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- Cisco
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- 1800s
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- Last added
- 2026-10-20
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Cisco 1800 Series Integrated Services Router Quick Start Guide
This Quick Start Guide covers the essential steps to install, start, and configure a Cisco 1800 Series Integrated Services Router (Modular). It includes information on connecting cables, powering on the device, and performing initial configuration tasks. The guide also details the interface numbering for the Cisco 1841 model, which differs from the Cisco 1700 series. This manual is written in Chinese.
Read onlineCisco 1800s specifications
| Form Factor | Desktop, 1‑rack‑unit (1‑RU) high (4.75 cm high with rubber feet) |
|---|---|
| Dimensions (W × D) | 12.74 × 9.7 in. (32.36 × 24.64 cm) |
| Weight | Maximum 6.1 lb (2.8 kg) |
| Flash Memory Capacity (default) | 64 MB |
| Flash Memory Capacity (maximum) | 128 MB |
| DRAM Capacity (default) | 256 MB |
| DRAM Capacity (maximum) | 384 MB |
| Managed Switch Ports | 8 (4 on 1805) |
| USB 2.0 Ports | 0 on 1801‑1803, 2 on 1805, 1811, 1812 |
| Power over Ethernet (PoE) | 802.3af support |
| Rack‑Mountable | Yes (optional 19‑in. rack‑mount kit required) |
Source: Cisco 1800 Series Integrated Services Routers Fixed‑Configuration Data Sheet
All Cisco 1800s documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
The shortest path to a working setup, usually only a few pages.
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What are the peak antenna gains for the 2.4 GHz and 5 GHz bands?
The peak antenna gain is approximately 3 dBi for the 2.4 GHz band and 5 dBi for the 5 GHz band.
What is the maximum current rating for the building's short-circuit protection?
The protection device rating must not exceed 20A.
How many managed switch ports are provided on the fixed‑configuration models?
Models 1801, 1802, 1803, 1811, and 1812 have eight 10/100‑BASE‑T managed switch ports; the 1805 model has four.
From: Cisco 1800 Series Integrated Services Routers Fixed‑Configuration Data Sheet
What wireless standards are supported?
The integrated wireless LAN supports IEEE 802.11a, b and g.
From: Cisco 1800 Series Fixed Configuration Router Product Leaflet