Cisco ISR 2900 CISCO2901/K9 Cisco Integrated Services Router (ISR)
Brand: Cisco | Category: Network Equipment
SKU: CSC-CISCO2901K9 | Part #: CISCO2901/K9 | MPN: CISCO2901/K9
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About the Cisco ISR 2900 CISCO2901/K9 Cisco Integrated Services Router (ISR)
The Cisco ISR 2900 CISCO2901/K9 delivers dense WAN/LAN connectivity with 2 x Gigabit Ethernet (10/100/1000BASE-T) ports built directly onto the chassis, supported by 2 EHWIC slots and 1 ISM slot for modular interface expansion. This 1U rack-mountable form factor integrates routing, security, and WAN optimization into a compact footprint ideal for branch offices and remote sites requiring flexible port density without external switch dependencies.
Network engineers and IT procurement teams standardize on the Cisco ISR 2900 series when consolidating multiple functions—routing, encryption, firewall, and VPN termination—into a single platform. The unit ships with 512 MB DRAM and 256 MB Flash storage, both upgradeable to 2 GB and 4 GB respectively, allowing capacity scaling as throughput demands grow. Onboard crypto acceleration via hardware encryption engine handles IPsec AES/3DES at line rate, while Cisco IOS and IOS-XE operating systems deliver support for OSPF, EIGRP, BGP, RIP, IS-IS, and static routing. Built-in Zone-Based Policy Firewall (ZBFW) and dual-stack IPv4/IPv6 support enable modern enterprise security postures, alongside IPsec, SSL VPN, DMVPN, and GET VPN protocols for secure site-to-site and remote access connectivity.
Organizations deploying Cisco routing infrastructure across distributed locations benefit from the CISCO2901/K9's balance of throughput, modularity, and management consistency. The platform's 2 x USB 2.0 Type-A ports, RJ-45 console, and auxiliary serial port simplify deployment and troubleshooting in data center and remote branch environments. Contact Omnixon Global to submit a request for quotation on Cisco ISR 2900 routers and explore volume discounts for enterprise network modernization projects.
Technical Specifications
| Brand | Cisco |
| Category | Network Equipment |
| SKU | CSC-CISCO2901K9 |
| Part Number | CISCO2901/K9 |
| Condition | New |
| Form Factor | 1U |
| Interface | Gigabit Ethernet |
| Manufacturer Part Number | CISCO2901/K9 |
| Product Series | Cisco ISR 2900 (Integrated Services Router Generation 2) |
| Form Factor | 1U rack-mountable |
| Built-in WAN/LAN Ports | 2 x Gigabit Ethernet (10/100/1000BASE-T) |
| EHWIC Slots | 2 |
| ISM Slot | 1 |
| Default DRAM | 512 MB |
| Maximum DRAM | 2 GB |
| Default Flash Storage | 256 MB |
| Maximum Flash Storage | 4 GB |
| USB Ports | 2 x USB 2.0 Type-A |
| Console Port | 1 x RJ-45 asynchronous serial |
| Auxiliary Port | 1 x RJ-45 asynchronous serial |
| Hardware Encryption Acceleration | Yes — onboard crypto engine for IPsec AES/3DES |
| Operating System | Cisco IOS / IOS-XE |
| Supported Routing Protocols | OSPF, EIGRP, BGP, RIP, IS-IS, static routing |
| VPN Support | IPsec, SSL VPN (with appropriate license), DMVPN, GET VPN |
| Firewall | Zone-Based Policy Firewall (ZBFW) via IOS feature set |
| IPv6 Support | Yes — dual-stack IPv4/IPv6 |
| Power Supply | Internal, single AC power supply |
| Input Voltage | 100–240 V AC, 50–60 Hz |
| Operating Temperature | 0°C to 40°C (32°F to 104°F) |
| Dimensions (H x W x D) | 1.73 in x 17.5 in x 18.0 in (44 mm x 445 mm x 457 mm) |
| Weight | Approximately 5.4 kg (11.9 lb) |
Frequently Asked Questions about Cisco ISR 2900 CISCO2901/K9 Cisco Integrated Services Router (ISR)
What does the Cisco ISR 2900 CISCO2901/K9 Cisco Integrated Services Router (ISR) do?
The Cisco ISR 2900 CISCO2901/K9 Cisco Integrated Services Router (ISR) is enterprise networking hardware for data-center, campus, and branch deployments. Common roles include core/distribution switching, server uplinks, top-of-rack fabric, and edge connectivity in mixed Cisco/Juniper/Arista environments.
Is the Cisco ISR 2900 CISCO2901/K9 Cisco Integrated Services Router (ISR) compatible with my infrastructure?
The Cisco ISR 2900 CISCO2901/K9 Cisco Integrated Services Router (ISR) interoperates with standard switching protocols (LACP, MLAG/VPC, 802.1Q, OSPF/BGP). For specific cross-vendor scenarios — Cisco-to-Arista MLAG peering, fabric integration with Cumulus/SONiC, or migration from legacy Catalyst — our network engineers map a compatibility plan as part of the RFQ.