Garbage collection
Automatic cleanup of expired leases, stale records, orphaned objects, old logs, or unreferenced data. Cleanup policy should preserve audit history while preventing stale state from becoming operational truth.
Read definitionAlphabetical glossary
G glossary terms
14 definitions beginning with G.
14 terms
Gateway
A router or next-hop system that connects a host's local subnet to other networks. DHCPv4 option 3 commonly distributes default router addresses.
Read definitionGeoDNS
DNS response selection based on the estimated location or network of the requester. The decision may use resolver address, ECS data, latency, policy regions, or anycast ingress.
Read definitionGIADDR
The gateway IP address field inserted by a DHCP relay agent. The server uses it to identify the client link and select the appropriate subnet, pool, and options.
Read definitionGlobal scope
The address scope intended for reachability beyond the local link, subject to routing and policy. Global unicast addresses normally come from 2000::/3, though the concept of scope is broader than that allocation block.
Read definitionGlobal unicast address (GUA)
An IPv6 unicast address designed for global routing, generally allocated from 2000::/3 at present. A GUA can still be filtered or used only internally depending on routing policy.
Read definitionGlue
Address records published in a parent zone to provide the addresses of delegated child name servers when those server names cannot otherwise be resolved without circular dependency. Glue is not authoritative child-zone data.
Read definitionGlue record
An A or AAAA record placed in a parent zone to support a delegation. Resolvers treat glue differently from authoritative answer data and apply bailiwick rules before caching it.
Read definitionGMC
Grid Master Candidate, an Infoblox member configured to take over the Grid Master role if the active Grid Master fails. It should be sized, licensed, synchronized, and operationally tested for takeover.
Read definitionGrid
An Infoblox NIOS management and replication domain made up of a Grid Master and members. It centralizes configuration, object data, monitoring, and administrative control while members provide services.
Read definitionGrid Master
The primary management authority for an Infoblox Grid. It stores and distributes configuration, coordinates members, and provides the main administrative interface and API endpoint.
Read definitionGrid member
An Infoblox appliance or virtual instance joined to a Grid. A member can provide DNS, DHCP, reporting, discovery, or other services while receiving configuration from the Grid Master.
Read definitionGSLB
Global Server Load Balancing, the use of DNS and health, geography, topology, or load information to direct clients to an appropriate application endpoint. Some vendors call it global traffic management.
Read definitionGSS-TSIG
A method that uses Generic Security Service mechanisms, commonly Kerberos, to authenticate DNS dynamic updates with TSIG-style transaction protection. It underpins secure dynamic update in many Active Directory environments.
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