Introduction

This comes up often enough on core switches and routers. Below is how to configure four VLANs, VLAN interfaces, and DHCP scopes for each VLAN.

Configuration Steps

The management VLAN will not have a DHCP scope. Typically you assign static IP addresses on your management VLAN.

!
vlan 1010
name servers
!
vlan 1020
name users
!
vlan 1030
name lab
!
vlan 99
name management
!

interface vlan 1010
ip address 10.100.10.1 255.255.255.0
!
interface vlan 1020
ip address 10.100.20.1 255.255.255.0
!
interface vlan 1030
ip address 10.100.30.1 255.255.255.0
!
interface vlan 99
ip address 10.100.99.254 255.255.255.0
!

ip dhcp pool vlan1010
   network 10.100.10.0 255.255.255.0
   domain-name test.local
   dns-server 4.4.4.2 4.4.4.1
   default-router 10.100.10.1

   lease 3
!
   ip dhcp pool vlan1020
    network 10.100.20.0 255.255.255.0
    domain-name cisco.com
    dns-server 4.4.4.2 4.4.4.1
    default-router 10.100.20.1

   lease 3
!
 ip dhcp pool vlan1030
    network 10.100.30.0 255.255.255.0
    domain-name cisco.com
    dns-server 4.4.4.2 4.4.4.1
    default-router 10.100.30.1

   lease 3
   !