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IPv6 support doc

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radhikap 2013-03-19 19:48:07 +05:30
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130
docs/en-US/changed-apicommands-4.1.xml
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@ -34,13 +34,137 @@
<row>
<entry>
<para>createNetworkOffering</para>
</entry>
<entry>
<para>The following request parameters have been added:</para>
<itemizedlist>
<listitem>
<para>isPersistent</para>
</listitem>
<listitem>
<para>startipv6</para>
</listitem>
<listitem>
<para>endipv6</para>
</listitem>
<listitem>
<para>ip6gateway</para>
</listitem>
<listitem>
<para>ip6cidr</para>
</listitem>
</itemizedlist>
</entry>
</row>
<row>
<entry>
<para>listNetworkOfferings</para>
<para>listNetworks</para>
</entry>
<entry>
<para>The following request parameters is added: isPersistent.</para>
<para>This parameter determines if the network or network offering created or listed by
using this offering are persistent or not.</para>
<para>The following request parameters has been added: isPersistent</para>
<para>This parameter determines if the network or network offering listed by using this
offering are persistent or not.</para>
</entry>
</row>
<row>
<entry>
<para>createVlanIpRange</para>
</entry>
<entry>
<para>The following request parameters have been added:</para>
<itemizedlist>
<listitem>
<para>startipv6</para>
</listitem>
<listitem>
<para>endipv6</para>
</listitem>
<listitem>
<para>ip6gateway</para>
</listitem>
<listitem>
<para>ip6cidr</para>
</listitem>
</itemizedlist>
</entry>
</row>
<row>
<entry>
<para>deployVirtualMachine</para>
</entry>
<entry>
<para>The following parameter has been added: ip6Address.</para>
<para>The following parameter is updated to accept the IPv6 address:
iptonetworklist.</para>
</entry>
</row>
<row>
<entry>
<para>CreateZoneCmd</para>
</entry>
<entry>
<para>The following parameter are added: ip6dns1, ip6dns2.</para>
</entry>
</row>
<row>
<entry>
<para>listRouters</para>
<para>listVirtualMachines</para>
</entry>
<entry>
<para>For nic responses, the following fields has been added.</para>
<itemizedlist>
<listitem>
<para>ip6address</para>
</listitem>
<listitem>
<para>ip6gateway</para>
</listitem>
<listitem>
<para>ip6cidr</para>
</listitem>
</itemizedlist>
</entry>
</row>
<row>
<entry>
<para>listVlanIpRanges</para>
</entry>
<entry>
<para>For nic responses, the following fields has been added.</para>
<itemizedlist>
<listitem>
<para>startipv6</para>
</listitem>
<listitem>
<para>endipv6</para>
</listitem>
<listitem>
<para>ip6gateway</para>
</listitem>
<listitem>
<para>ip6cidr</para>
</listitem>
</itemizedlist>
</entry>
</row>
<row>
<entry>
<para>listRouters</para>
<para>listZones</para>
</entry>
<entry>
<para>For DomainRouter and DataCenter response, the following fields have been
added.</para>
<itemizedlist>
<listitem>
<para>ip6dns1</para>
</listitem>
<listitem>
<para>ip6dns2</para>
</listitem>
</itemizedlist>
</entry>
</row>
<row>

191
docs/en-US/ipv6-support.xml Normal file
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@ -0,0 +1,191 @@
<?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="ipv6-support">
<title>IPv6 Support in &PRODUCT;</title>
<para>&PRODUCT;supports Internet Protocol version 6 (IPv6), the recent version of the Internet
Protocol (IP) that defines routing the network traffic. IPv6 uses a 128-bit address that
exponentially expands the current address space that is available to the users. IPv6 addresses
consist of eight groups of four hexadecimal digits separated by colons, for example,
5001:0dt8:83a3:1012:1000:8s2e:0870:7454. &PRODUCT; supports IPv6 for public IPs in shared
networks. With IPv6 support, VMs in shared networks can obtain both IPv4 and IPv6 addresses from
the DHCP server. You can deploy VMs either in a IPv6 or IPv4 network, or in a dual network
environment. If IPv6 network is used, the VM generates a link-local IPv6 address by itself, and
receives a stateful IPv6 address from the DHCPv6 server.</para>
<para>IPv6 is supported only on KVM and XenServer hypervisors. The IPv6 support is only an
experimental feature.</para>
<para>Here's the sequence of events when IPv6 is used: </para>
<orderedlist>
<listitem>
<para>The administrator creates an IPv6 shared network in an advanced zone.</para>
</listitem>
<listitem>
<para>The user deploys a VM in an IPv6 shared network.</para>
</listitem>
<listitem>
<para>The user VM generates an IPv6 link local address by itself, and gets an IPv6 global or
site local address through DHCPv6.</para>
<para>For information on API changes, see <xref linkend="changed-apicommands-4.1"/>.</para>
</listitem>
</orderedlist>
<section id="guidelines-ipv6">
<title>Prerequisites and Guidelines</title>
<para>Consider the following:</para>
<itemizedlist>
<listitem>
<para>CIDR size must be 64 for IPv6 networks.</para>
</listitem>
<listitem>
<para>The DHCP client of the guest VMs should support generating DUID based on Link-layer
Address (DUID- LL). DUID-LL derives from the MAC address of guest VMs, and therefore the
user VM can be identified by using DUID. See <ulink
url="http://tools.ietf.org/html/rfc3315">Dynamic Host Configuration Protocol for IPv6
</ulink>for more information.</para>
</listitem>
<listitem>
<para>The gateway of the guest network generates Router Advisement and Response messages to
Router Solicitation. The M (Managed Address Configuration) flag of Router Advisement
should enable stateful IP address configuration. Set the M flag to where the end nodes
receive their IPv6 addresses from the DHCPv6 server as opposed to the router or
switch.</para>
<note>
<para>The M flag is the 1-bit Managed Address Configuration flag for Router Advisement.
When set, Dynamic Host Configuration Protocol (DHCPv6) is available for address
configuration in addition to any IPs set by using stateless address
auto-configuration.</para>
</note>
</listitem>
<listitem>
<para>Use the System VM template exclusively designed to support IPv6. Download the System
VM template from <ulink url="http://nfs1.lab.vmops.com/templates/routing/debian/ipv6/"
>http://nfs1.lab.vmops.com/templates/routing/debian/ipv6/</ulink>.</para>
</listitem>
<listitem>
<para>The concept of Default Network applies to IPv6 networks. However, unlike IPv4
&PRODUCT; does not control the routing information of IPv6 in shared network; the choice
of Default Network will not affect the routing in the user VM.</para>
</listitem>
<listitem>
<para>In a multiple shared network, the default route is set by the rack router, rather than
the DHCP server, which is out of &PRODUCT; control. Therefore, in order for the user VM to
get only the default route from the default NIC, modify the configuration of the user VM,
and set non-default NIC's <code>accept_ra</code> to 0 explicitly. The
<code>accept_ra</code> parameter accepts Router Advertisements and auto-configure
<code>/proc/sys/net/ipv6/conf/interface</code> with received data.</para>
</listitem>
</itemizedlist>
</section>
<section id="limitsipv6">
<title>Limitations of IPv6 in &PRODUCT; </title>
<para>The following are not yet supported:</para>
<orderedlist>
<listitem>
<para>Security groups</para>
</listitem>
<listitem>
<para>Userdata and metadata</para>
</listitem>
<listitem>
<para>Passwords</para>
</listitem>
<listitem>
<para>The administrator cannot specify the IPv6 address of a VM</para>
</listitem>
</orderedlist>
</section>
<section id="network-conf-dhcpv6">
<title>Network Configuration for DHCPv6</title>
<para>Use DUID-LL to get IPv6 address from DHCP server</para>
<orderedlist>
<listitem>
<para>Set up dhclient by using DUID-LL.</para>
<para>Perform the following for DHCP Client 4.2 and above:</para>
<orderedlist numeration="loweralpha">
<listitem>
<para>Run the following command on the selected VM to get the dhcpv6 offer from
VR:</para>
<programlisting>dhclient -6 -D LL &lt;dev&gt;</programlisting>
</listitem>
</orderedlist>
<para>Perform the following for DHCP Client 4.1:</para>
<orderedlist numeration="loweralpha">
<listitem>
<para>Open the following to the dhclient configuration file:</para>
<programlisting>vi /etc/dhcp/dhclient.conf</programlisting>
</listitem>
<listitem>
<para>Add the following to the dhclient configuration file:</para>
<programlisting>send dhcp6.client-id = concat(00:03:00, hardware);</programlisting>
</listitem>
</orderedlist>
</listitem>
<listitem>
<para>Get IPv6 address from DHCP server as part of the system or network restart.</para>
<para>Based on the operating systems, perform the following:</para>
<para>On CentOS 6.2:</para>
<orderedlist numeration="loweralpha">
<listitem>
<para>Open the Ethernet interface configuration file:</para>
<programlisting>vi /etc/sysconfig/network-scripts/ifcfg-eth0</programlisting>
<para>The <code>ifcfg-eth0</code> file controls the first NIC in a system.</para>
</listitem>
<listitem>
<para>Make the necessary configuration changes, as given below:</para>
<programlisting>DEVICE=eth0
HWADDR=06:A0:F0:00:00:38
NM_CONTROLLED=no
ONBOOT=yes
BOOTPROTO=dhcp6
TYPE=Ethernet
USERCTL=no
PEERDNS=yes
IPV6INIT=yes
DHCPV6C=yes</programlisting>
</listitem>
<listitem>
<para>Open the following:</para>
<programlisting>vi /etc/sysconfig/network</programlisting>
</listitem>
<listitem>
<para>Make the necessary configuration changes, as given below:</para>
<programlisting>NETWORKING=yes
HOSTNAME=centos62mgmt.lab.vmops.com
NETWORKING_IPV6=yes
IPV6_AUTOCONF=no</programlisting>
</listitem>
</orderedlist>
<para>On Ubuntu 12.10</para>
<orderedlist numeration="loweralpha">
<listitem>
<para>Open the following:</para>
<programlisting>etc/network/interfaces:</programlisting>
</listitem>
<listitem>
<para>Make the necessary configuration changes, as given below:</para>
<programlisting>iface eth0 inet6 dhcp
autoconf 0
accept_ra 1</programlisting>
</listitem>
</orderedlist>
</listitem>
</orderedlist>
</section>
</section>

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docs/en-US/whats-new.xml
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@ -1,5 +1,5 @@
<?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" [
<!DOCTYPE chapter 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;
]>
@ -25,6 +25,7 @@
<section id="whats-new-in-api-4.1">
<title>What's New in the API for 4.1</title>
<xi:include href="add-remove-nic.xml" xmlns:xi="http://www.w3.org/2001/XInclude"/>
<xi:include href="ipv6-support.xml" xmlns:xi="http://www.w3.org/2001/XInclude"/>
<xi:include href="vmx-settings-dev.xml" xmlns:xi="http://www.w3.org/2001/XInclude"/>
<xi:include href="reset-ssh-key-dev.xml" xmlns:xi="http://www.w3.org/2001/XInclude"/>
<xi:include href="changed-apicommands-4.1.xml" xmlns:xi="http://www.w3.org/2001/XInclude"/>