Cisco ISR 2800 CISCO2851 Cisco Integrated Services Router (ISR)
Brand: Cisco | Category: Network Equipment
SKU: CSC-CISCO2851 | Part #: CISCO2851 | MPN: CISCO2851
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About the Cisco ISR 2800 CISCO2851 Cisco Integrated Services Router (ISR)
The Cisco ISR 2800 (CISCO2851) is a 2U rack-mount integrated services router engineered to consolidate routing, switching, and security functions across enterprise branch and mid-market deployments. Built on the Cisco Integrated Services Router 2800 platform, this device delivers modular connectivity through four Network Module slots, three WAN Interface Card slots, and two Advanced Integration Module slots, enabling network engineers to tailor I/O capacity to evolving business requirements.
The CISCO2851 combines two built-in 10/100/1000 Mbps Gigabit Ethernet ports with flexible expansion capabilities and runs Cisco IOS with support for IP Base, Advanced IP Services, Advanced Enterprise Services, and SP Services feature sets. Memory and storage scale from 256 MB to 1 GB DRAM and 64 MB to 256 MB CompactFlash, respectively, accommodating growing traffic and application demands. Optional AIM-VPN/SSL modules provide hardware-accelerated VPN encryption. A single AC internal power supply (100–240 V AC, 50/60 Hz) supports global deployment. Dual USB 1.1 ports, one RJ-45 console port, and one RJ-45 auxiliary port ensure comprehensive management and troubleshooting access. IT procurement teams and network architects seeking a compact, modular routing platform will find the CISCO2851 ideal for branch consolidation and edge security integration.
Typical Deployment Scenarios
- Branch office gateway consolidating routing, switching, and firewall functions into a single 2U appliance
- WAN edge platform with optional hardware VPN acceleration via AIM-VPN/SSL modules for encrypted site-to-site connectivity
- Multi-service integration point supporting voice, video, and data over shared branch infrastructure
- Modular expansion environment where four NM slots, three HWIC slots, and two AIM slots adapt to emerging application workloads
- Managed service provider platform running Advanced Enterprise Services or SP Services feature sets across customer sites
Contact Omnixon Global to request a detailed RFQ for the Cisco ISR 2800 CISCO2851 and discuss configuration options tailored to your network architecture.
Technical Specifications
| Brand | Cisco |
| Category | Network Equipment |
| SKU | CSC-CISCO2851 |
| Part Number | CISCO2851 |
| Condition | New |
| Form Factor | 1U |
| Manufacturer Part Number | CISCO2851 |
| Product Series | Integrated Services Router 2800 |
| Form Factor | 2U Rack-Mount |
| Built-in LAN Ports | 2 x 10/100/1000 Mbps Gigabit Ethernet (RJ-45) |
| Network Module (NM) Slots | 4 |
| WAN Interface Card (WIC) / HWIC Slots | 3 |
| Advanced Integration Module (AIM) Slots | 2 |
| USB Slots | 2 x USB 1.1 |
| Console Port | 1 x RJ-45 async serial |
| Auxiliary Port | 1 x RJ-45 async serial |
| Default DRAM | 256 MB |
| Maximum DRAM | 1 GB |
| Default Flash Storage | 64 MB CompactFlash |
| Maximum Flash Storage | 256 MB CompactFlash |
| Operating System | Cisco IOS |
| Supported Feature Sets | IP Base, Advanced IP Services, Advanced Enterprise Services, SP Services |
| Hardware VPN Acceleration | Via AIM-VPN/SSL modules (optional) |
| Power Supply | Single AC internal 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) | 3.5 x 44.5 x 43.7 cm (2U) |
Frequently Asked Questions about Cisco ISR 2800 CISCO2851 Cisco Integrated Services Router (ISR)
What does the Cisco ISR 2800 CISCO2851 Cisco Integrated Services Router (ISR) do?
The Cisco ISR 2800 CISCO2851 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 2800 CISCO2851 Cisco Integrated Services Router (ISR) compatible with my infrastructure?
The Cisco ISR 2800 CISCO2851 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.