cloudstack-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From radh...@apache.org
Subject git commit: updated refs/heads/master to 840e14d
Date Mon, 10 Jun 2013 12:26:57 GMT
Updated Branches:
  refs/heads/master 78811c500 -> 840e14de0


pvlan


Project: http://git-wip-us.apache.org/repos/asf/cloudstack/repo
Commit: http://git-wip-us.apache.org/repos/asf/cloudstack/commit/840e14de
Tree: http://git-wip-us.apache.org/repos/asf/cloudstack/tree/840e14de
Diff: http://git-wip-us.apache.org/repos/asf/cloudstack/diff/840e14de

Branch: refs/heads/master
Commit: 840e14de0b322013a496f62958889383f9ccc1e3
Parents: 78811c5
Author: radhikap <radhika.puthiyetath@citrix.com>
Authored: Mon Jun 10 17:56:27 2013 +0530
Committer: radhikap <radhika.puthiyetath@citrix.com>
Committed: Mon Jun 10 17:56:27 2013 +0530

----------------------------------------------------------------------
 docs/en-US/pvlan.xml | 117 +++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 99 insertions(+), 18 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/cloudstack/blob/840e14de/docs/en-US/pvlan.xml
----------------------------------------------------------------------
diff --git a/docs/en-US/pvlan.xml b/docs/en-US/pvlan.xml
index 5084ec4..e3f2ea3 100644
--- a/docs/en-US/pvlan.xml
+++ b/docs/en-US/pvlan.xml
@@ -21,27 +21,25 @@
 -->
 <section id="pvlan">
   <title>Isolation in Advanced Zone Using Private VLAN</title>
-  <para/>
+  <para>Isolation of guest traffic in shared networks can be achieved by using Private
VLANs
+    (PVLAN). PVLANs provide Layer 2 isolation between ports within the same VLAN. In a PVLAN-enabled
+    shared network, a user VM cannot reach other user VM though they can reach the DHCP server
and
+    gateway, this would in turn allow users to control traffic within a network and help
them deploy
+    multiple applications without communication between application as well as prevent communication
+    with other users’ VMs.</para>
   <itemizedlist>
     <listitem>
-      <para>isolate VMs from other VMs on the same network (Shared Networks are the
most common use
-        case) using PVLANs</para>
+      <para>Isolate VMs in a shared networks by using Private VLANs.</para>
     </listitem>
     <listitem>
-      <para>create a Network Offering enabling PVLAN support</para>
+      <para>Supported in both VPC and non-VPC deployments.</para>
     </listitem>
     <listitem>
-      <para>create shared networks based on a network offering which has PVLANs enabled</para>
+      <para>Supported on all hypervisors.</para>
     </listitem>
     <listitem>
-      <para>supported in VPC as well as non-VPC deployments</para>
-    </listitem>
-    <listitem>
-      <para>supported on all Hypervisors</para>
-    </listitem>
-    <listitem>
-      <para>Allow end users to deploy VMs on Isolated Networks or VPC along with the
Shared Networks
-        that have PVLAN support</para>
+      <para>Allow end users to deploy VMs in an isolated networks, or a VPC, or a Private
+        VLAN-enabled shared network.</para>
     </listitem>
   </itemizedlist>
   <section id="about-pvlan">
@@ -54,7 +52,38 @@
       Secondary VLAN. The original VLAN that is being divided into smaller groups is called
Primary,
       which implies that all VLAN pairs in a private VLAN share the same Primary VLAN. All
the
       secondary VLANs exist only inside the Primary. Each Secondary VLAN has a specific VLAN
ID
-      associated to it, which differentiates one sub-domain from another.</para>
+      associated to it, which differentiates one sub-domain from another. </para>
+    <para>Three types of ports exist in a private VLAN domain, which essentially determine
the
+      behaviour of the participating hosts. Each ports will have its own unique set of rules,
which
+      regulate a connected host's ability to communicate with other connected host within
the same
+      private VLAN domain. Configure each host that is part of a PVLAN pair can be by using
one of
+      these three port designation:</para>
+    <itemizedlist>
+      <listitem>
+        <para><emphasis role="bold">Promiscuous</emphasis>: A promiscuous
port can communicate with
+          all the interfaces, including the community and isolated host ports that belong
to the
+          secondary VLANs. In Promiscuous mode, hosts are connected to promiscuous ports
and are
+          able to communicate directly with resources on both primary and secondary VLAN.
Routers,
+          DHCP servers, and other trusted devices are typically attached to promiscuous
+          ports.</para>
+      </listitem>
+      <listitem>
+        <para><emphasis role="bold">Isolated VLANs</emphasis>: The ports
within an isolated VLAN
+          cannot communicate with each other at the layer-2 level. The hosts that are connected
to
+          Isolated ports can directly communicate only with the Promiscuous resources. If
your
+          customer device needs to have access only to a gateway router, attach it to an
isolated
+          port.</para>
+      </listitem>
+      <listitem>
+        <para><emphasis role="bold">Community VLANs</emphasis>: The ports
within a community VLAN
+          can communicate with each other and with the promiscuous ports, but they cannot
+          communicate with the ports in other communities at the layer-2 level. In a Community
mode,
+          direct communication is permitted only with the hosts in the same community and
those that
+          are connected to the Primary PVLAN in promiscuous mode. If your customer has two
devices
+          that need to be isolated from other customers' devices, but to be able to communicate
+          among themselves, deploy them in community ports.</para>
+      </listitem>
+    </itemizedlist>
     <para>For further reading:</para>
     <itemizedlist>
       <listitem>
@@ -72,11 +101,63 @@
       </listitem>
     </itemizedlist>
   </section>
-  <section id="ability-pvlan">
-    <title>Prerequisites</title>
-  </section>
   <section id="prereq-pvlan">
     <title>Prerequisites</title>
-    <para>Ensure that you configure private VLAN on your physical switches out-of-band.</para>
+    <itemizedlist>
+      <listitem>
+        <para>Use a PVLAN supported switch.</para>
+        <para>See <ulink
+            url="http://www.cisco.com/en/US/products/hw/switches/ps708/products_tech_note09186a0080094830.shtml"
+            >Private VLAN Catalyst Switch Support Matrix</ulink>for more information.</para>
+      </listitem>
+      <listitem>
+        <para>Connect a switch to the gateway; connect additional switches to the gateway
via a
+          trunk port: Only Cisco Catalyst 4500 has the PVLAN promiscuous trunk mode to connect
both
+          normal VLAN and PVLAN to a PVLAN-unaware switch. For other Catalyst PVLAN support
switch,
+          connect the switch to upper switch by using cables. The number of cables should
be greater
+          than the number of PVLANs used.</para>
+      </listitem>
+      <listitem>
+        <para>All the layer 2 switches, which are PVLAN-aware, are connected to each
other, and one
+          of them is connected to a router. All the ports connected to the host would be
configured
+          in trunk mode. Allow Management VLAN, Primary VLAN (public) and secondary Isolated
VLAN
+          ports. Configure the switch port connected to the router in PVLAN promiscuous trunk
mode,
+          which would translate an isolated VLAN to primary VLAN for router, which is PVLAN-unaware.
+        </para>
+      </listitem>
+      <listitem>
+        <para>If your Catalyst switch supports PVLAN, but not PVLAN promiscuous trunk
mode, perform
+          the following: </para>
+        <orderedlist numeration="loweralpha">
+          <listitem>
+            <para>Configure one of the switch port as trunk for management network
(management
+              VLAN).</para>
+          </listitem>
+          <listitem>
+            <para>For each PVLAN, perform the following:</para>
+            <orderedlist numeration="lowerroman">
+              <listitem>
+                <para>Connect one port of the Catalyst switch to the upper switch.</para>
+              </listitem>
+              <listitem>
+                <para>Set the port in the Catalyst Switch in promiscuous mode for one
pair of
+                  PVLAN</para>
+              </listitem>
+              <listitem>
+                <para>Set the port in upper switch to access mode, and allow only the
traffic of
+                  primary VLAN of the PVLAN pair.</para>
+              </listitem>
+            </orderedlist>
+          </listitem>
+        </orderedlist>
+      </listitem>
+      <listitem>
+        <para>Configure private VLAN on your physical switches out-of-band.</para>
+      </listitem>
+    </itemizedlist>
+  </section>
+  <section id="ability-pvlan">
+    <title/>
+    <para/>
   </section>
 </section>


Mime
View raw message