The IB-4030 and IB-4030-10GE are high-performance DNS caching-only name servers. Using DNS cache acceleration services, can make DNS query resolution more responsive for resolvers across the network. These appliances can be part of an Infoblox Grid or operated independent DNS-caching appliances. The IB-4030 and IB-4030-10GE appliances support DNS queries on the LAN1, LAN2, MGMT, and HA ports.

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• IB 22x5 series
• IB 40x5 series
• IB-4030 and IB-4030-10GE (Not supported from NIOS 9.0 onwards)

Following virtual appliances support software-based DNS Cache Acceleration:

• IB v22x5
• IB v40x5
• IB-FLEX
  

IB-4030 / IB-4030-10GE  implementation

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To form an HA pair, you can deploy two IB-4030 or IB-4030-10GE appliances, as shown in the following figure. Only the active node in an HA pair handles DNS traffic; the passive node in standby mode and ready to take over if a failover occurs. During a failover, the passive node builds up the DNS cache over time and does not operate with preloaded cache or hot cache. From NIOS 8.6.x onwards, hybrid HA is supported. A hybrid HA pair can comprise a physical appliance and a virtual appliance, two physical appliances, or two virtual appliances. For information about how to configure an more information on limitations of using HA pair , refer to the NIOS documentation at docs.infoblox.comcombinations, see Limitations of Using a Combination of a Physical Appliance and a Virtual Appliance for HA.

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