Cisco 2921/K9 ISR 3x GbE 2GB Integrated Services Router Enterprise | Wty
Cisco 2921/K9 — ISR G2 Enterprise Router
The Cisco 2921/K9 is a second-generation Integrated Services Router with 3 built-in Gigabit Ethernet ports, 4 EHWIC expansion slots, 256 MB Flash, and 512 MB DRAM. Backed by a 12-month warranty from Reboot IT, it is well suited to medium branch offices and campus edge deployments running Cisco IOS.
Key Benefits
- 3x Gigabit Ethernet Ports: Multi-WAN capable GbE interfaces for redundant WAN links or load balancing configurations
- 4 EHWIC Expansion Slots: Modular expansion with voice, DSL, 4G, serial, and additional GbE interface cards
- Cisco IOS 15.x: Full enterprise routing — OSPF, EIGRP, BGP, QoS, IPSec VPN, DMVPN, and zone-based firewall
- 256 MB Flash / 512 MB DRAM: Sufficient headroom for IOS 15.x images, configuration, and routing tables
- 1 ISM Slot: Internal Service Module slot for Cisco UC applications and voice DSP cards
- 12-Month Warranty: Tested, verified, and reset to factory defaults by Reboot IT's Melbourne team
Performance in Use
The Cisco 2921/K9 sits at the mid-point of the ISR G2 family, offering more processing capacity and expansion slots than the 2911 while remaining deployable at branch level without specialised rack infrastructure. Its four EHWIC slots allow the platform to be customised for voice DSP, additional WAN links, or serial connectivity — making it a flexible foundation for branch requirements that evolve over time.
At the campus edge or medium branch level, the 2921 handles simultaneous routing, VPN termination, QoS enforcement, and basic firewall functions. With IOS 15.x, features such as DMVPN, zone-based firewall, and Cisco Application Visibility and Control (AVC) are available for networks that require more sophisticated policy enforcement.
Technical Specifications
| Specification | Detail |
|---|---|
| Model | Cisco 2921/K9 (ISR G2) |
| Built-in GbE Ports | 3x Gigabit Ethernet |
| EHWIC Slots | 4 |
| ISM Slots | 1 |
| Flash Memory | 256 MB |
| DRAM | 512 MB (upgradeable to 2 GB) |
| Operating System | Cisco IOS 15.x |
| Routing Protocols | OSPF, EIGRP, BGP, IS-IS, RIP |
| VPN Support | IPSec, SSL VPN, DMVPN, GET VPN |
| Form Factor | 2U rack-mount |
| Warranty | 12-month (Reboot IT) |
Is It Right for You?
| Best For ✓ | Not For ✗ |
|---|---|
| Medium branch and campus edge deployments | Home or SOHO use cases |
| Multi-WAN or redundant WAN configurations | High-throughput data centre core routing |
| EHWIC module expandability (voice, DSL, 4G, serial) | Environments needing more than 4 EHWIC slots |
| Cisco IOS managed enterprise networks | SD-WAN-only architectures not requiring IOS |
| VPN headend or spoke deployments | Buyers needing newer IOS XE platforms (ISR 4xxx) |
Condition Grades
| Grade | Description |
|---|---|
| A — Excellent | Minimal cosmetic marks. All ports functional. Tested and reset to factory defaults. All LEDs verified. |
| B — Good | Light wear or minor marks. All ports functional. Tested and reset to factory defaults. |
Frequently Asked Questions
What EHWIC modules are compatible with the 2921?
The 2921 accepts all standard Cisco EHWIC modules including cards for 4G LTE, ADSL/VDSL, additional GbE ports, serial T1/E1 interfaces, and voice DSPs. Check Cisco's compatibility matrix for your specific card.
What IOS version does it ship with?
Units ship with Cisco IOS 15.x installed and reset to factory defaults. The specific release varies by unit — contact us for details.
How much RAM does it have?
Standard configuration is 512 MB DRAM and 256 MB Flash. Some units may have been upgraded to 2 GB DRAM — contact us to confirm for your unit.
Does it support VPN?
Yes. The K9 designation means the security bundle is included, enabling hardware-accelerated IPSec, DMVPN, GET VPN, and SSL VPN without a performance penalty.
Does it need a rack?
The 2921 is a 2U rack-mount device. Rack rails may or may not be included — check the listing or contact us to confirm availability.
How is shipping handled?
Shipping costs apply based on size and destination — rates are calculated at checkout.
What does the 12-month warranty cover?
All hardware defects and functional failures. Units are tested and reset to factory defaults before dispatch.
12-Month Warranty — Reboot IT
Every Cisco 2921/K9 sold by Reboot IT is backed by a 12-month return-to-base warranty. Our team has been testing, grading, and reselling quality IT equipment since 2001 from our Melbourne base. Shipping costs apply based on size and destination — rates are calculated at checkout. Questions? Visit us at reboot-it.com.au.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Cisco 2921/K9 — ISR G2 Enterprise Router
The Cisco 2921/K9 is a second-generation Integrated Services Router with 3 built-in Gigabit Ethernet ports, 4 EHWIC expansion slots, 256 MB Flash, and 512 MB DRAM. Backed by a 12-month warranty from Reboot IT, it is well suited to medium branch offices and campus edge deployments running Cisco IOS.
Key Benefits
- 3x Gigabit Ethernet Ports: Multi-WAN capable GbE interfaces for redundant WAN links or load balancing configurations
- 4 EHWIC Expansion Slots: Modular expansion with voice, DSL, 4G, serial, and additional GbE interface cards
- Cisco IOS 15.x: Full enterprise routing — OSPF, EIGRP, BGP, QoS, IPSec VPN, DMVPN, and zone-based firewall
- 256 MB Flash / 512 MB DRAM: Sufficient headroom for IOS 15.x images, configuration, and routing tables
- 1 ISM Slot: Internal Service Module slot for Cisco UC applications and voice DSP cards
- 12-Month Warranty: Tested, verified, and reset to factory defaults by Reboot IT's Melbourne team
Performance in Use
The Cisco 2921/K9 sits at the mid-point of the ISR G2 family, offering more processing capacity and expansion slots than the 2911 while remaining deployable at branch level without specialised rack infrastructure. Its four EHWIC slots allow the platform to be customised for voice DSP, additional WAN links, or serial connectivity — making it a flexible foundation for branch requirements that evolve over time.
At the campus edge or medium branch level, the 2921 handles simultaneous routing, VPN termination, QoS enforcement, and basic firewall functions. With IOS 15.x, features such as DMVPN, zone-based firewall, and Cisco Application Visibility and Control (AVC) are available for networks that require more sophisticated policy enforcement.
Technical Specifications
| Specification | Detail |
|---|---|
| Model | Cisco 2921/K9 (ISR G2) |
| Built-in GbE Ports | 3x Gigabit Ethernet |
| EHWIC Slots | 4 |
| ISM Slots | 1 |
| Flash Memory | 256 MB |
| DRAM | 512 MB (upgradeable to 2 GB) |
| Operating System | Cisco IOS 15.x |
| Routing Protocols | OSPF, EIGRP, BGP, IS-IS, RIP |
| VPN Support | IPSec, SSL VPN, DMVPN, GET VPN |
| Form Factor | 2U rack-mount |
| Warranty | 12-month (Reboot IT) |
Is It Right for You?
| Best For ✓ | Not For ✗ |
|---|---|
| Medium branch and campus edge deployments | Home or SOHO use cases |
| Multi-WAN or redundant WAN configurations | High-throughput data centre core routing |
| EHWIC module expandability (voice, DSL, 4G, serial) | Environments needing more than 4 EHWIC slots |
| Cisco IOS managed enterprise networks | SD-WAN-only architectures not requiring IOS |
| VPN headend or spoke deployments | Buyers needing newer IOS XE platforms (ISR 4xxx) |
Condition Grades
| Grade | Description |
|---|---|
| A — Excellent | Minimal cosmetic marks. All ports functional. Tested and reset to factory defaults. All LEDs verified. |
| B — Good | Light wear or minor marks. All ports functional. Tested and reset to factory defaults. |
Frequently Asked Questions
What EHWIC modules are compatible with the 2921?
The 2921 accepts all standard Cisco EHWIC modules including cards for 4G LTE, ADSL/VDSL, additional GbE ports, serial T1/E1 interfaces, and voice DSPs. Check Cisco's compatibility matrix for your specific card.
What IOS version does it ship with?
Units ship with Cisco IOS 15.x installed and reset to factory defaults. The specific release varies by unit — contact us for details.
How much RAM does it have?
Standard configuration is 512 MB DRAM and 256 MB Flash. Some units may have been upgraded to 2 GB DRAM — contact us to confirm for your unit.
Does it support VPN?
Yes. The K9 designation means the security bundle is included, enabling hardware-accelerated IPSec, DMVPN, GET VPN, and SSL VPN without a performance penalty.
Does it need a rack?
The 2921 is a 2U rack-mount device. Rack rails may or may not be included — check the listing or contact us to confirm availability.
How is shipping handled?
Shipping costs apply based on size and destination — rates are calculated at checkout.
What does the 12-month warranty cover?
All hardware defects and functional failures. Units are tested and reset to factory defaults before dispatch.
12-Month Warranty — Reboot IT
Every Cisco 2921/K9 sold by Reboot IT is backed by a 12-month return-to-base warranty. Our team has been testing, grading, and reselling quality IT equipment since 2001 from our Melbourne base. Shipping costs apply based on size and destination — rates are calculated at checkout. Questions? Visit us at reboot-it.com.au.
