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How to Configure Microsoft Windows DHCP for Inter-VLAN Network Segments?

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Figure 1: Network Diagram for Project In this article we have been configuring Microsoft Windows DHCP for inter-VLAN network segments involves setting up separate DHCP scopes for each VLAN and enabling IP helpers on the Layer-3 Switch to relay DHCP requests from clients on different VLANs to the DHCP server.   What is DHCP? DHCP (Dynamic Host Configuration Protocol) is a protocol that provides quick, automatic, and central management for the distribution of IP addresses within a network. It’s also used to configure the subnet mask, default gateway, and DNS server information on the device.     As shown in figure we will first of all make three VLAN’s 10,20 and 30 having name VLAN10, VLAN20 and VLAN30 respectively.                            Figure 2: VLAN Creation in Layer-3 Switch   Now we will give IP address to VLANS interfaces we have created in Layer-3 switch as shown in figure 2 to act as default gateway for inter-VLAN communication or routing, as shown in figure below. Figure 3
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Basic Router Configuration.

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  In this configuration article we will see how different networks can communicate using router, Router definition is given below. A router is a device that connects two or more packet-switched networks or subnetworks. It serves two primary functions: managing traffic between these networks by forwarding data packets to their intended IP addresses and allowing multiple devices to use the same Internet connection. Router which we are using in packet tracer file is 2911 which has two interfaces which mean we can two different networks, so we will configure interfaces for each network and also to get the functionality of routing (communication between networks) from router. After entering in global configuration, we will select the interface GigabitEthernet 0/0, which we want to configure for left network, Up the interface as in router by default interfaces are down as given below: Figure 1: Router Interface getting up. After this we will assign the probably first IP of that network
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Layer-3 Switch as DHCP Server for LAN!

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                                                          Figure 1:  L3-Switch as DHCP for LAN In this article we will configure  layer-3 switch for LAN  and then after we will proceed to configure  Layer-3 as a DHCP server for different VLANS  with different network range.                                                           Figure 2: Commands for Configuring L3-Switch as DHCP                                                           Figure 3: IP Address after DHCP DORA Process for PC1                                                          Figure 4: IP Address after DHCP DORA Process for PC3 As output show that our DHCP is working for PC’s, and they have been getting there IP Addresses after DORA Process. DORA Process is, D(Discover), O(Offer), R(Request), A(Acknowledge) which is conversation model between DHCP client and server for IP assignment.
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Layer 3 Switch Configuration for Inter-Vlan Communication for different networks?

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                                                                Network Design for Layer 3 inter-VLAN communication. what is gateway? A gateway is a device or a software that connects two or more networks and allows data to flow between them. It can also perform functions such as protocol translation, data conversion, security filtering, or routing.   I have  three  layer 2 switches where different networks are installed. I have to configure a  layer 3 switch  for inter-VLAN communication. First thing first, I will create three VLANs which I will assign IP Addresses to them which will act as default gateway for hosts connected to layer 2 switch. To create VLANs we will use the command VLAN which is built in command for VLAN creation in switch. There is one VLAN already exist in switch is default VLAN for switch that can be used as a management VLAN. Following commands are used to create three VLANs(10,20,30). Switch>enable Switch#config terminal After running above commands, we are
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DHCP, DNS and Web Server Configurations Using Packet Tracer.

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In this Artice we will write about how to configure a DHCP, DNS and Web Server and for this configuration we will use Layer-3 and Layer-2 switches.           DHCP Server Configuration in Layer-3 Switch!   A  DHCP Server  is a network server that automatically provides and assigns IP addresses, default gateways and other network parameters to client devices. It relies on the standard protocol known as Dynamic Host Configuration Protocol or DHCP to respond to broadcast queries by clients. As network design above show that we have connected hosts ( PC's) to Layer-2 switches and so we are not going to assign manual IPs  to these hosts,  but we will configure DHCP Server for these hosts to get there IP's. In  this article  we will create VLANS and made there IP pools for DHCP configuration and these VLANS are 10,20 and 30. As commands below show that how we three VLANS 10,20 and 30 are created,  and their  name are vlan 10, vlan 20 and vlan30 respectively.   Figure 2: VLANS in Layer
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