Cisco 2901 Router Condition: Refurbished / Used Type: Integrated Services Router (ISR G2) WAN Ports: 2 × 10/100/1000 Ethernet Expansion Slots: 4 × EHWIC, 2 × DSP (PVDM3), 1 × ISM Performance: Up to 50 Mbps throughput Voice Support: Yes (PVDM3 required)
The Cisco 2901/K9 is a high-performance, modular 1U rack-mount router in the Cisco 2900 Series, ideal for small to mid-sized enterprise branch offices. It integrates routing, security, voice, video, and WAN services within a versatile and future-proof platform. The router features hardware encryption, voice-capable DSP slots, and flexible module expansion to support a range of business needs Cisco+4Router-Switch.com+4Router-Switch.com+4Cisco+1Router-Switch.com+1.
Built-in hardware encryption acceleration for high-performance IPsec VPN and secure traffic handling
Voice and video support: onboard DSP slots for Cisco voice and UC applications
Modular expansion: Includes SM, EHWIC, and ISM slots for flexibility and future upgrades
Universal OS image: Cisco IOS Universal image allows activation of desired services without new firmware
Reliable branch connectivity with Gigabit Ethernet, firewall, QoS, and MPLS support Scribd+4Cisco+4Router-Switch.com+4switch-wifi.com
| Specification | Details |
|---|---|
| Model | Cisco 2901/K9 |
| Form Factor | 1U Rack-Mount |
| Gigabit Ports | 2 × Gigabit RJ‑45, plus 1 port configurable as SFP |
| Expansion Slots | 1 × Service Module (SM), 4 × EHWIC, 1 × ISM |
| DSP Slots (PVDM‑3) | 2 slots for voice processing |
| DRAM | 512 MB onboard, expandable to 2 GB DDR2 ECC |
| Flash Memory | 256 MB onboard, expandable to 8 GB CompactFlash |
| Default Throughput | Up to 75 Mbps concurrent services (routing + security) CiscoRouter-Switch.com+4Scribd+4Cisco+4Router-Switch.com+1Cisco+1 |
| Security / VPN | Firewall, IPsec SSL VPN, content filtering, ACL, NAT |
| Voice & UC Capabilities | Integrated support for Cisco voice modules and CME/SRST |
| Routing & QoS Support | OSPF, BGP, RIP, EIGRP, MPLS, NetFlow, QoS |
| Management Interfaces | Console (RJ‑45), USB, AUX, SNMPv3, SSH |
| Power Supply | Internal AC power; optional external RPS‑2300 for redundancy and PoE boost |
| Typical Power Draw | Approx. 50 W |
| Dimensions (W × D × H) | ~17.2″ × 18.5″ × 3.5″ (2U height equivalent) |
| Weight | Approx. 13.2 kg (29 lbs) |
| Environment | Operating Temp: 0–40 °C; Humidity: 10–85% non-condensing |