White Paper Multihoming on OpenManage Enterprise 3.3.1 Abstract This white paper describes the multihoming implementation for OpenManage Enterprise 3.3.1.
White Paper Revisions Date Description December 2019 Initial release Acknowledgments This paper was produced by the following: Author: Dan Phelps The information in this publication is provided “as is.” Dell Inc. makes no representations or warranties of any kind with respect to the information in this publication, and specifically disclaims implied warranties of merchantability or fitness for a particular purpose.
Technical support and resources Table of contents Revisions.............................................................................................................................................................................2 Acknowledgements .............................................................................................................................................................2 Table of contents ...................................................................................
Technical support and resources Executive summary OpenManage Enterprise provides for centralized management and monitoring of IT hardware resources. For a given target device such as a server or chassis, this is accomplished by connecting to the out of band service processor of the target over the network. Access control and security concerns make it advisable that you segregate the service processor or management network from other networks, particularly from corporate or externally accessible networks.
Technical support and resources 1 Addition of the secondary network interface All OpenManage Enterprise-supported hypervisors allow the addition of multiple network interfaces to a given virtual machine. Prior to OpenManage Enterprise version 3.3.1, only one network interface was supported, and all managed devices were connected to this network or routable to the same. In version 3.3.1 you can provide a secondary interface that allows for a segregated management network.
Technical support and resources 2 Configuration using the TUI The Text User Interface (TUI) is used for configuring OpenManage Enterprise. Access it through the hypervisor console. Two new items have been added to the main menu for multihoming: Select Primary Network Interface and Configure Static Routes. Accessing the TUI 2.1 Select a Primary Network Interface The primary interface is expected to be the public facing interface that allows for corporate network and Internet connectivity.
Technical support and resources Internet Open Manage Enterprise Gateway 100.10.10.70/24 (public) 173.10.1.33/24 (private) 100.10.10.1 100.10.10.0/24 173.10.1.0/24 173.10.1.1 173.10.1.35 Router Managed System No static route is required since the managed system and appliance are connected directly to the same subnet. 173.10.3.0/24 173.10.3.7 Managed System The appliance cannot route to this system without the addition of a static route.
Technical support and resources 2.2.1 Routing limitations OpenManage Enterprise 3.3.1 supports both IPv4 and IPv6 static routes. The maximum number of static routes that can be assigned to a single interface is 20.
Technical support and resources 3 DNS configuration and restrictions DNS configuration is only available on the primary network interface. To achieve DNS resolution on the secondary network, all host names must be resolvable by the DNS server provided on the primary interface. This is due to a limitation in the Linux DNS resolver.
Technical support and resources A Technical support and resources Dell.com/support is focused on meeting customer needs with proven services and support. Manuals and Documents for OpenManage Enterprise 3.3.
