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Cisco • SKU ISR4451-X-SEC/K9
Cisco ISR4451-X-SEC/K9 — ISR 4451-X Integrated Services Router
Cisco ISR 4451-X Integrated Services Router — Security Bundle (SEC/K9); enterprise branch router with Zone-Based Firewall, IPSec/DMVPN/FlexVPN, 4x GE + 4x SFP, 1 Gbps default throughput, 2U rack-mount
- End-of-sale — refurbished only
Download Cisco datasheet ↗ via Cisco.com ISR 4400 series datasheet (official vendor PDF)
What is the Cisco ISR4451-X-SEC/K9?
Cisco ISR 4451-X Integrated Services Router — Security Bundle (SEC/K9); enterprise branch router with Zone-Based Firewall, IPSec/DMVPN/FlexVPN, 4x GE + 4x SFP, 1 Gbps default throughput, 2U rack-mount
TFI supplies the ISR4451-X-SEC/K9 refurbished to South African businesses, each unit covered by warranty and optional SLA. As a B-BBEE Level 2 distributor we can quote stock, lead time and price — usually within the same business day.
Specifications
| ports | 4x 10/100/1000 GE RJ-45 onboard + 4x GE SFP uplink ports |
|---|---|
| expansion slots | 3x NIM slots, 1x ISC slot, 2x SM (Service Module) slots |
| throughput | 1 Gbps default aggregate; upgradeable to 2 Gbps via Performance-on-Demand license |
| memory | Control/Services plane DRAM: 4 GB default (max 16 GB); Data plane DRAM: 2 GB; Flash: 8 GB default (max 32 GB) |
| security bundle | SEC license included: Zone-Based Firewall, IPSec VPN, EZVPN, DMVPN, FlexVPN |
| power supply | Max 450W (AC, no PoE); PoE options up to 1000W (redundant) or 1450W (boost); 100-240 VAC autoranging |
| form factor | 2U, 19-inch rack-mount; 3.5" H x 17.25" D x 18.5" W |
| eol status | End-of-Sale; EOSL (last hardware support) November 30, 2028; replacement: Cisco Catalyst C8300-2N2S-6T |
End-of-life status
The ISR4451-X-SEC/K9 is end-of-sale
Cisco has declared the ISR4451-X-SEC/K9 end-of-sale, so it is no longer manufactured new. TFI supplies it professionally refurbished and tested.
Why refurbished still makes sense: a refurbished ISR4451-X-SEC/K9 delivers the same proven performance at a fraction of the new-equipment cost, backed by a TFI warranty and SLA. It is the practical choice for spares, expansion of an existing deployment, or extending the life of a network you are not ready to replace. Talk to us about a successor model if you are planning a refresh.
Frequently asked questions
- What is the Cisco ISR4451-X-SEC/K9?
- Cisco ISR 4451-X Integrated Services Router — Security Bundle (SEC/K9); enterprise branch router with Zone-Based Firewall, IPSec/DMVPN/FlexVPN, 4x GE + 4x SFP, 1 Gbps default throughput, 2U rack-mount
- Is the ISR4451-X-SEC/K9 still supported?
- The Cisco ISR4451-X-SEC/K9 has reached end-of-sale, so it is supplied refurbished. TFI back every refurbished unit with a warranty and SLA options, which makes it a cost-effective choice where the platform still fits your network.
- How many ports does the ISR4451-X-SEC/K9 have?
- Port configuration: 4x 10/100/1000 GE RJ-45 onboard + 4x GE SFP uplink ports.
- Can TFI deliver the ISR4451-X-SEC/K9 in South Africa?
- Yes. TFI is a South African distributor (B-BBEE Level 2) and ships the Cisco ISR4451-X-SEC/K9 nationwide. Send us the SKU and we come back with stock, lead time and price — usually the same business day.
Also in the Cisco ISR4400 Series Routers
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ACS-4350-BEZEL
Cisco ISR 4350 Series Front Bezel — cosmetic faceplate accessory/spare for Cisco ISR 4351, ISR 4351/K9 routers (1U rack-mount form factor)
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ACS-4430-BEZEL
Cisco ISR 4430 Series Front Bezel — decorative/protective front panel accessory for ISR 4430 routers, 1U rack-mount form factor
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ACS-4430-FanASSY
Cisco ACS-4430-FANASSY — field-replaceable, hot-swappable fan tray assembly (spare) for the Cisco ISR 4400-series 1RU chassis. Cisco product/manufacturing number 800-40759-01. Cools the router internals; a single-tray FRU containing all chassis fans.
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ACS-4430-RM-19
Cisco 19-inch Rackmount Kit for ISR 4430/4431 routers — 2-post, 2-bracket steel mounting kit for standard 19-inch equipment racks
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ACS-4430-RM-23
Cisco ISR 4430 23-Inch Rackmount Kit — physical rack-mount bracket accessory for installing the ISR 4430 router in a 23-inch wide telco-style rack
Verification sources (5)
- https://networkdevicesinc.com/products/isr4451-x-sec-k9
- https://serviceexpress.com/eol-eosl-database/products/cisco-isr4451-x-sec-k9-cisco-network-services/
- https://www.cisco.com/c/dam/global/en_vn/solutions/smb/velocity/Downloads/isr4400_datasheet.pdf
- https://www.router-switch.com/pdf2html/pdf/isr4451-x-sec-k9-datasheet.pdf
- https://www.layer23-switch.com/eol-eosl-tool/isr4451-x-sec-k9/
Need pricing on ISR4451-X-SEC/K9?
Send us the SKU. We come back with stock, lead time and price — typically within the same business day.