance Licenses
Platform	Performance on Demand License	Features
ISR4461	FL-4460-PERF-K9	Standard performance upgrade from 1.5 Gbps to 3 Gbps.
ISR4451	FL-44-PERF-K9	Standard performance upgrade from 1 Gbps to 2 Gbps.
ISR4431	FL-44-PERF-K9	Standard performance upgrade from 500 Mbps to 1 Gbps.
ISR4351	FL-4350-PERF-K9	Standard performance upgrade from 200 Mbps to 400 Mbps.
ISR4331	FL-4330-PERF-K9	Standard performance upgrade from 100 Mbps to 300 Mbps.
ISR4321	FL-4320-PERF-K9	Standard performance upgrade from 50 Mbps to 100 Mbps.
ISR4221	FL-4220-PERF-K9	Standard performance upgrade from 35 Mbps to 75 Mbps.

Table 7. Cisco ISR 4000 Boost (Performance) Licenses
Product Number	Description
FL-4220-BOOST-K9 (=)	Boost performance license for 4220 Series routers.
FL-4320-BOOST-K9 (=)	Boost performance license for 4320 Series routers.
FL-4330-BOOST-K9 (=)	Boost performance license for 4330 Series routers.
FL-4350-BOOST-K9 (=)	Boost performance license for 4350 Series routers.
FL-4430-BOOST-K9 (=)	Boost performance license for 4430 Series routers.
FL-44-BOOST-K9 (=)	Boost performance license for 4450 Series routers.
FL-4460-BOOST-K9 (=)	Boost performance license for 4460 Series routers.

Ordering Information

The Cisco ISR 4000 Series is available for purchase. For ordering information, refer to Table 8 and the Cisco ordering portal.

Table 8. Cisco ISR 4000 Series Ordering Information
Product Name	Product Description
ISR4461/K9	Cisco ISR 4461: Onboard GE x4, NIM slots x3, ISC slot x1, SM slots x3, 8 GB Flash Memory (default), 2 GB DRAM (default, data plane), 4 GB DRAM (default, control plane).
ISR4451-X/K9	ISR 4451: Onboard GE x4, NIM slots x3, ISC slot x1, SM slots x2, 8 GB Flash Memory (default), 2 GB DRAM (default, data plane), 4 GB DRAM (default, control plane).
ISR4431/K9	ISR 4431: Onboard GE x4, NIM slots x3, ISC slot x1, 8 GB Flash Memory (default), 2 GB DRAM (default, data plane), 4 GB DRAM (default, control plane).
ISR4351/K9	ISR 4351: Onboard GE x3, NIM slots x3, ISC slot x1, SM slots x2, 4 GB Flash Memory (default), 4 GB DRAM (default).
ISR4331/K9	ISR 4331: Onboard GE x3, NIM slots x2, ISC slot x1, SM slot x1, 4 GB Flash Memory (default), 4 GB DRAM (default).
ISR4321/K9	ISR 4321: Onboard GE x2, NIM slots x2, ISC slot x1, 4 GB Flash Memory (default), 4 GB DRAM (default).
ISR4221/K9	ISR 4221: Onboard GE x2, NIM slots x2, ISC slot x1, 8 GB Flash Memory (default), 4 GB DRAM (default).

For Cisco 4000 Series bundle offerings and other product numbers, contact your local Cisco representative. For Cisco product purchasing information, visit the purchasing guide. To download software, access Cisco Software Center.

Service Integrated Router Migration Options

The Cisco ISR 4000 Series is included in the standard Cisco Technology Migration Program (TMP). Refer to https://www.cisco.com/go/tmp for program details or contact your local Cisco representative.

Warranty Information

Cisco ISR 4000 Series Service Integrated Routers come with a 90-day limited warranty.

Product Sustainability

Information on Cisco's Environmental, Social, and Governance (ESG) initiatives and performance is available in Cisco's CSR and Sustainability Report. Table 9 provides sustainability topics and their references.

Table 9. Product Sustainability
Sustainability Topic	Reference
General	Product material compliance and regulatory information	Materials
	Electronic waste regulations, including product, battery, and packaging	WEEE Compliance
	Product take-back and reuse programs	Cisco Takeback & Reuse Program
	Sustainability contact information	Contact: csr_inquiries@cisco.com
	Environmental specifications	Table 4 Product Specifications
	Regulatory and compliance standards	Table 4 Product Specifications
	MTBF	Table 4 Product Specifications

Cisco and Partner Branch Office Services

Cisco and its certified partners offer services that transform branch office experiences, accelerating business innovation and growth. Cisco's expertise enables the creation of optimal branch offices that are reliable and repeatable. Planning and design services align technology with business goals, improving deployment efficiency. Technical services contribute to operational efficiency, cost reduction, and risk mitigation. Optimization services continuously improve performance and help adopt new technologies. Refer to https://www.cisco.com/go/services for more information.

Cisco SMARTnet® technical support for the Cisco ISR 4000 Series is available through single or multi-year contracts. Support options range from help desk assistance to proactive onsite consulting. All support contracts include:

Major updates for Cisco IOS software (protocol, security, bandwidth, and feature enhancements).
Access to technical support, e-commerce, and product information via the Cisco.com technical library.
24-hour support from a large team of dedicated technical support staff.

Cisco Capital

Cisco Capital provides flexible financing solutions to help achieve business goals and drive business transformation. It helps reduce total cost of ownership (TCO), save money, and foster growth. Cisco's flexible financing solutions are available in over 100 countries for purchasing hardware, software, services, and third-party products, enabling simple and planned payments. Learn more here.

Additional Information

For more details on the Cisco ISR 4000 Series, visit https://www.cisco.com/go/ISR4K or contact your local Cisco representative.

Document Revision History

New Topic or Revised Topic	Description Location	Date
Smart Licensing Revision	IOS-XE Smart Licensing	May 25, 2021
4461 to 2RU to 3RU Change	Sizing Section	December 4, 2018
4461 and SD-WAN Added	IOS XE SD-WAN, Cisco SD-WAN Support Added for 16.9.1 Software Release. Added information on Encrypted Traffic Analytics and Boost Performance Licenses.	November 13, 2018
New ISR 4000 Series Models, ISR 4221 Added. Updated support for all related modules, memory, licenses, and bundles for ISR 4221.	Features and Benefits	August 8, 2018

	Installing and Upgrading Cisco IOS XE Software on 4000 Series ISRs A comprehensive guide detailing the process of installing and upgrading software, including ROMMON images and licenses, on Cisco 4000 Series Integrated Services Routers running Cisco IOS XE.
	Cisco Integrated Services Routers 4000 Series Datasheet Datasheet detailing the Cisco Integrated Services Routers (ISR) 4000 Series, including overview, features, architectural highlights, product specifications, ordering information, and compliance for enterprise branch networking.
	Managing SD-Routing Devices with Cisco SD-WAN Manager Guide A comprehensive guide detailing how to manage and monitor SD-Routing devices using Cisco SD-WAN Manager, covering onboarding, configuration, and troubleshooting for enterprise networks.
	Cisco DNA Software for SD-WAN and Routing Ordering Guide This guide provides comprehensive instructions for ordering Cisco DNA Software subscriptions for SD-WAN and Routing. It covers platform selection, software types, subscription tiers, bandwidth entitlements, and the ordering process, including smart account and virtual account setup, as well as services and security features.
	Managing SD-Routing Devices with Cisco SD-WAN Manager A comprehensive guide on managing and monitoring SD-Routing devices using Cisco SD-WAN Manager, covering onboarding, software management, monitoring, and troubleshooting.
	Cisco Product Catalog Vol. 9 - 2016 Autumn/Winter Edition Explore the latest Cisco networking products, including the Cisco Catalyst 2960-L series switches, designed to transform wired network edges. This catalog covers switches, wireless access points, routers, security appliances, and Meraki solutions for businesses of all sizes.
	Cisco ISR 1100 Series Routers: Data Sheet for 4G, 4GLTE, and 6G Models Detailed data sheet for Cisco ISR 1100 Series routers, including models ISR1100-4G, ISR1100-4GLTE, and ISR1100-6G. Covers features, specifications, software, security, and ordering information for these SD-WAN enabled devices.
	Cisco 819 Series Integrated Services Routers Software Configuration Guide This guide provides comprehensive instructions and details for configuring the software features of Cisco 819 Integrated Services Routers (ISRs), covering product overviews, wireless capabilities, security features, and network configuration.