CLOUDSTACK-2301
Project: http://git-wip-us.apache.org/repos/asf/cloudstack/repo Commit: http://git-wip-us.apache.org/repos/asf/cloudstack/commit/101d89c3 Tree: http://git-wip-us.apache.org/repos/asf/cloudstack/tree/101d89c3 Diff: http://git-wip-us.apache.org/repos/asf/cloudstack/diff/101d89c3 Branch: refs/heads/vmware-datamodel Commit: 101d89c3a351c85c8f76bf7b1a723a1153a7be70 Parents: 1686501 Author: Radhika PC <[email protected]> Authored: Thu May 2 11:43:02 2013 +0530 Committer: Radhika PC <[email protected]> Committed: Thu May 2 11:43:35 2013 +0530 ---------------------------------------------------------------------- docs/en-US/elastic-ip.xml | 47 +++++++++++++++++---------- docs/en-US/images/eip-ns-basiczone.png | Bin 55568 -> 63227 bytes 2 files changed, 30 insertions(+), 17 deletions(-) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/cloudstack/blob/101d89c3/docs/en-US/elastic-ip.xml ---------------------------------------------------------------------- diff --git a/docs/en-US/elastic-ip.xml b/docs/en-US/elastic-ip.xml index b09d37d..8ecbd75 100644 --- a/docs/en-US/elastic-ip.xml +++ b/docs/en-US/elastic-ip.xml @@ -21,16 +21,31 @@ <section id="elastic-ip"> <title>About Elastic IP</title> <para>Elastic IP (EIP) addresses are the IP addresses that are associated with an account, and act - as static IP addresses. The account owner has complete control over the Elastic IP addresses - that belong to the account. You can allocate an Elastic IP to a VM of your choice from the EIP - pool of your account. Later if required you can reassign the IP address to a different VM. This - feature is extremely helpful during VM failure. Instead of replacing the VM which is down, the - IP address can be reassigned to a new VM in your account. Elastic IP service provides Static NAT - (1:1) service in an EIP-enabled basic zone. The default network offering, + as static IP addresses. The account owner has the complete control over the Elastic IP addresses + that belong to the account. As an account owner, you can allocate an Elastic IP to a VM of your + choice from the EIP pool of your account. Later if required you can reassign the IP address to a + different VM. This feature is extremely helpful during VM failure. Instead of replacing the VM + which is down, the IP address can be reassigned to a new VM in your account. </para> + <para>Similar to the public IP address, Elastic IP addresses are mapped to their associated + private IP addresses by using StaticNAT. The EIP service is equipped with StaticNAT (1:1) + service in an EIP-enabled basic zone. The default network offering, DefaultSharedNetscalerEIPandELBNetworkOffering, provides your network with EIP and ELB network - services if a NetScaler device is deployed in your zone. Similar to the public IP address, - Elastic IP addresses are also mapped to their associated private IP addresses by using Stactic - NAT.</para> + services if a NetScaler device is deployed in your zone. Consider the following illustration for + more details.</para> + <mediaobject> + <imageobject> + <imagedata fileref="./images/eip-ns-basiczone.png"/> + </imageobject> + <textobject> + <phrase>eip-ns-basiczone.png: Elastic IP in a NetScaler-enabled Basic Zone.</phrase> + </textobject> + </mediaobject> + <para>In the illustration, a NetScaler appliance is the default entry or exit point for the + &PRODUCT; instances, and firewall is the default entry or exit point for the rest of the data + center. Netscaler provides LB services and staticNAT service to the guest networks. The guest + traffic in the pods and the Management Server are on different subnets / VLANs. The policy-based + routing in the data center core switch sends the public traffic through the NetScaler, whereas + the rest of the data center goes through the firewall. </para> <para>The EIP work flow is as follows:</para> <itemizedlist> <listitem> @@ -48,7 +63,6 @@ supported by NetScaler, in which the source IP address is replaced in the packets generated by a VM in the private network with the public IP address.</para> </note> - <para/> </listitem> <listitem> <para>This default public IP will be released in two cases:</para> @@ -68,12 +82,12 @@ </itemizedlist> </listitem> </itemizedlist> - <para>However, for the deployments where public IPs are limited resources, you have the - flexibility to choose not to allocate a public IP by default. You can use the Associate Public - IP option to turn on or off the automatic public IP assignment in the EIP-enabled Basic zones. - If you turn off the automatic public IP assignment while creating a network offering, only a - private IP is assigned to a VM when the VM is deployed with that network offering. Later, the - user can acquire an IP for the VM and enable static NAT.</para> + <para>For the deployments where public IPs are limited resources, you have the flexibility to + choose not to allocate a public IP by default. You can use the Associate Public IP option to + turn on or off the automatic public IP assignment in the EIP-enabled Basic zones. If you turn + off the automatic public IP assignment while creating a network offering, only a private IP is + assigned to a VM when the VM is deployed with that network offering. Later, the user can acquire + an IP for the VM and enable static NAT.</para> <para condition="admin">For more information on the Associate Public IP option, see <xref linkend="creating-network-offerings"/>.</para> <para condition="install">For more information on the Associate Public IP option, see the @@ -83,7 +97,6 @@ continue to get both public IP and private by default, irrespective of the network offering configuration.</para> </note> - <para/> <para>New deployments which use the default shared network offering with EIP and ELB services to create a shared network in the Basic zone will continue allocating public IPs to each user VM.</para> http://git-wip-us.apache.org/repos/asf/cloudstack/blob/101d89c3/docs/en-US/images/eip-ns-basiczone.png ---------------------------------------------------------------------- diff --git a/docs/en-US/images/eip-ns-basiczone.png b/docs/en-US/images/eip-ns-basiczone.png index 315ff55..bc88570 100644 Binary files a/docs/en-US/images/eip-ns-basiczone.png and b/docs/en-US/images/eip-ns-basiczone.png differ
