Cisco 4321 Integrated Services Router

The Cisco 4321 Integrated Services Router, ordered as ISR4321/K9 and also written ISR 4321, belongs to the 4300 Series of the Cisco 4000 Family. It is a 1 RU router with two onboard 10/100/1000 Gigabit Ethernet ports, two NIM slots and one onboard ISC slot, and it has no SM-X service-module slot. The chassis comes with 19-inch rack-mount brackets, and mounting holes under the chassis allow wall mounting. Cisco also sells the 4321 as the ISR4321-SEC/K9, ISR4321-V/K9, ISR4321-VSEC/K9, ISR4321-AX/K9 and ISR4321-AXV/K9 bundles.

The 4321 ships with 4 GB of DDR3 ECC DRAM soldered to the motherboard, and 8 GB is the maximum, reached through the MEM-4320-4GU8G factory upgrade. Flash starts at 4 GB and reaches 8 GB with the MEM-FLSH-4U8G eUSB upgrade, and fitting an extra flash module switches off the onboard flash. The back panel has one external USB 2.0 Type A port, a USB mini Type B console port, an RJ-45 console port and an RJ-45 auxiliary port. Each NIM slot offers up to two 2 Gbps connections, and NIMs support online insertion and removal. The NIM-ES2-4 Gigabit Ethernet switch module fits up to two per router, and special NIMs add SSD or hard disk storage.

Out of the box the 4321 handles 50 Mbps of aggregate throughput, and the FL-4320-PERF-K9 performance license raises that to 100 Mbps as a software change. A booster license, FL-4320-BOOST-K9, covers CEF-only throughput on the onboard Gigabit Ethernet ports. The router runs Cisco IOS XE from one universal image with IP Base active by default. The Security (SL-4320-SEC-K9), Unified Communications (SL-4320-UC-K9) and Application Experience (SL-4320-APP-K9) packages switch on by license, and the HSEC license FL-4320-HSEC-K9 is a separate requirement for full crypto functionality. Smart Licensing starts at IOS XE 16.6.1, and Cisco DNA Essentials and Cisco DNA Advantage subscriptions apply to the ISR 4000 series.

Power comes from an external AC supply rated 100 to 240 V AC at 47 to 63 Hz. PWR-4320-AC is the default part, and PWR-4320-POE-AC is the PoE model, needed to power ports on the NIM-ES2-8-P switch module. The 4321 has no DC or redundant power option. Cisco builds its voice bundles for the 4321 without a PVDM4 module, while PVDM4 modules are supported on 4000 Series ISRs other than the 4461.

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Cisco 4321 parts we supply

Routers and bundles (6)

• ISR4321/K9: Cisco 4321 Integrated Services Router, 2 onboard GE, 2 NIM slots, 1 ISC slot, 4 GB DRAM and 4 GB flash
• ISR4321-VSEC/K9: Cisco 4321 Voice Security bundle with UC and SEC licenses, CUBE-10
• ISR4321-SEC/K9: Cisco 4321 Security bundle with SEC license
• ISR4321-V/K9: Cisco 4321 UC bundle with UC license
• ISR4321-AX/K9: Cisco 4321 AX bundle with APP and SEC licenses
• ISR4321-AXV/K9: Cisco 4321 AXV bundle with APP, UC and SEC licenses

Memory and flash (5)

• MEM-4320-4G: 4 GB DRAM for the Cisco 4321, soldered on the motherboard
• MEM-4320-4GU8G: 4 GB to 8 GB DRAM upgrade for the 4321 (fixed 4 GB plus 4 GB added)
• MEM-FLSH-4G: 4 GB eUSB flash for the 4300 Series, soldered on the motherboard
• MEM-FLSH-4U8G: 4 GB to 8 GB eUSB flash upgrade for the 4300 Series
• MEM-FLSH-8G=: 8 GB eUSB flash spare for the 4300 Series

Network interface modules and storage (11)

• NIM-ES2-4: 4-port Gigabit Ethernet LAN switch NIM, up to 2 per 4321
• NIM-ES2-8: 8-port Gigabit Ethernet LAN switch NIM, up to 2 per 4321
• NIM-ES2-8-P: 8-port Gigabit Ethernet LAN switch NIM with PoE, up to 2 per 4321
• NIM-4FXS: 4-port FXS analog voice NIM for 4300 Series ISRs
• NIM-4FXO: 4-port FXO analog voice NIM for 4300 Series ISRs
• NIM-SSD(=): NIM carrier card for SSD drives
• SSD-SATA-200G(=): 200 GB SATA SSD for the NIM-SSD
• NIM-BLANK=: Blank faceplate for a NIM slot
• NIM-SLOT-DIVIDER=: NIM slot divider (guide)
• PVDM4-32(=): 32-channel packet voice DSP module, motherboard slot
• PVDM4-64(=): 64-channel packet voice DSP module, motherboard slot

More interface modules and SFPs (17)

• NIM-1GE-CU-SFP: 1-port Gigabit Ethernet NIM, dual mode SFP or RJ45
• NIM-2GE-CU-SFP: 2-port Gigabit Ethernet NIM, dual mode SFP or RJ45
• NIM-2MFT-T1/E1: 2 port Multi-flex Trunk Voice/Clear-channel Data T1/E1 Module
• NIM-2FXSP: 2-port FXS NIM
• NIM-VAB-A: Multi-mode VDSL2 and ADSL2/2+ NIM, Annex A
• NIM-4T: 4-port serial WAN interface NIM
• NIM-16A: 16-port Asynchronous Module
• GLC-EX-SMD: 1000BASE-EX SFP transceiver module, SMF, 1310nm, DOM
• GLC-LH-SMD: GE SFP, LC connector LX/LH transceiver; with DOM
• GLC-SX-MMD: GE SFP, LC connector SX transceiver; with DOM
• GLC-FE-100FX: 100BASE-FX SFP for FE port
• GLC-FE-100LX: 100BASE-LX SFP for FE port
• GLC-GE-100FX: 100FX SFP on GE ports
• GLC-BX40-U-I: 1000BASE-BX40 SFP, 1310NM
• GLC-BX-U: 1000BASE-BX SFP, 1310NM
• GLC-TE: SFP transceiver, 10/100/1000BASE-T
• GLC-T: SFP transceiver, 10/100/1000BASE-T

Power, cooling and mounting (8)

• PWR-4320-AC(=): AC power supply for the Cisco 4321 (default)
• PWR-4320-POE-AC(=): AC power supply with PoE module for the Cisco 4321
• ACS-4320-FANASSY=: Fan assembly spare for the 4321
• ACS-4320-BEZEL=: Front bezel for the 4321
• ACS-4320-RM-19=: 19-inch rack-mount kit for the 4321
• CAB-CONSOLE-RJ45: Console cable, 6 ft, RJ-45 to DB9F
• CAB-AUX-RJ45: Auxiliary cable, 8 ft, RJ-45 to DB25M
• CAB-CONSOLE-USB: Console cable, 6 ft, USB Type A to mini-B

Software licenses (8)

• SL-4320-IPB-K9: IP Base license for the 4321
• SL-4320-SEC-K9(=): Security license for the 4321
• SL-4320-SECNPE-K9: Security license, no payload encryption, for the 4321
• FL-4320-HSEC-K9(=): U.S. export compliance security license (HSEC) for the 4321
• SL-4320-UC-K9: Unified Communications license for the 4321
• SL-4320-APP-K9: Application Experience license for the 4321
• FL-4320-PERF-K9(=): Performance license for the 4321, 50 Mbps to 100 Mbps
• FL-4320-BOOST-K9(=): Booster performance license for the 4320 Series

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