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  • It is not compatible with the traditional node-based licensing and it supports capacity based licensing only.
  • An IB-FLEX instance will not start if you do not configure the required minimum level of resources.
  • The resources assigned to IB-FLEX for cores and memory must be equal to or exceed the minimum designated values for the platform. For more information about IB-FLEX platforms, see About IB-FLEX Instances and FlavorPlatform Settings.
  • IB-FLEX does not support DNS64 on appliances running NIOS version 8.2.0.

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An IB-FLEX instance supports capacity-based licensing only, but it is compatible with NIOS Grid Master that uses node-based licensing. You can upgrade an IB-FLEX instance from a low-end platform to a high-end platform by increasing the resource allocation of the virtual machine. An IB-FLEX instance selects the default internal settings for a respective instance flavor platform based on the resource settings detected during the startup.
An IB-FLEX instance supports VMware ESXi with or without SR-IOV enabled and OpenStack with KVM both with or without SR-IOV. The table below provides information about the IB-FLEX platform resource specification:

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  • You cannot mark an IB-FLEX appliance as a Grid Master or Grid Master Candidate with resources that are intended for small authoritative DNS, small recursive DNS (with acceleration), medium recursive DNS (with acceleration), and large recursive DNS (with acceleration). For more information, see Table 8.8.

  • Infoblox recommends that you increase the memory to the following for IB-FLEX members to use certain features:

    • 16 GB, instead of the standard 14 GB, to use DNS analytics.

    • 20 GB, instead of the standard 18 GB, to use Threat analytics when RPZ is assigned to the IB-FLEX member.

Configuring DNS Cache Acceleration on IB-FLEX

When you enable the virtual DNS cache acceleration feature on the IB-FLEX, the appliance acts as a high-speed DNS caching-only name server. This feature provides DNS cache acceleration support for recursive UDP DNS queries on the IB-FLEX. The DNS cache acceleration feature is bundled with the Flex Grid Activation license. When you install this license, you are entitled to use the DNS cache acceleration feature on IB-FLEX.
IB-FLEX supports RPZ, but the response for RPZ queries are not cached by the DNS cache accelerator. Instead, these queries are bypassed to the host and you can configure cache expiry period for RPZ queries. Note that the maximum cache lifetime for DNS cache acceleration on IB-FLEX is set to 300 seconds when you configure RPZ zones for a member.
You can also use Elastic Scaling to pre-provision DNS cache acceleration on IB-FLEX. IB-FLEX supports Intel x86_64 systems with IOMMU, Hugepages processors, virtio-net, and Intel 82599 10 G NIC and SRIOV with Intel 82599 ethernet controllers for DNS cache acceleration.
You can configure DNS cache acceleration on IB-FLEX using the Grid Manager or API. To view accelerated cache details, you can either log in to Grid Manager, or use CLI commands, or Infoblox API.
Infoblox supports Auto Scaling that contains OpenStack packages to automatically scale the required number of resources based on your application. For more information, refer to the vNIOS™ for KVM Hypervisor and KVM-based OpenStack Installation Guide.

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Note: Certain features such as DNS64, Sort list, and NIC bonding that are supported on the IB-4030 platform are not supported on IB-FLEX. These features do not work if you replace IB-4030 appliances with IB-FLEX appliances.

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Associated characteristics of the IB-FLEX appliance include the following:

• Cache delete through the Grid Manager, CLI or Infoblox API. For more information about cache delete, see Clearing DNS Cache.
• ACL for IPv4 and IPv6.
• Sending SNMP traps for DNS cache acceleration service on IB-FLEX.
• SNMP queries for IB-FLEX.
• Fixed RRSET order for accelerated responses, for A and AAAA record types, for IPv4 and IPv6.
• Both non-accelerated recursive and authoritative DNS with Software ADP.
The table below lists the features that are either supported or not supported on Software DNS cache acceleration
platforms:
Table 8.9 Features on the Software ADP DNS cache acceleration platforms