Specifications
Table Of Contents
- Contents
- Preface
- Getting Started
- Basic Router Configuration
- Interface Port Labels
- Viewing the Default Configuration
- Information Needed for Configuration
- Configuring Basic Parameters
- Configuring Static Routes
- Configuring Dynamic Routes
- Configuring Enhanced IGRP
- Basic Router Configuration
- Configuring Your Router for Ethernet and DSL Access
- Sample Network Deployments
- Configuring PPP over Ethernet with NAT
- Configuring PPP over ATM with NAT
- Configuring a LAN with DHCP and VLANs
- Configuring a VPN Using Easy VPN and an IPSec Tunnel
- Configure the IKE Policy
- Configure Group Policy Information
- Apply Mode Configuration to the Crypto Map
- Enable Policy Lookup
- Configure IPSec Transforms and Protocols
- Configure the IPSec Crypto Method and Parameters
- Apply the Crypto Map to the Physical Interface
- Create an Easy VPN Remote Configuration
- Verifying Your Easy VPN Configuration
- Configuration Example
- Configuring VPNs Using an IPSec Tunnel and Generic Routing Encapsulation
- Configuring a Simple Firewall
- Configuring a Wireless LAN Connection
- Sample Configuration
- Configuring Additional Features and Troubleshooting
- Additional Configuration Options
- Configuring Security Features
- Configuring Dial Backup and Remote Management
- Troubleshooting
- Reference Information
- Cisco IOS Software Basic Skills
- Concepts
- ROM Monitor
- Common Port Assignments
5-5
Cisco 1800 Series Integrated Services Routers (Fixed) Software Configuration Guide
OL-6426-03
Chapter 5 Configuring a LAN with DHCP and VLANs
Configure VLANs
Configure VLANs
Perform these steps to configure VLANs on your router, beginning in global configuration mode:
Verify Your VLAN Configuration
Use the following commands to view your VLAN configuration.
• show—Entered from VLAN database mode. Displays summary configuration information for all
configured VLANs.
• show vlan-switch—Entered from privileged EXEC mode. Displays detailed configuration
information for all configured VLANs.
Router# vlan database
Router(vlan)# show
VLAN ISL Id: 1
Name: default
Media Type: Ethernet
VLAN 802.10 Id: 100001
State: Operational
MTU: 1500
Translational Bridged VLAN: 1002
Translational Bridged VLAN: 1003
VLAN ISL Id: 1002
Name: fddi-default
Media Type: FDDI
VLAN 802.10 Id: 101002
State: Operational
MTU: 1500
Bridge Type: SRB
Command Purpose
Step 1
vlan ?
Example:
Router# config t
Router(config)#vlan ?
WORD ISL VLAN IDs 1-4094
accounting VLAN accounting configuration
ifdescr VLAN subinterface ifDescr
Router(config)#vlan
Enters VLAN configuration mode.
Step 2
ISL VLAN ID
Example:
Router(config)#vlan 2
Router(config-vlan)#
Adds VLANs, with identifiers ranging from
1- 4094.
For details about this command and additional
parameters that can be set, see the
Cisco IOS
Switching Services Command Reference.
Step 3
exit
Example:
Router(config-vlan)#exit
Router(config)#
Updates the VLAN database, propagates it throughout
the administrative domain, and returns to global
configuration mode.