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Introduction to Grids
Introduction to Grids
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Introduction to Grids
A Grid is a group of two or more NIOS appliances that share sections of a common, distributed, built-in database and which you configure and monitor
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through a single, secure point of access: the Grid Master. A Grid can include Infoblox appliances and vNIOS appliances. A vNIOS appliance is a non-Infoblox hardware platform running the vNIOS software package. For supported vNIOS platforms, see Supported vNIOS Appliance Models and Specifications.
Infoblox appliances support both IPv4 and IPv6 networks and you can configure a Grid in one of the following modes:

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Grid Master can be either an HA master or a single master; that is, an HA (high availability) pair or a single appliance. Similarly, a Grid member can be either a single member or an HA member. You can add single appliances and HA pairs to a Grid, forming single members and HA members respectively. A single Grid member can be either an Infoblox appliance or a vNIOS appliance. An HA Grid member can be a pair of Infoblox appliances or vNIOS appliances. For information, see Supported vNIOS Appliance Models and Specifications.
The Grid Master communicates with every Grid member in a hub-and-spoke configuration. Intra-Grid communication is based on the type of IP address used by the Grid member to join the Grid Master. An IPv4-only Grid Master uses IPv4 and an IPv6-only Grid Master uses IPv6 for intra-Grid communication. However, a dual mode Grid Master uses either IPv4 or IPv6 depending on the IP address type used by the Grid member to join the Grid Master. For an HA member, the Grid Master communicates with the active node, which in turn communicates with the passive node, as shown in Figure 5.2.

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Figure 5.2 Grid Communications to an HA Member

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When adding vNIOS appliances to a Grid, you centralize the management of core network services of the virtual appliances through the Grid Master. vNIOS appliances support most of the features of the Infoblox NIOS software, with some limitations as described in Appendix E, "vNIOS Appliances".
For additional information specific to each platform, refer to the Quick Start Guide for Installing vNIOS Software on Riverbed Services Platforms and the Quick Start Guide for Installing vNIOS Software on VMware Platforms.
By default, Grid communications use the UDP transport with a source and destination port of 1194. This port number is configurable. For a port change to take effect, one of the following must occur: the HA master fails over, the single master reboots, or the Grid restarts services.
After adding an appliance or HA pair to a Grid, you no longer access the Infoblox GUI on that appliance. Instead, you access the GUI running on the Grid Master. Although you can create multiple administrator accounts to manage different services on various Grid members, all administrative access is through the Grid Master. So even if someone has administrative privileges to a single Grid member, that administrator must access the GUI running on the Grid Master to manage that member.
You can access the Infoblox GUI through an HTTPS connection to one of the following IP addresses and ports on the Grid Master:

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