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+<?xml version='1.0' encoding='utf-8' ?>
+<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
+<!ENTITY % BOOK_ENTITIES SYSTEM "cloudstack.ent">
+%BOOK_ENTITIES;
+]>
+<!-- Licensed to the Apache Software Foundation (ASF) under one
+    or more contributor license agreements.  See the NOTICE file
+    distributed with this work for additional information
+    regarding copyright ownership.  The ASF licenses this file
+    to you under the Apache License, Version 2.0 (the
+    "License"); you may not use this file except in compliance
+    with the License.  You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+    Unless required by applicable law or agreed to in writing,
+    software distributed under the License is distributed on an
+    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+    KIND, either express or implied.  See the License for the
+    specific language governing permissions and limitations
+    under the License.
+-->
+<section id="add-ip-range">
+  <title>Adding Multiple IP Ranges</title>
+  <note>
+    <para>The feature can only be implemented on IPv4 addresses.</para>
+  </note>
+  <para>&PRODUCT; provides you with the flexibility to add guest IP ranges from different subnets in
+    Basic zones and security groups-enabled Advanced zones. For security groups-enabled Advanced
+    zones, it implies multiple subnets can be added to the same VLAN. With the addition of this
+    feature, you will be able to add IP address ranges from the same subnet or from a different one
+    when IP address are exhausted. This would in turn allows you to employ higher number of subnets
+    and thus reduce the address management overhead.</para>
+  <para>Ensure that you manually configure the gateway of the new subnet before adding the IP range.
+    Note that &PRODUCT; supports only one gateway for a subnet; overlapping subnets are not
+    currently supported.</para>
+  <para>You can also delete IP ranges. This operation fails if an IP from the remove range is in
+    use. If the remove range contains the IP address on which the DHCP server is running, &PRODUCT;
+    acquires a new IP from the same subnet. If no IP is available in the subnet, the remove
+    operation fails.</para>
+  <para>This feature is supported on KVM, xenServer, and VMware hypervisors.</para>
+  <orderedlist>
+    <listitem>
+      <para>Log in to the &PRODUCT; UI as an administrator or end user.</para>
+    </listitem>
+    <listitem>
+      <para>In the left navigation, choose Infrastructure. </para>
+    </listitem>
+    <listitem>
+      <para>On Zones, click View More, then click the zone to which you want to work with..</para>
+    </listitem>
+    <listitem>
+      <para>Click Physical Network.</para>
+    </listitem>
+    <listitem>
+      <para>In the Guest node of the diagram, click Configure.</para>
+    </listitem>
+    <listitem>
+      <para>Click Networks.</para>
+    </listitem>
+    <listitem>
+      <para>Select the networks you want to work with.</para>
+    </listitem>
+    <listitem>
+      <para>Click View IP Ranges.</para>
+    </listitem>
+    <listitem>
+      <para>Click Add IP Range.</para>
+      <para>The Add IP Range dialog is displayed, as follows:</para>
+      <mediaobject>
+        <imageobject>
+          <imagedata fileref="./images/add-ip-range.png"/>
+        </imageobject>
+        <textobject>
+          <phrase>add-ip-range.png: adding an IP range to a network.</phrase>
+        </textobject>
+      </mediaobject>
+    </listitem>
+    <listitem>
+      <para>Specify the following:</para>
+      <para>All the fields are mandatory.</para>
+      <itemizedlist>
+        <listitem>
+          <para><emphasis role="bold">Gateway</emphasis>: The gateway for the tier you create.
+            Ensure that the gateway is within the Super CIDR range that you specified while creating
+            the VPC, and is not overlapped with the CIDR of any existing tier within the VPC.</para>
+        </listitem>
+        <listitem>
+          <para><emphasis role="bold">Netmask</emphasis>: The netmask for the tier you create. </para>
+          <para>For example, if the VPC CIDR is 10.0.0.0/16 and the network tier CIDR is
+            10.0.1.0/24, the gateway of the tier is 10.0.1.1, and the netmask of the tier is
+            255.255.255.0.</para>
+        </listitem>
+        <listitem>
+          <para><emphasis role="bold">Start IP/ End IP</emphasis>: A range of IP addresses that are
+            accessible from the Internet and will be allocated to guest VMs. Enter the first and
+            last IP addresses that define a range that &PRODUCT; can assign to guest VMs .</para>
+        </listitem>
+      </itemizedlist>
+    </listitem>
+    <listitem>
+      <para>Click OK.</para>
+    </listitem>
+  </orderedlist>
+</section>
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