ISR4431-V/K9 - Cisco 4000 Family Integrated Services Router
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ISR4431-V/K9 Overview
ISR4431-V/K9 Exact Bundle Identity
ISR4431-V/K9 is the Cisco ISR 4431 Unified Communications bundle. The base hardware is the ISR 4431 branch router with four onboard Gigabit Ethernet interfaces, three NIM slots, one ISC slot, 8 GB flash, 2 GB data-plane DRAM and 4 GB control-plane DRAM.
Bundle and performance boundary
Licensed bundle: V bundle: PVDM4-64 and UC license; APP, SEC, voice interface modules and current support are separate unless documented. Platform performance: 500 Mbps base platform performance, upgradeable to 1 Gbps with the documented performance license. Performance-license values are platform limits, not a promise of application throughput in every configuration.
Higher-throughput UC branch validation
Match WAN demand to the base or upgraded performance level and inventory the PVDM4-64, memory, power supplies and installed NIMs. Confirm the required CUBE, SRST or CME entitlements independently. A V bundle identifies a UC configuration but does not include an access circuit, SIP service, handsets or an unrestricted endpoint count.
Lifecycle and migration
Cisco lists the ISR4431 product line as end of sale with support ending 30 November 2028. Cisco Catalyst C8300-1N1S-4T2X is the published migration product for ISR4431-V/K9. Treat the replacement as a migration starting point: interface modules, voice resources, software features, rack power and configuration must be mapped rather than assumed compatible.
Related ISR 4000 bundle records
- ISR4221-AX/K9 - compare chassis capacity, bundle entitlement and lifecycle migration.
- ISR4351-V/K9 - compare chassis capacity, bundle entitlement and lifecycle migration.
- ISR4451-X-AX/K9 - compare chassis capacity, bundle entitlement and lifecycle migration.
Official Cisco evidence: Cisco ISR 4000 End-of-Sale Notice and Cisco platform and licensing documentation.
ISR4431-V/K9 Specification
| Exact model / SKU | ISR4431-V/K9 |
| Exact orderable PID | ISR4431-V/K9 |
| Bundle identity | Cisco ISR 4431 Unified Communications bundle |
| Hardware platform | ISR 4431 branch router with four onboard Gigabit Ethernet interfaces, three NIM slots, one ISC slot, 8 GB flash, 2 GB data-plane DRAM and 4 GB control-plane DRAM |
| License boundary | V bundle: PVDM4-64 and UC license; APP, SEC, voice interface modules and current support are separate unless documented |
| Documented performance | 500 Mbps base platform performance, upgradeable to 1 Gbps with the documented performance license |
| Lifecycle status | Cisco lists the ISR4431 product line as end of sale with support ending 30 November 2028 |
| Procurement gate | Verify PID, serial, installed modules, entitlement state and support eligibility |
| Source match | ISR4431-V/K9: exact Cisco PID and bundle identity verified |
| Official manufacturer reference | Cisco ISR 4000 End-of-Sale Notice |
ISR4431-V/K9 Warranty
 | Product Quotation |  | Condition and Packaging |
 | Technical Support Enquiry |  | Returns and Replacement |
 | Shipping Arrangements |  | Warranty Terms |
ISR4431-V/K9 FAQ
What is ISR4431-V/K9?
ISR4431-V/K9 - Cisco 4000 Family Integrated Services Router is a CISCO Router ISR 4000 product supplied by YYST Global for enterprise IT procurement and infrastructure projects.
Is ISR4431-V/K9 available from YYST Global?
Contact YYST Global to confirm availability for ISR4431-V/K9, the required quantity, exact configuration, delivery destination and current lead time before ordering. A product listing does not confirm current inventory.
What is the price of ISR4431-V/K9?
The current reference price for ISR4431-V/K9 is US$ 12,412.00. Final pricing can change based on stock, quantity, configuration and delivery destination.
What should buyers verify before ordering ISR4431-V/K9?
Confirm the exact model suffix, interfaces, power option, software or licenses, included accessories, new factory sealed, warranty and destination requirements before ordering ISR4431-V/K9.
Related products
Related ISR4431-V/K9
ISR4431-VSEC/K9 Cisco ISR 4431 Voice and Security Bundle Router
ISR4431-VSEC/K9 is a Cisco ISR 4431 Voice and Security Bundle order on the ISR 4000 platform. Verify its exact license, module and lifecycle records before purchase.
ISR4431/K9 - Cisco 4000 Family Integrated Services Router
ISR4431/K9 is the Cisco ISR 4431 base router order with four onboard Gigabit Ethernet interfaces, three NIM slots and one ISC slot. Cisco ended sale on November 7, 2023; general software maintenance ended August 31, 2025. Support eligibility and installed performance licenses require verification before procurement. The manufacturer family image is representative, not a photograph of a supplied unit.
ISR4431-DNA - Cisco 4000 Family Integrated Services Router
ISR4431-DNA is the Cisco ISR 4431 router order with a DNA subscription, four Gigabit interfaces and three NIM slots. Verify the quoted software tier and term; hardware support ends November 30, 2028.
ISR4431-SEC/K9 Cisco ISR 4431 Security Bundle Router
ISR4431-SEC/K9 is a Cisco ISR 4431 Security Bundle order on the ISR 4000 platform. Verify its exact license, module and lifecycle records before purchase.
Cisco ISR4431-AX/K9 ISR 4431 Application Experience Bundle
ISR4431-AX/K9 is the Cisco ISR 4431 Application Experience bundle with APP and SEC licenses, four onboard Gigabit Ethernet ports and three NIM slots. Cisco ended sale in November 2023.
ISR4461/K9 - Cisco 4000 Family Integrated Services Router
ISR4461/K9 is Cisco's base ISR 4461 router with two 10-Gigabit and four Gigabit onboard interfaces, three NIM slots and three service-module slots. Its 1.5 Gbps default aggregate forwarding tier is distinct from the separately licensed 3 Gbps tier. Cisco ended sale January 20, 2025; final support is January 31, 2030 under applicable entitlement terms.
ISR4451-X-SEC/K9 Cisco ISR 4451-X Security Bundle Router
ISR4451-X-SEC/K9 is a Cisco security-bundle router with four Gigabit Ethernet interfaces and 1 Gbps default aggregate throughput. The 2 Gbps performance license is separate; review final IOS XE train and support limits before retaining this legacy platform.
ISR4461-SEC/K9 Cisco ISR 4461 Security Bundle Router
ISR4461-SEC/K9 is a Cisco ISR 4461 router bundle with the SEC license, two 10-Gigabit and four Gigabit Ethernet interfaces. Cisco lists January 31, 2030 as the last support date under applicable existing entitlement terms.