I–J
iBGP. Interior BGP.

BGP running between two routers in the same AS.

init.

A state in the OSPF neighbor adjacency process where the neighbors have seen each other's Hellos but have not established that two-way communication is possible between them.

Integrated IS-IS.

IS-IS that is providing routing information for IP destinations.

Interior BGP.
See [iBGP. Interior BGP. BGP running between two routers in the same AS.]
Intermediate System-to-Intermediate System.
See [IS-IS. Intermediate System-to-Intermediate System. IS-IS is an Interior Gateway Protocol (IGP) that uses link-state packets (link-state advertisements) flooded to all devices in the network to advertise destination reachability. Originally, IS-IS was designed for routing CLNS traffic, ...

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