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Model Number:
Cisco ISR 4451 AppX Advanced services router (2GE,2NIM,1SM,8G FLASH,4G DRAM,MPLS, OTV)
1Gbps-2Gbps system throughput, 4 WAN/LAN ports, 4 SFP ports, multi-Core CPU, Dual-power, Security, Voice, WAAS, Intelligrnt WAN, OnePK, AVC, separate control data and services CPUs

Specifications of Cisco 4000 Series Integrated Services Routers

Technical SpecificationsCisco 4451Cisco 4431Cisco 4351Cisco 4331Cisco 4321Cisco 4221
Aggregate Throughput1 Gbps to 2 Gbps500 Mbps to 1 Gbps200 Mbps to 400 Mbps100 Mbps to 300 Mbps50 Mbps to 100 Mbps35 Mbps to 75 Mbps
SFP-based ports443211
Enhanced service-module slots202100
Doublewide service-module slots1 (assumes no singlewide SM-X modules installed)01 (assumes no singlewide SM-X modules installed)000
Maximum memory DDR3 ECC DRAM (Combined control/services/data planes)NANA16 GB16 GB8 GB4 GB
Default memory DDR3 ECC DRAM (data plane)2 GB2 GBNANANANA