diff --git a/config/sample.yml b/config/sample.yml
index bf3d680..16aafff 100644
--- a/config/sample.yml
+++ b/config/sample.yml
@@ -1,67 +1,117 @@
-# Deployment configuration for a phyical hardware POD
+# CORD POD - Sample configuration
 ---
 
+# Head node access information:
+#
+# ip                       - The IP address that the dev node uses to reach the head node
+#
+# ansible_user             - A valid sudoer user on the head node
+#
+# ansible_ssh_pass         - The password of the sudoer user on the head node
+#
+# ansible_ssh_port         - The SSH port that the dev node should use to reach the head node
+#
 headnode:
-  ip: '10.90.0.2'
-  ansible_user: 'ubuntu'
-  ansible_ssh_pass: 'ubuntu'
+  ip: '192.168.1.1'
+  ansible_user: 'cord'
+  ansible_ssh_pass: 'cord'
   ansible_ssh_port: 22
 
-common:
-  # set to the profile of cord you want to install
-  cord_profile: 'rcord'
+# Other passwords:
+#
+# Password are optional. If not set, random passwords will be generated.
+#
+passwords:
+#  compute_node: 'ubuntu'
+#  maas_admin: 'admin'
+#  maas_user: 'cord'
 
-  # directories on the head node that the cord dir is copied to, and profile is created in
+# Docker settings:
+#
+docker:
+  imageVersion: 'candidate'
+
+common:
+  # CORD profile
+  #
+  # cord_profile           - The profile of CORD you'd like to deploy.
+  #                          Options: rcord, ecord, ecord_global, mcord. For default, leave rcord
+  # cord_dir               - The directory on the head node where CORD is copied to
+  #
+  # cord_profile_dir       - The directory on the head node where the CORD profile is copied to
+  #
+  cord_profile: 'rcord'
   cord_dir: '/opt/cord'
   cord_profile_dir: '/opt/cord_profile'
-
-  # Network address information for the head node:
   #
-  # fabric_ip     - the IP address and mask bits to be used to configure the network
-  #                 interface connected to the leaf - spine fabric
+  # Head node: external network configuration:
   #
-  # management_ip - the IP address and mask bits to be used to configure the network
-  #                 interface connecting the head node to the POD internal
-  #                 management network. The head node will deliver DHCP addresses to
-  #                 the other compute nodes over this interface
+  # external_iface         - The name of the interface that connects the head node to the
+  #                          Internet (optional)
+  # external_ip            - The IP address and mask bits to be used to configure the network
+  #                          interface connecting the head node (and the POD) to the
+  #                          Internet. All traffic in the POD to external hosts will be
+  #                          NAT-ed through this interface
+  # external_gw            - The IP address of the external network gateway, used to reach
+  #                          the Internet
+  #external_iface: 'eth2'
+  external_ip: '192.168.1.1/24'
+  external_gw: '192.168.1.254'
   #
-  # external_ip   - the IP address and mask bits to be used to configure the network
-  #                 interface connecting the head node (and the POD) to the
-  #                 Internet. All traffic in the POD to external hosts will be
-  #                 NAT-ed through this interface
-  # external_iface   - the name of the interface that connects the head node to the
-  #                    Internet
-  # management_network - the network and mask bits to used for hosts on the management
-  #                      network
-  fabric_ip: '10.6.1.1/24'
-  #fabric_range_low: '10.6.1.2'
-  #fabric_range_high: '10.6.1.100'
+  # Head node: internal (management) network configuration:
+  #
+  # management_network     - The network and mask bits to used for hosts on the management
+  #                          network
+  # management_ip          - The IP address and mask bits to be used to configure the network
+  #                          interface connecting the head node to the POD internal
+  #                          management network. The head node will deliver DHCP addresses to
+  #                          the other compute nodes over this interface
+  # management_range_low   - The lowest IP to be assigned on the internal management network
+  #                          (optional)
+  # management_range_high  - The highest IP to be assigned on the internal management network
+  #          (optional)
+  management_network: '10.6.0.0/24'
   management_ip: '10.6.0.1/24'
   #management_range_low: '10.6.0.2'
   #management_range_high: '10.6.0.127'
-  external_ip: '47.135.132.21/24'
-  #external_iface: 'eth2'
-  management_network: 10.6.0.0/24
-
-  # the skipTags options allow various part of the deployment to be skipped
-  # switch_support - does not deploy switch boot images to the PXE server
   #
-  # reboot - will not reboot the head node after updating its network configuration
-  #          this may mean the network configuration will not take effect, but will
-  #          also prevent you from being locked out of the server if there is a
-  #          network configuration error.
+  # Head node: fabric network configuartion:
   #
-  # interface_config - will not modify the network configuration of the head node,
-  #                    including the consistent naming of the network interfaces
+  # fabric_ip              - The IP address and mask bits to be used to configure the network
+  #                          interface connected to the leaf - spine fabric
+  # fabric_range_low       - The lowest IP to be assigned to the fabric switches (optional)
+  #
+  # fabric_range_high      - The highest IP to be assigned to the fabric switches (optional)
+  #
+  fabric_ip: '10.6.1.1/24'
+  #fabric_range_low: '10.6.1.2'
+  #fabric_range_high: '10.6.1.100'
+  #
+  # SkipTags options
+  #
+  # Allow various part of the deployment to be skipped.
+  # All extra vars are optional.
+  #
+  # switch_support         - Does not deploy switch boot images to the PXE server
+  #
+  # reboot                 - Will not reboot the head node after updating its network configuration
+  #                          this may mean the network configuration will not take effect, but will
+  #                          also prevent you from being locked out of the server if there is a
+  #                          network configuration error
+  # interface_config       - Will not modify the network configuration of the head node,
+  #                          including the consistent naming of the network interfaces
   skipTags:
   #  - 'switch_support'
   #  - 'reboot'
   #  - 'interface_config'
-
+  #
+  # Extra vars:
+  #
   # The following variable settings can be used to customize how the network interfaces
   # are selected into the fabric and management bridge interface or ignored/excluded.
-  # See the documentation docs/quickstart_physical.md for more information about how
-  # to set these variables.
+  # See the documentation for more information about how to set these variables.
+  # All extra vars are optional.
+  #
   extraVars:
   #  - 'fabric_include_names=<name1>,<name2>,...'
   #  - 'fabric_include_module_types=<mtype1>,<mtype2>,...'
@@ -81,20 +131,11 @@
   #  - 'management_ignore_names=<name1>,<name2>,...'
   #  - 'management_ignore_module_types=<mtype1>,<mtype2>,...'
   #  - 'management_ignore_bus_types=<btype1>,<btype2>,...'
-  #  - ubuntu_apt_repo="deb [arch=amd64] http://10.1.0.1:8889/mirror/archive.ubuntu.com/ubuntu trusty main universe"
-  #  - ubuntu_updates_apt_repo="deb [arch=amd64] http://10.1.0.1:8889/mirror/archive.ubuntu.com/ubuntu trusty-updates main universe"
-  #  - docker_apt_repo="deb [arch=amd64] http://10.1.0.1:8889/mirror/apt.dockerproject.org/repo ubuntu-trusty main"
-  #  - java_apt_repo="deb [arch=amd64] http://10.1.0.1:8889/mirror/ppa.launchpad.net/webupd8team/java/ubuntu trusty main"
-  #  - ansible_apt_repo="deb [arch=amd64] http://10.1.0.1:8889/mirror/ppa.launchpad.net/ansible/ansible/ubuntu trusty main"
-  #  - maas_apt_repo="deb [arch=amd64] http://10.1.0.1:8889/mirror/ppa.launchpad.net/maas/stable/ubuntu trusty main"
-  #  - dell_apt_repo="deb [arch=amd64] http://10.1.0.1:8889/mirror/linux.dell.com/repo/community trusty openmanage"
-  #  - juju_apt_repo="deb [arch=amd64] http://10.1.0.1:8889/mirror/ppa.launchpad.net/juju/stable/ubuntu trusty main"
-
-# If passwords are not set, random passwords will be generated
-passwords:
-  #compute_node: ubuntu
-  #maas_admin: admin
-  #maas_user: cord
-
-docker:
-  imageVersion: candidate
+  #  - 'ubuntu_apt_repo="deb [arch=amd64] http://10.1.0.1:8889/mirror/archive.ubuntu.com/ubuntu trusty main universe"'
+  #  - 'ubuntu_updates_apt_repo="deb [arch=amd64] http://10.1.0.1:8889/mirror/archive.ubuntu.com/ubuntu trusty-updates main universe"'
+  #  - 'docker_apt_repo="deb [arch=amd64] http://10.1.0.1:8889/mirror/apt.dockerproject.org/repo ubuntu-trusty main"'
+  #  - 'java_apt_repo="deb [arch=amd64] http://10.1.0.1:8889/mirror/ppa.launchpad.net/webupd8team/java/ubuntu trusty main"'
+  #  - 'ansible_apt_repo="deb [arch=amd64] http://10.1.0.1:8889/mirror/ppa.launchpad.net/ansible/ansible/ubuntu trusty main"'
+  #  - 'maas_apt_repo="deb [arch=amd64] http://10.1.0.1:8889/mirror/ppa.launchpad.net/maas/stable/ubuntu trusty main"'
+  #  - 'dell_apt_repo="deb [arch=amd64] http://10.1.0.1:8889/mirror/linux.dell.com/repo/community trusty openmanage"'
+  #  - 'juju_apt_repo="deb [arch=amd64] http://10.1.0.1:8889/mirror/ppa.launchpad.net/juju/stable/ubuntu trusty main"'