Automate cloud provisioning

Automate cloud provisioning

BT Cloud DDI solutions


BT Cloud DDI solutions The cloud is transforming the way we offer and support computing and communications services to your users and customers. Cloud computing provides network, computing and services capacity with flexibility, efficiency and elasticity. These benefits are realised mainly through the cloud’s characteristic use of virtualisation technologies, which means you can quickly flex up capacity for services you need within minutes. If capacity demands fluctuate over time, capacity can just as quickly be withdrawn or allocated elsewhere. By having network, computing and services resources dynamically sized to dynamic capacity needs over time, you attain agility and cost efficiencies.

You can leverage public cloud services, such as those we offer, or you can build cloud functionality within you own data centre infrastructure. This ‘private cloud’ configuration can also be paired with a public cloud service in a hybrid implementation so you can support busy time services capacity while relying on the public cloud to support particular services or capacity overflow.

BT Cloud DDI solutions Whether you use a public cloud service, your own private cloud or both, our DDI cloud solutions help you achieve agility and automation benefits. Our Sapphire cloud automation appliance (CAA) enables you to automate and manage orchestrator functions related to IP address and DNS name assignment. In conjunction with the Sapphire CAA, we offer free orchestrator plug-ins to enable the automation of virtual instance IP address assignment for private clouds and supports APIs for public cloud IPAM functions. So when a virtual machine is created or destroyed, the orchestrator invokes the CAA to either assign or free up the corresponding IP address and DNS resource records. The Sapphire CAA directs orchestrator activity into the centralised IPControl IPAM database. This provides a fully automated mechanism for robust address assignment.

Our cloud DDI solutions also support virtual discovery and subnet management giving you flexible IP address capacity management. This means you can centrally manage your premises, private cloud and public cloud address space through a single, comprehensive user interface.

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Why do I need cloud IPAM?
All of your network assets, in the cloud or elsewhere, should be tracked for inventory purposes, accountability and auditing. Where you have allocated a portion of your private IP address space to your cloud deployments as an extension of your enterprise network, individual address assignments must be managed to assure uniqueness as in non-cloud scenarios. Integration with cloud automation and orchestration tools streamline the management of virtual machines while assigning IP addresses within a common workflow.
What’s the difference between a VM and VNF?
A VM is a ‘virtual machine’ while VNF stands for ‘virtualized network function’. A VM is a discrete virtual machine provisioned for a particular function. A VNF is a network function such as routing or DNS where the provision of the function may comprise one or more VMs. The abstraction of VNFs enables creation of multi-function service flows for software defined networks, while enabling capacity management of each function to be managed through the instantiation and destruction of VMs comprising the VNF in accordance with service capacity demands.
Do my cloud VMs / VNFs need DNS entries?
If your VMs / VNFs are intended to be reachable by end users or other devices, virtual or otherwise, they will need DNS entries. For end users, a DNS entry enables access to the device by its domain name instead of its IP address, which they’d have no way of determining. For other devices to access this device, use of a name reference enables you to fully leverage the elasticity benefits of the cloud and software defined networks. For example, with a software defined network flow of data packets through a series of VNFs, a particular function may be provided by multiple virtual servers. So expanding capacity simply requires provisioning of additional virtual servers; contraction requires destruction. In either case, the prior servers in the flow may refer to the next set of servers by name, which can be mapped to one or more IP addresses. Managing the IP addresses associated with the function name in DNS enables seamless elasticity in your data flows. Adding capacity merely adds IP addresses to the name so the data flow ensues through additional servers.
How can BT help automate cloud IPAM?
Our BT Cloud Automation Appliance (CAA) supports automation integration, accepting calls from Ansible, Puppet, Chef, SaltStack, Fabric, user scripts, etc, and interfacing with our IPAM solution to automate IP address and subnet assignment for cloud automation. The CAA also accepts calls from vRealize and OpenStack. The CAA also interfaces with public cloud providers including AWS and Azure to provide a single IPAM workflow source for private and public clouds.



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