Inter VLAN Configuration plus IP

To add the IP address of a DHCP server for a specified VLAN on a routing switch, enter the ip helper-address command at the VLAN configuration level as in the following example:

IP Helper-addres for VLANs. This is simple solution to reduce a bottle neck of router which is issuing ip address to clients using IP DHCP pool "Vlanxx". IP Helper-Address command can point to enterprize DHCP Server instead to issues ip address

You need to configure the IP helper address at the default GW interface of the devices. So, if you need devices in VLAN V you need to configure a Default Gateway they can use and configure the helper address there.

Just tag the vlans to the Router and give the router an ip address in each VLAN so it can perform the routing. The router is the device that needs the ip-helper configuring on each vlan interface.

Sub-interface on the VLAN interface : Create a sub-interface on the VLAN 1116 interface and configure the IP helper address on that sub-interface. This way, the clients won't be able to use the main IP address of the VLAN interface for routing.

Configuring IP DHCP Helper Address Have you ever wondered how DHCP clients get IP addresses from servers not on their own subnet? This lab will discuss and demonstrate the configuration and verification of an IP DHCP helper addresses.

In the realm of TCP/IP networking, the IP Helper Address plays an important role in networks with many Layer 3 subnets. It is a feature implemented mainly on Layer 3 devices such as routers, Layer 3 switches, firewalls etc, to assist in the forwarding of