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Cisco ISR4461-SEC/K9 Integrated Services Router

Brand: Cisco

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Categories: Cisco Router ISR 4000, Cisco Routers, Routers Brand: Cisco

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ISR4461-SEC/K9 is the Cisco ISR 4461 with Security Bundle. The Cisco 4000 Series Integrated Services Routers (ISR) revolutionize WAN communications in the enterprise branch. With new levels of builtin 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.

Quick Spec

Table 1 shows the quick spec.

Model	ISR4461-SEC/K9
Aggregate Throughput	1.5Gbps
Total onboard WAN or LAN 10/100/1000 ports	4
RJ-45-based ports	4
SFP-based ports	4
Enhanced service-module slots	3
Doublewide service-module slots	2
NIM slots	3
OIR (all I/O modules)	Yes
Onboard ISC slot	1
Dimensions (H x W x D)	3.5 x 17.25 x 18.5 in (88.9 x 438.15 x 469.9 mm)
Rack height	2 Rack Units (2RU)

The Modules, Cards, Licenses

Table 2 shows the recommended products.

Model	Description
MEM-4460-8G	8G DRAM (1 DIMM) for Cisco ISR 4460
MEM-4460-16G	16G DRAM (1 DIMM) for Cisco ISR 4461
MEM-4460-32G	32G DRAM (1 DIMM) for Cisco ISR 4460
MEM-FLSH-8GU16G	8G to 16G Flash Memory Upgrade for Cisco ISR 4400
MEM-FLSH-8GU32G	8G to 32G Flash Memory Upgrade for Cisco ISR 4460
NIM-1MFT-T1/E1	Cisco Fourth-Generation Multiflex Trunk Voice and WAN network interface module
NIM-2MFT-T1/E1	2 port Multi-flex Trunk Voice/Clear-channel Data T1/E1 Module
NIM-4MFT-T1/E1	Voice/WAN Module (4-port T1/E1)
NIM-8MFT-T1/E1	Cisco Fourth-Generation Multiflex Trunk Voice and WAN network interface module
NIM-1CE1T1-PRI	Cisco Multiflex Trunk Voice and WAN network interface module
NIM-2CE1T1-PRI	Cisco Multiflex Trunk Voice and WAN network interface module
FL-44-HSEC-K9	U.S. Export Restriction Compliance license for 4400 series

Compare to Similar Items

Table 3 shows the comparison.

Model	ISR4461/K9	ISR4461-SEC/K9
Bundle	None	Security Bundle
Aggregate Throughput	1.5Gbps	1.5Gbps
Total onboard WAN or LAN 10/100/1000 ports	4	4
RJ-45-based ports	4	4
SFP-based ports	4	4
Enhanced service-module slots	3	3
Doublewide service-module slots	2	2
NIM slots	3	3
OIR (all I/O modules)	Yes	Yes
Onboard ISC slot	1	1

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Bundle Security Bundle Aggregate Throughput 1.5Gbps Total onboard WAN or LAN 10/100/1000 ports 4 RJ-45-based ports 4 SFP-based ports 4 Enhanced service-module slots 3 Doublewide service-module slots 2 NIM slots 3 OIR (all I/O modules) Yes Onboard ISC slot 1 Default memory double-data-rate 3 (DDR3) error-correction-code (ECC) DRAM (Combined control/services/data planes) NA Maximum memory DDR3 ECC DRAM (Combined control/services/data planes) NA Default memory DDR3 ECC DRAM (data plane) 4 GB Maximum memory DDR3 ECC DRAM (data plane) 4 GB Default memory DDR3 ECC DRAM (control/services plane) 8 GB Maximum memory DDR3 ECC DRAM (control/services plane) 32 GB Default flash memory 8 GB Maximum flash memory 32 GB External USB 2.0 slots (type A) 2 USB console port -type B mini (up to 115.2 kbps) 1 Serial console port - RJ45 (up to 115.2 kbps) 1 Serial auxiliary port - RJ45 (up to 115.2 kbps) 1 Power-supply options Internal: AC, DC and PoE Redundant power supply Internal: AC, DC and PoE Power Specifications AC input voltage 100 to 240 VAC auto ranging AC input frequency 47 to 63 Hz AC input current range, AC power supply (maximum) 7.1 to 3.0A AC input surge current 60 A peak and less than 5 Arms per half cycle Typical power (no modules) (watts) - Maximum power with AC power supply (watts) 1000W (no PoE) Maximum power with PoE power supply (platform only) (watts) 1000 with PoE redundant 1450 with PoE boost no redundancy Maximum endpoint PoE power available from PoE power supply (watts) 500 W with optional redundancy Maximum endpoint PoE power capacity with PoE boost (watts) 950 W no redundancy Sizes and Weights Dimensions (H x W x D) 3.5 x 17.25 x 18.5 in 88.9 x 438.15 x 469.9 mm) External Power Supply Dimensions (H x W x D) N/A Rack height 2 Rack Units (2RU) Rack-mount 19in. (48.3 cm) EIA Included Rack-mount 23in. (58.4 cm) EIA Optional Wall-mount No Weight with 1, 450-WAC power supply (no modules) - Weight with 1 1,000-WAC power supply+ 1 PoE power module (no other modules) - Weight with AC PS (no modules) - Weight with AC PS with POE (no modules) - Typical weight (fully loaded with modules) - Airflow I/O side to bezel side MTBF (Hours) 480770 Environmental Specifications Operating Conditions Temperature 32 to 104ºF (0 to 40ºC) Altitude (China) 0 – 6,560 ft. (0 – 2,000 m) Altitude (Rest of the world) 0 – 10,000 ft. (0 – 3,050 m) Relative humidity 5% to 85% Short-term humidity 5% to 90%, not to exceed 0.024 kg water/kg of dry air Acoustics: Sound pressure (Typical/maximum) 50.6/73.1 dBA Acoustics: Sound power (Typical/maximum) 58.2/78.8 dBA Nonoperating Conditions Temperature -40 to 158ºF (-40 to 70ºC) Relative humidity 5% to 95% Altitude 15,584 ft (4750m) Regulatory and Compliance Safety UL 60950-1 CAN/CSA C22.2 No. 60950-1 EN 60950-1 AS/NZS 60950-1 IEC 60950-1 EMC 47 CFR, Part 15 ICES-003 Class A EN55032 Class A CISPR32 Class A AS/NZS CISPR 32 Class A VCCI V-3 CNS 13438 EN 300-386 EN 61000 (Immunity) EN 55024, CISPR 24 KN22, KN24 Telecom T1 IC CS-03:2004 TIA-968-B:2009 HKTA 2028:2010 HKTA 2017:2010 HKTA 2015: 2006 G.703:2001 ID0002:2007 IS6100:2004 DSPR Gray Book:2000 DSPR Technical Condition: 2004 E1 AS/ACIF S016: 2001 AS/ACIF S038: 2001 G.703:2001 TBR 4:1995 TBR 12:1993 TBR 13:1996 RRA 2009-38 (RRL 2005-96) IDA TS DLCN:2011 IDA TS ISDN PRA:2005 IS6100: 2004 PTC 220:2008 Ethernet IEEE 802.3 ANSA X3.263 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 Interior Gateway Routing Protocol (EIGRP), Border Gateway Protocol (BGP), BGP Router Reflector, Intermediate System-to-Intermediate System (IS-IS), Multicast Internet Group Management Protocol Version 3 (IGMPv3), Protocol Independent Multicast sparse mode (PIM SM), PIM Source-Specific Multicast (SSM), Resource Reservation Protocol (RSVP), Cisco Discovery Protocol, Encapsulated Remote Switched Port Analyzer (ERSPAN), Cisco IOS IP Service-Level Agreements (IPSLA), Call Home, Cisco IOS Embedded Event Manager (EEM), Internet Key Exchange (IKE), access control lists (ACL), Ethernet Virtual Connections (EVC), Dynamic Host Configuration Protocol (DHCP), Frame Relay (FR), DNS, Locator ID Separation Protocol (LISP), Overlay Transport Virtualization (OTV), Hot Standby Router Protocol (HSRP), RADIUS, authentication, authorization, and accounting (AAA), Application Visibility and Control (AVC), Distance Vector Multicast Routing Protocol (DVMRP), IPv4-to-IPv6 Multicast, MPLS, Layer 2 and Layer 3 VPN, IPsec, Layer 2 Tunneling Protocol Version 3 (L2TPv3), Bidirectional Forwarding Detection (BFD), IEEE 802.1ag, and IEEE 802.3ah 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 (PfR), and Network-Based Application Recognition (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

Frequently Asked Questions

What is Cisco ISR4461-SEC/K9?

The ISR4461-SEC/K9 is a Cisco 4000 Series Integrated Services Router that includes the Security (SEC) license bundle, designed for secure enterprise WAN and branch routing. It combines high-performance routing with integrated security features such as VPN encryption and secure WAN connectivity for enterprise environments.

What does “SEC/K9” mean in ISR4461-SEC/K9?

“SEC/K9” indicates that the router comes with Cisco’s Security Bundle license, which enables enterprise security capabilities like IPsec VPN, encrypted traffic, and advanced WAN protection features. This bundle is widely searched because it simplifies deploying secure branch networks without extra licensing.

What is the ISR4461-SEC/K9 mainly used for?

The ISR4461-SEC/K9 is commonly used for: Enterprise branch WAN edge Secure VPN aggregation MPLS and Internet WAN connectivity Private data center connectivity Hybrid cloud routing It is designed for organizations that need secure, scalable enterprise branch connectivity.

What is the throughput of Cisco ISR4461-SEC/K9?

The ISR4461-SEC/K9 supports up to 1.5 Gbps aggregate throughput, making it suitable for medium to large enterprise branch sites that require secure and stable WAN performance.

Is ISR4461-SEC/K9 SD-WAN ready?

Yes. ISR 4000 Series platforms can run Cisco IOS XE and support SD-WAN deployments, allowing centralized policy control and application-aware routing in modern enterprise WAN architectures.

How is ISR4461-SEC/K9 different from ISR4461/K9?

The main difference is licensing: ISR4461-SEC/K9 → Includes Security bundle (VPN + security features) ISR4461/K9 → Base hardware without bundled security license Organizations needing secure WAN connectivity usually prefer the SEC version.

Why is ISR4461-SEC/K9 still highly searched online?

This model remains popular because: Many enterprises still operate ISR 4000 networks Security bundle licensing is simple and reliable It supports SD-WAN migration paths Strong enterprise branch performance These factors keep online search demand high.

Is Cisco ISR4461-SEC/K9 still supported?

Cisco announced end-of-sale for the ISR4461 Series with last order date January 20, 2025, but support continues until January 31, 2030 for customers with active contracts. This is a very common search topic when enterprises plan upgrades.

Does ISR4461-SEC/K9 support VPN and enterprise security?

Yes. The Security bundle enables key enterprise features such as: IPsec VPN encryption Secure WAN traffic routing Policy-based security services Encrypted branch connectivity This is one of the main reasons this model is heavily searched by enterprise IT teams.

Is Cisco ISR4461-SEC/K9 good for enterprise branch offices?

Yes. It is widely deployed in enterprise branch environments because it offers: Secure WAN routing Modular hardware expansion High reliability Integrated security licensing These features make it a popular choice for enterprise branch and regional hub sites.

What ports and interfaces are available on ISR4461-SEC/K9?

Typical onboard interfaces include: 4 × Gigabit Ethernet RJ-45 ports 4 × SFP-based ports 3 × NIM slots for expansion 3 × enhanced service-module slots This modular design allows flexible WAN and LAN expansion for enterprise deployments.