Cisco ISR Wireless Configuration Guide

About this manual

This document explains how to distinguish legacy Cisco ISR routers (851W, 857W, 871W, 877W) from next‑generation models (861W, 881W, 891W, 1941W, 819W) and provides the required prerequisites and components. It includes background information on ISR wireless integration and the commands needed to view interface status.

Configuration examples are provided for both legacy and next‑generation ISR routers, showing how to map VLANs to SSIDs, set up BVI interfaces, and upgrade the integrated AP from lightweight to autonomous mode. The guide also covers verification steps, a brief troubleshooting note, and references to related Cisco documentation. This manual is written in Chinese.

What's inside

• Introduction
• Prerequisites
• Required Components
• Identify Legacy vs Next‑Gen ISR
• Legacy ISR Configuration Example
• Next‑Gen ISR Configuration Example
• Upgrade ISR AP to Autonomous Mode
• Verification
• Troubleshooting
• Related Information

Specifications

Frequently asked questions

How can I tell if an ISR router is legacy or next‑generation?

Run the command show ip interface brief; if the output includes interfaces WLAN‑AP 0 and WLAN‑Gig 0, it is a next‑generation router with an integrated wireless AP.

What command upgrades an ISR AP from lightweight to autonomous mode?

Enter configuration mode and execute service-module wlan-ap0 bootimage autonomous to switch the AP to autonomous mode.

Which command maps a VLAN to a BVI interface for legacy ISR configuration?

Use the BVI interface commands, for example interface BVI1 and assign the IP address for the VLAN.