| <?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="multiple-ip-range"> |
| <title>About 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. To support this feature, the capability of |
| <code>createVlanIpRange</code> API is extended to add IP ranges also from a different |
| subnet.</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>Use the <code>deleteVlanRange</code> API to 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> |
| </section> |