• Model-ISR4431-DNA
  • Description-Cisco ISR 4431 (4GE,3NIM,8G FLASH,4G DRAM,IPB) with DNA sub
  • Dimensions-1.72 x 12.7 x 10″(43.7 x 322.6 x 254 mm)
  • Aggregate Throughput (Default)-500 Mbps
  • Aggregate Throughput (Performance License)-1 Gbps
  • Aggregate CEF Only[5] Throughput (Boost License)-Over 4 Gbps


Predictable performance

Predictable performance

High-availability architecture designed for mission-critical branches that delivers predictable performance at maximum speeds, offering modularity to connect from any remote location.


Network services

Network services

Deploy key integrated network services for your branch in minutes, virtually or on-premises, without compromising performance.


Simplified management

Simplified management

Configure and monitor your network and enforce business policies through Cisco DNA Center and Cisco SD-WAN. Simplify network automation and turn hours of work into seconds.


Threat protection

Threat protection

Protect your branch site across the LAN and WAN and in the cloud with security integrated into the router. You no longer need a separate security appliance.

SKU: CISCO ISR 4431-DNA Category:


Sub Brands



Product Code ISR4431-DNA
Description Cisco ISR 4431 (4GE,3NIM,8G FLASH,4G DRAM,IPB) with DNA sub
Aggregate Throughput (Default) 500 Mbps
Aggregate Throughput (Performance License) 1 Gbps
Aggregate CEF Only Throughput (Boost License) Over 4 Gbps
Total onboard WAN or LAN 10/100/1000 ports 4
Total onboard WAN or LAN 10Gbps ports N/A
RJ-45-based ports 4
SFP-based ports 4
Enhanced service-module slots 0
Doublewide service-module slots 0
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) N/A
Maximum memory DDR3 ECC DRAM (Combined control/services/data planes) N/A
Default memory DDR3 ECC DRAM (data plane) 2 GB
Maximum memory DDR3 ECC DRAM (data plane) 2 GB
Default memory DDR3 ECC DRAM (control/services plane) 4 GB
Maximum memory DDR3 ECC DRAM (control/services plane) 16 GB
Default flash memory 8 GB
Maximum flash memory 32 GB
External USB 2.0 slots (type A) 1
USB console port -type B mini (up to 115.2 kbps) 2
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 autoranging
DC Input Voltage

Input Voltage

Input Current


48–60 V

12 A Max

AC input frequency 47 to 63 Hz
AC input current range, AC power supply (maximum) 3 to 1.3 A


AC input surge current 60 A peak and less than 5 Arms per half cycle
Typical power (no modules) (watts) 65
Maximum power with AC power supply (watts) 250 (no PoE)
Maximum power with DC power supply (watts) 437 (no PoE)
Maximum power with PoE power supply (platform only) (watts) 500 with PoE redundant

1000 with PoE boost no redundancy

Maximum endpoint PoE power available from PoE power supply (watts) 250 W with optional redundancy
Maximum endpoint PoE power capacity with PoE boost (watts) 500 W no redundancy
Dimensions(H x W x D) 1.73 x 17.25 x 19.97 in(43.9 x 438.15 x 507.2 mm)
Rack height 1 Rack Units (1RU)
Rack-mount 19in. (48.3 cm) EIA Included
Included Optional
Wall-mount Yes
Airflow I/O side to bezel side
MTBF (Hours) 512970

Environmental Specifications

Temperature 32º 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)
Short Term Temperature upto 6560ft per NEBS GR-63-CORE N/A
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/


54.3/79.1 dBA
57.2/80.8 dBA 57.2/80.8 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


C22.2 No.


EN 60950-1



IEC 60950-1

EMC 47 CFR, Part 15


Class A


Class A


Class A


Class A


CNS 13438

EN 300-386

EN 61000 (Immunity)

EN 55024, CISPR 24

KN22, KN24

Cisco IOS XE Software


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-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), RSVP, CDP, ERSPAN, IPSLA, Call Home, EEM, IKE, ACL, EVC, DHCP, FR, DNS, LISP, OTV[6], 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


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


TIA-968-B CS-03 ANSI T1.101 ITU-T G.823,G.824 IEEE 802.3 RTTE Directive Homologation requirement s vary by country and interface type.


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