diff --git a/doc/openstack-ops/ch_arch_network_design.xml b/doc/openstack-ops/ch_arch_network_design.xml index 5307e67c..de7a9802 100644 --- a/doc/openstack-ops/ch_arch_network_design.xml +++ b/doc/openstack-ops/ch_arch_network_design.xml @@ -8,20 +8,21 @@ ]> Network Design OpenStack provides a rich networking environment, and this chapter details the requirements and options to deliberate when designing your cloud. - If this is the first time you are deploying a cloud + If this is the first time you are deploying a cloud infrastructure in your organisation, after reading this section, your first conversations should be with your networking team. Network usage in a running cloud is vastly different from traditional network deployments, and has the potential to be disruptive at both a connectivity and a policy - level. + level. For example, you must plan the number of IP addresses that you need for both your guest instances as well as management infrastructure. Additionally, you must research and discuss @@ -33,7 +34,7 @@ services that are essential for stable operation.
Management Network - A management network (a separate network for use by your + A management network (a separate network for use by your cloud operators), typically consisting of a separate switch and separate NICs (Network Interface Cards), is a recommended option. This @@ -175,8 +176,14 @@ tried-and-true legacy nova-network settings or the neutron project for OpenStack Networking. Both offer networking for launched instances with different implementations and requirements. - For OpenStack Networking with the neutron project, typical configurations are documented with the idea that any setup you can configure with real hardware you can re-create with a software-defined equivalent. Each tenant can contain typical network elements such as routers and services such as DHCP. - This table discusses the networking deployment options when using the legacy nova-network options for networking set up between virtual machine instances with a column about equivalent neutron configuration: + For OpenStack Networking with the neutron project, typical + configurations are documented with the idea that any setup you can + configure with real hardware you can re-create with a + software-defined equivalent. Each tenant can contain typical network + elements such as routers and services such as DHCP. + This table discusses the networking deployment options for both + legacy nova-network options and an equivalent neutron configuration: + @@ -278,9 +285,12 @@ - + Both nova-network and neutron services provide similar capabilities, + such as VLAN between VMs. You also can provide multiple NICs (Network + Interface Cards) on VMs with either service. Further discussion + follows.
- VLANs + VLAN Configuration within OpenStack VMs VLAN configuration can be as simple or as complicated as desired. The use of VLANs has the benefit of allowing each project its own subnet and @@ -298,7 +308,7 @@
- Multi-NIC + Multi-NIC Provisioning OpenStack Compute has the ability to assign multiple NICs to instances on a per-project basis. This is generally an advanced feature and not an everyday