Cisco 4000 Series ISR family is featured branch router that were designed to meet Gigabit forwarding performance needs while running the broadest set of network and application services on a single platform.
Quick List
Cisco 4000 Series IRS Family Platforms and Part Numbers
Cisco 4000 Series ISR Power Supply Options
Cisco 4000 Series ISR DRAM
Cisco 4000 Series ISR Flash Memory
Cisco 4000 Series ISR Fan-related Products
Cisco ISR 4000 Feature Bundles
Cisco ISR 4000 Performance Licenses
Get Brand New Cisco 4000 Routers with Big Discount
The Cisco 4000 Family contains five platforms: the Cisco 4451, 4431, 4351, 4331, and 4321 ISRs, which differ primarily in performance capabilities and in the number of Network Interface Module (NIM) and Enhanced Service Module (SM-X) slots supported.
You can order the platform as a base system or as a bundled system for security, unified communications, or application services. This ordering guide focuses on base system configurations and options, but most of the elements are applicable to bundle ordering as well.
Cisco 4000 Series IRS Family Platforms and Part Numbers
| Part Number | Product Description | Technical Service Part Number (Cisco SMARTnet 8x5xNBD) |
| ISR4451-X/K9 | Cisco ISR 4451 (4 GE, 3 NIM, 2 SM, 8 GB FLASH, 2 GB DRAM (data plane), 4G DRAM (control plane) | CON-SNT-ISR45XK9 |
| ISR4431/K9 | Cisco ISR 4451 (4 GE, 3 NIM, 8 GB FLASH, 2 GB DRAM (data plane), 4 GB DRAM (control plane) | CON-SNT-ISR4431K |
| ISR4351/K9 | Cisco ISR 4351 (3 GE, 3 NIM, 2 SM, 4 GB FLASH, 4 GB DRAM (default memory) | CON-SNT-ISR4351K |
| ISR4331/K9 | Cisco ISR 4331 (3 GE, 2 NIM, 1 SM, 4 GB FLASH, 4 GB DRAM (default memory) | CON-SNT-ISR4331K |
| ISR4321/K9 | Cisco ISR 4321 (2 GE, 2 NIM, 4 GB FLASH, 4 GB DRAM (default memory) | CON-SNT-ISR4321K |
| * 8x5xNBD service is delivered 8 hours a day, 5 days a week (weekdays), by next business day. | ||
You can order Cisco 4000 Series ISR platforms with dual power supplies that may be configured for power-supply redundancy or increased power for Power over Ethernet (PoE). The primary and secondary power supplies can be AC, PoE, DC, or any combination of the three. In order to power PoE ports on a switch module integrated into a router, you must order the router with a PoE power supply.
You can order the power supplies listed in the table below with the system or as spares. The PoE power supply on the Cisco 4000 Series ISRs requires a C15-rated power cable to accommodate the higher current rating of these power supplies.
Cisco 4000 Series ISR Power Supply Options (Offered with the System and as Spares)
| Platform | Part Number | Description |
| Cisco 4451 ISR | PWR-4450-AC(=) | AC Power Supply for Cisco ISR 4450 and 4350 (Default) |
| PWR-4450-AC/2 | Secondary AC Power Supply for Cisco ISR 4450Use PWR-4450-AC= as spare | |
| PWR-4450-POE-AC(=) | AC Power Supply with POE Module for Cisco ISR 4450 and 4350 | |
| PWR-4450-POE-AC/2 | Secondary AC Power Supply with POE Module for Cisco ISR 4450Use PWR-4450-POE-AC= as spare | |
| PWR-4450-DC(=) | DC Power Supply for Cisco ISR 4450 and 4350 | |
| PWR-4450-DC/2 | Redundant DC Power Supply for Cisco ISR 4450Use PWR-4450-DC= as spare | |
| Cisco 4431 ISR | PWR-4430-AC(=) | AC Power Supply for Cisco ISR 4430 (Default) |
| PWR-4430-AC/2 | Secondary AC Power Supply for Cisco ISR 4430Use PWR-4430-AC= as spare | |
| PWR-4430-POE-AC(=) | AC Power Supply with POE Module for Cisco ISR 4430 | |
| PWR-4430-POE-AC/2 | Secondary AC Power Supply with POE Module for Cisco ISR 4430Use PWR-4430-POE-AC= as spare | |
| PWR-4430-DC(=) | DC Power Supply for Cisco ISR 4430 | |
| PWR-4430-DC/2 | Redundant DC Power Supply for Cisco ISR 4430Use PWR-4430-DC= as spare | |
| Cisco 4351 ISR | PWR-4450-AC(=) | AC Power Supply for Cisco ISR 4450 and 4350 (Default) |
| PWR-4450-POE-AC(=) | AC Power Supply with POE Module for Cisco ISR 4450 and 4350 | |
| PWR-4450-DC(=) | DC Power Supply for Cisco ISR 4450 and 4350 | |
| Cisco 4331 ISR | PWR-4330-AC(=) | AC Power Supply for Cisco ISR 4330 (Default) |
| PWR-4330-POE-AC(=) | AC Power Supply with POE Module for Cisco ISR 4330 | |
| Cisco 4321 ISR | PWR-4320-AC(=) | AC Power Supply for Cisco ISR 4320 (Default) |
| PWR-4320-POE-AC(=) | AC Power Supply with POE Module for Cisco ISR 4320 |
For the Cisco 4400 & 4350 Series ISR, you can also enable PoE on two of the front-panel Gigabit Ethernet ports.
Cisco 4000 Series ISR Power Supply Options (Offered with the System and as Spares)
| Platform | Part Number | Description |
| Cisco 4451, 4431 & 4351 ISR | PWR-GE-POE-4400(=) | POE Module for On Board GE for Cisco ISR 4400 & 4350. |
Cisco 4400 Series ISRs (models 4451 and 4431) ship with a default memory of 2 GB of DRAM for the data plane, 4 GB of DRAM for the control plane, and 8 GB of flash memory. The 4 GB DRAM configuration for the control plane is derived by the installation of two symmetrical dual in-line memory modules (DIMMs) of 2 GB in each of the memory slots.
The Cisco 4300 Series ISRs (4351, 4331, and 4321) ship with a default memory of 4 GB of DRAM for both the control plane and data plane and 4 GB of flash memory. In the 4351 and 4331, the 4-GB DRAM configuration is derived by the installation of two symmetrical DIMMs of 2 GB in each of the memory slots of the Cisco 4351 and 4331 ISR platforms. In the Cisco 4321 ISR, 4 GB of DRAM is soldered on to the motherboard and is not serviceable.
When upgrading memory to higher densities, both memory slots must be populated with DIMMs of the same type and density for high system performance. The Cisco 4000 Series platform does not support the use of different DRAM densities in the two available DIMM slots or the use of only one slot.
Cisco 4000 Series ISR DRAM (Factory Upgrades)
| Platform | Part Number | Description |
| Cisco 4400 Series Routers (4451 and 4431) | MEM-4400-DP-2G | 2G DRAM (1 DIMM) for Cisco ISR 4400 Data Plane (Default)Use MEM-4400-2G= as spare |
| MEM-4400-4G | 4G DRAM (2G+2G) for Cisco ISR 4400 (Default) | |
| MEM-4400-4GU8G | 4G to 8G DRAM Upgrade (4G+4G) for Cisco ISR 4400 | |
| MEM-4400-4GU16G | 4G to 16G DRAM Upgrade (8G+8G) for Cisco ISR 4400 | |
| Cisco 4350 and 4330 Series Routers (4351 and 4331) | MEM-4300-4G | 4G DRAM (2G+2G) for Cisco ISR 4330 and 4350 (Default) |
| MEM-4300-4GU8G | 4G to 8G DRAM Upgrade (4G+4G) for Cisco ISR 4330 and 4350 | |
| MEM-4300-4GU16G | 4G to 16G DRAM Upgrade (8G+8G) for Cisco ISR 4330 and 4350 | |
| Cisco 4320 Series Routers (4321) | MEM-4320-4G | 4G DRAM for Cisco ISR 4320 (Soldered on motherboard) |
| MEM-4320-4GU8G | 4G to 8G DRAM Upgrade (Fixed 4G + additional 4G) for ISR 4320 |
Cisco 4000 Series ISR DRAM (Spares)
| Platform | Part Number | Description |
| Cisco 4400 Series Routers (4451 and 4431) | MEM-4400-2G= | 2G DRAM (1 DIMM) for Cisco ISR 4400, Control Plane or Data Plane, Spare |
| MEM-4400-4G= | 4G DRAM (1 DIMM) for Cisco ISR 4400, Spare | |
| MEM-4400-8G= | 8G DRAM (1 DIMM) for Cisco ISR 4400, Spare | |
| Cisco 4300 Series Routers (4351, 4331 and 4321) | MEM-4300-2G= | 2G DRAM (1 DIMM) for Cisco ISR 4330 and 4350, Spare |
| MEM-4300-4G= | 4G DRAM (1 DIMM) for Cisco ISR 4300, Spare | |
| MEM-4300-8G= | 8G DRAM (1 DIMM) for Cisco ISR 4330 and 4350, Spare |
Cisco 4400 ISRs ship with 8 GB of flash memory by default. Cisco 4300 Series ISRs ship with a default 4 GB of flash memory, which is soldered on the motherboard and is not serviceable. On Cisco 4300 Series ISRs, installing an additional flash memory module will disable the onboard flash memory.
Cisco 4000 Series ISR Flash Memory (Factory Upgrades)
| Product Series | Part Number | Description |
| Cisco 4450 Series Routers (4451) | MEM-FLASH-8G | 8G Compact Flash Memory for Cisco ISR 4450 (default) |
| MEM-FLASH-8U16G | 8G to 16G Compact Flash Memory Upgrade for Cisco ISR 4450 | |
| MEM-FLASH-8U32G | 8G to 32G Compact Flash Memory Upgrade for Cisco ISR 4450 | |
| Cisco 4430 Series Routers (4431) | MEM-FLSH-8G | 8G eUSB Flash Memory for Cisco ISR 4430 (default) |
| MEM-FLSH-8U16G | 8G to 16G eUSB Flash Memory for Cisco ISR 4430 | |
| MEM-FLSH-8U32G | 8G to 32G eUSB Flash Memory for Cisco ISR 4430 | |
| Cisco 4300 Series Routers (4351, 4331, and 4321) | MEM-FLSH-4G | 4G eUSB Flash Memory for Cisco ISR 4300 (Soldered on motherboard) |
| MEM-FLSH-4U8G | 4G to 8G eUSB Flash Memory Upgrade for Cisco ISR 4300 | |
| MEM-FLSH-4U16G | 4G to 16G eUSB Flash Memory Upgrade for Cisco ISR 4350 and 4330 |
Cisco 4000 Series ISR Flash Memory (Spares)
The Cisco 4000 Series ISRs ship with a default fan assembly that drives “business-to-bezel” airflow in the router chassis. The cover for the redundant power supply (RPS) on the Cisco 4400 ISR can be ordered as a spare.
The Part Numbers for Cisco 4000 Series ISR Fan-related Products
More about Cisco ISR 4000 Bundles
Generally speaking, Cisco ISR 4000 is available is several attractive bundles. The AX bundles integrate Cisco Wide Area Application Services (WAAS), Security (SEC), and Data (DATA) licenses into a single bundle that is simple to order, configure, and deploy. For customers who are also interested in voice along with all of these features, AXV presents an attractive option.
Cisco ISR 4000 Feature Bundles
| Bundles | Features |
| Application Experience with Voice (AXV) | AX + Voice |
| Voice with Security (VSEC) | Voice + Security |
| Application Experience (AX) | IP Base + Security + advanced networking protocols: L2TPv3, BFD, MPLS, VRF, VXLANApplication Experience: PfRv3, WAAS with AppNav, NBAR2, AVC, IP SLAHybrid Cloud Connectivity: LISP, OTV, VPLS, EoMPLS
Intelligent Web Caching: Akamai Connect |
| Voice (V) | IP Base + Unified Communications: CME, SRST, CUBE |
| Security (SEC) | IP Base + Advanced Security: Zone Based Firewall, IPSec VPN, EZVPN, DMVPN, FlexVPN |
More information on ISR AX bundles is available at https://www.cisco.com/go/ax.
A pay-as-you-grow licensing model lets you increase the performance level for the platforms from the base level to a higher level. So you can purchase at an attractive entry-level price point and increase the performance level as your business demand grows. Table 6 describes the performance licenses.
Cisco ISR 4000 Performance Licenses
| Platform | Performance-on-Demand License | Features |
| ISR4451 | FL-44-PERF-K9 | Increases the performance from base performance 1 Gbps to 2 Gbps |
| ISR4431 | FL-44-PERF-K9 | Increases the performance from base performance 500 Mbps to 1 Gbps |
| ISR4351 | FL-4350-PERF-K9 | Increases the performance from base performance 200 Mbps to 400 Mbps |
| ISR4331 | FL-4330-PERF-K9 | Increases the performance from base performance 100 Mbps to 300 Mbps |
| ISR4321 | FL-4320-PERF-K9 | Increases the performance from base performance 50 Mbps to 100 Mbps |
More Related about Cisco 4000 Series Integrated Services Router Family Ordering Guide https://www.cisco.com/c/en/us/products/collateral/routers/4000-series-integrated-services-routers-isr/guide-c07-732797.html
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