Cisco ISR 4431 4GE 3NIM 8G Flash 4G DRAM IPB 8 Port Router

CiscoSKU: ISR4431/K9


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Cisco ISR 4431 4GE 3NIM 8G Flash 4G DRAM IPB 8 Port Router

• 4 x 10/100/1000Mbps LAN Ports
• 1 GE (Integrated Out of Band)


The Cisco 4000 Family Integrated Services Router (ISR) revolutionizes WAN communications in the enterprise branch. With new levels of built-in intelligent network capabilities and convergence, it specifically addresses 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.


Brand Cisco Small Business
Model ISR4431/K9

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-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, CNS, Call Home, EEM, IKE, ACL, EVC, DHCP, FR, DNS, LISP, OTV, 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
Speed 10/100/1000Mbps
Security UL 60950-1
CAN/CSA C22.2 No. 60950-1
EN 60950-1
AS/NZS 60950-1
IEC 60950-1
LAN Ports 4 x 10/100/1000Mbps
Throughput 500 Mbps to 1 Gbps
Console Port 1 GE (Integrated Out of Band)
Temperature Operating Conditions:
32 to 104ºF (0 to 40ºC) (altitude 0-10000 ft) (altitude 0-3000m)
32 to 95ºF (0 to 35ºC) (altitude 10000-15000ft) (altitude 3000m-4600m)
Nonoperating Conditions: -13 to 158ºF (-25 to 70ºC)
Humidity Operating Conditions:
Relative humidity: 5% to 85%
Short-term humidity: 5% to 90%, not to exceed 0.024 kg water/kg of dry air

Nonoperating Conditions:
Relative humidity: 5% to 95%

Dimensions & Weight
Dimensions 507.24 mm x 438.15 mm x 43.94 mm
Weight 22.4 lbs. (10.2 kg) Typical weight (fully loaded with modules)
Package Contents ISR 4431 with 4 onboard GE, 3 NIM slots, 1 ISC slot, 8GB Flash Memory default, 2 GB DRAM default (data plane), 4 GB DRAM default (control plane)

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