Deliver any network service you need in minutes. Provide new experiences for customers and employees, and introduce new business processes across the supply chain. The Cisco 4000 Series ISR is a flexible branch platform that gives you the power to show your business what's possible.
Explore the 4000 Series ISR models
The 4000 Series represents a multiservice branch platform architecture. It helps you connect any user over any connection, and offer a superior user experience. Choose the best router for your needs.
Network automation
Automate the configuration, monitoring, and management of your network through the Cisco Application Policy Infrastructure Controller Enterprise Module (APIC-EM).
Network and security services
Network service capabilities include Intelligent Path Control, WAN Optimization, and Intelligent Caching with Akamai. Security services include intrusion prevention and detection, firewall, and VPN.
Operational cost savings
Reduce branch footprint with an all-in-one platform that brings together network, compute, and storage. Reduce downtime during peak loads with the multi-core CPU architecture running Cisco IOS XE.
Broad range of connectivity options
The 4000 Series supports integrated Gigabit Ethernet, T1/E1, T3/E3, PRI, xDSL, and more.
Cisco ISR4431/K9 Specification
Aggregate Throughput
500Mbps to 1Gbps
Total onboard WAN or LAN 10/100/1000 ports
4
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)
NA
Maximum memory DDR3 ECC DRAM (Combined control/services/data planes)
NA
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)
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
AC input voltage
100 to 240 VAC autoranging
AC input frequency
47 to 63 Hz
AC input current range, AC power supply (maximum)
3 to 1.3A
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 PoE power supply (platform only) (watts)
500 with PoE redundant
Maximum endpoint PoE power available from PoE power supply (watts)
250 W with optional redundancy
Customer Reviews
Cisco ISR4431/K9 Specification
Aggregate Throughput
500Mbps to 1Gbps
Total onboard WAN or LAN 10/100/1000 ports
4
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)
NA
Maximum memory DDR3 ECC DRAM (Combined control/services/data planes)
NA
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)
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
AC input voltage
100 to 240 VAC autoranging
AC input frequency
47 to 63 Hz
AC input current range, AC power supply (maximum)
3 to 1.3A
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 PoE power supply (platform only) (watts)
500 with PoE redundant
Maximum endpoint PoE power available from PoE power supply (watts)
250 W with optional redundancy
Customer Reviews
ISR4431/K9 Specification
Cisco ISR4431/K9 Specification
Aggregate Throughput
500Mbps to 1Gbps
Total onboard WAN or LAN 10/100/1000 ports
4
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)
NA
Maximum memory DDR3 ECC DRAM (Combined control/services/data planes)
NA
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)