5 Verifying the NTP configuration

The Network Time Protocol (NTP) is required to keep the controller in synchronization with your network hardware and virtual devices. It is automatically installed with the controller unless already installed on your machine. In most cases NTP will already be installed and configured. (A new NTP installation synchronizes with default time servers if your machine is not already configured for specific time servers.) To verify that NTP is configured on your system, do the following:

1.Run the following command:

~$ ntpdc -c peers

If the command output returns a server list similar to the following, one or more NTP servers are configured on the system.

remotelocal st poll reach delay offset disp

=======================================================================

=clock.example.net

192.0.2.105

16

64

0

0.000000

0.000000

3.99217

=myco.altopt.ca

192.0.2.137

16

64

0

0.000000

0.000000

3.99217

If no NTP servers are configured on the controller system, contact your system administrator for further assistance before operating the controller.

2.Go to “Operating the HP VAN SDN Controller” (page 17).

16 Verifying the NTP configuration

Page 16
Image 16
HP VAN SDN Controller Software Products manual Verifying the NTP configuration, ~ $ ntpdc -c peers

VAN SDN Controller Software Products specifications

HP VAN SDN Controller Software Products represent a significant advancement in network management by leveraging software-defined networking (SDN) principles. These products aim to centralize control of network resources, provide enhanced automation, and simplify network management, which can dramatically improve the overall performance and agility of data centers.

One of the main features of HP VAN SDN Controller is its ability to enable an application-centric network environment. By separating the control plane from the data plane, network administrators can gain a holistic view of the entire network. This separation allows for dynamic reconfiguration of network devices and sets the stage for the development of innovative applications that can respond to real-time network conditions.

The controller supports OpenFlow as its primary protocol, ensuring interoperability with a wide range of network devices from different vendors. This compatibility facilitates a heterogeneous network environment, allowing organizations to transition to SDN at their own pace without needing to replace all existing hardware. It also promotes vendor diversity, reducing the risk of vendor lock-in.

HP VAN SDN Controller features robust security capabilities, including support for micro-segmentation, which helps in isolating critical components within the network. This layer of security can safeguard sensitive data and protect against threats, ensuring that only authorized traffic is allowed within designated network segments.

Another key characteristic is the controller's emphasis on automation and orchestration. Through APIs and built-in tools, network policies can be defined and applied consistently across the entire network. This intelligent automation reduces the potential for human error and accelerates the implementation of networking changes, enabling organizations to adapt quickly to evolving business needs.

The HP VAN SDN Controller also incorporates advanced analytics capabilities that provide real-time visibility into network performance. These analytics can help in troubleshooting, forecasting capacity needs, and optimizing resource utilization, contributing to improved operational efficiency and reduced downtime.

Furthermore, the scalable architecture of the HP VAN SDN Controller makes it suitable for various environments, from small enterprises to large-scale data centers. The product supports multi-tenancy, allowing multiple virtual networks to coexist on the same infrastructure, which can be ideal for service providers and organizations operating within cloud environments.

In summary, HP VAN SDN Controller Software Products deliver a powerful suite of features and technologies that enhance network control, security, automation, and scalability, positioning organizations to leverage the full potential of software-defined networking.