The Cisco 4431, also called the Cisco ISR 4431, is a router in the 4400 Series of the Cisco 4000 Family of Integrated Services Routers, and the order code is ISR4431/K9. It has four onboard Gigabit Ethernet ports, three NIM slots and one ISC slot for a PVDM4 voice module. The default configuration is 8 GB of flash, 2 GB of data-plane DRAM and 4 GB of control-plane DRAM. Data-plane memory does not upgrade, and control-plane memory goes to 16 GB. The internal flash is an eMMC device that supports 8, 16 or 32 GB, and the 4431 takes the eUSB flash upgrade.
The 4431 supports up to three each of the NIM-ES2-4, NIM-ES2-8 and NIM-ES2-8-P Gigabit Ethernet LAN switch NIMs, which gives up to 24 non-PoE ports. The ISC slot takes PVDM4-32, PVDM4-64, PVDM4-128 or PVDM4-256, and SM-X-PVDM modules are not supported. Cisco WAN MACsec runs on the NIM-2GE-CU-SFP and needs the Security and HSEC licenses. The router does not provide front-panel PoE+.
Internal AC, DC and PoE power supplies are available, and a second supply gives redundancy. The supplies are hot-swappable. AC input is 100 to 240 V AC, and the DC supply takes -48 to -60 V DC with a 350 W maximum. The PoE supplies are PWR-4430-POE-AC= and PWR-4430-POE-AC/2=, and two PoE supplies in boost mode provide up to 500 W for endpoints.
Aggregate throughput is 500 Mbps by default, and the FL-44-PERF-K9 license raises it to 1 Gbps. FL-4430-BOOST-K9 raises CEF-only throughput to up to 3.4 Gbps, as tested for IP routing at IMIX. One Cisco IOS XE Universal image runs on the router, and the HSEC license removes the limit on secure tunnels. Bundles for the 4000 Family are SEC, V, VSEC, AX and AXV. Related pages cover the Cisco 4331, Cisco 4321, Cisco 2901 and Cisco 2811 routers, and the full range is on the networking page.
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Cisco 4431 parts we supply
Routers (1)
- ISR4431/K9: Cisco ISR 4431, 4 onboard GE, 3 NIM slots, 1 ISC slot, 8 GB flash, 2 GB data-plane DRAM, 4 GB control-plane DRAM
Network interface modules (4)
- NIM-ES2-4: 4-port Gigabit Ethernet LAN switch NIM, up to 3 per 4431
- NIM-ES2-8: 8-port Gigabit Ethernet LAN switch NIM, up to 3 per 4431
- NIM-ES2-8-P: 8-port Gigabit Ethernet LAN switch NIM with PoE, up to 3 per 4431
- NIM-2GE-CU-SFP: 2-port Gigabit Ethernet NIM, dual mode SFP or RJ45, WAN MACsec
Voice DSP modules (4)
- PVDM4-32(=): 32-channel voice DSP module, ISC slot
- PVDM4-64(=): 64-channel voice DSP module, ISC slot
- PVDM4-128(=): 128-channel voice DSP module, ISC slot
- PVDM4-256(=): 256-channel voice DSP module, ISC slot
Power supplies (2)
- PWR-4430-POE-AC=: Cisco 4431 PoE power supply
- PWR-4430-POE-AC/2=: Cisco 4431 PoE power supply for the redundant slot
Performance licenses (2)
- FL-44-PERF-K9: Performance license for the 4431, 500 Mbps to 1 Gbps
- FL-4430-BOOST-K9(=): Booster performance license for the 4430 Series, up to 3.4 Gbps CEF