Single data and management network (ESXi, Hyper-V, KVM, or XenServer)

In this topology, both the data network and management network are the same network. All communications between Lenovo XClarity Administrator and the network occurs over the Eth0 network interface on the host.

Before you begin

Ensure that all appropriate ports are enabled, including ports that XClarity Administrator requires (see Port availability).

Ensure that the minimum required firmware is installed on each device that you intend to manage using XClarity Administrator. For information about firmware requirements, see Supported firmware.

Important: Configure the devices and components in ways that minimize IP address changes. Consider using static IP addresses instead of Dynamic Host Configuration Protocol (DHCP). If DHCP is used, ensure that IP address changes are minimized.
Attention: If you intend to manage CMMs that are running a firmware level of Flex stack release 2PET12K through 2PET12Q, that have been running more than three weeks, and that are in a dual-CMM configuration, you must virtually reseat the CMMs before updating firmware using XClarity Administrator.

About this task

Important: Implementing a shared data and management network can cause disruptions in traffic, such as packets being dropped or management-network connectivity issues, depending on your network configuration (for example, if traffic from servers have a high priority and traffic from the management controllers have a low priority). The management network uses UDP traffic in addition TCP. UDP traffic can have a lower priority when the network traffic is high.

The following figure illustrates one way to set up your environment if the data network and management network are the same network. The numbers in the figure correspond to the numbered steps in the following sections.

Note: This figure does not depict all cabling options that might be required for your environment, depending on the rack switches, rack servers, and chassis components that you might have. Instead, this figure shows only the cabling-option requirements for the rack servers, rack switches, Flex switches, and CMMs as they relate to setting up a single data/management network.
Figure 1. Sample single data and management network topology
Illustrates a single data and management network in an ESXi, Hyper-V, KVM, or XenServer environment.
Important: You can setup XClarity Administrator on any system that meets the requirements for XClarity Administrator, including a managed server. If you use a managed server for the XClarity Administrator host:
  • You must implement either a virtually separate data and management network topology or a single data and management network topology.
  • You cannot use XClarity Administrator to apply firmware updates to that managed server. Even when only some of the firmware is applied with immediate activation, XClarity Administrator forces the target server to restart, which would restart XClarity Administrator as well. When applied with deferred activation, only some firmware is applied when the XClarity Administrator host is restarted.
  • If you use a server in a Flex System chassis, ensure that the server is set to automatically power on. You can set this option from the CMM web interface by clicking Chassis Management > Compute Nodes, then selecting the server, and selecting Auto Power for the Auto Power On Mode.

If you intend to install XClarity Administrator to manage existing chassis and rack servers that have already been configured, proceed to Step 5: Install and configure the host.

For additional information about planning for this topology, including information about network settings and Eth1 and Eth0 configuration, see Single data and management network.