NFD

# NFD Management protocol

NFD Management protocol allows users, tools, and control plane programs to retrieve, monitor, and alter NFD forwarder state.

## Basic mechanisms

NFD Management protocol uses Interest-Data exchange.

**[[StatusDataset|Status Dataset]]** defines how status information about a collection of entities is encoded, segmented, and published as Data packets.

This mechanism, as well as simple Interest-Data exchange, is useful for retrieving forwarder state.

**[[Notification|Notification Stream]]** is a way to get updates about events happening in the forwarder.

This mechanism is useful for monitoring forwarder state.

**[[ControlCommand|Control Command]]** defines the request and response format of commands that can alter forwarder state, and how these commands should be signed and authenticated.

This mechanism is useful for altering forwarder state.

## Modules

**[[ForwarderStatus]]** publishes version information and global counters of the forwarder.

**[[FaceMgmt|FaceManager]]** provides:

* commands to create and destroy faces

* commands to enable and disable [[LocalControlHeader]] features on a face

* a dataset of description of all active faces and their counters

* a notification stream for face creating and destroying events

**[[FibMgmt|FibManager]]** provides:

* commands to insert, update, and delete FIB entries and nexthop records

* a dataset of FIB entries and nexthop records

**[[StrategyChoice|StrategyChoiceManager]]** provides:

* commands to choose the forwarding strategy for a namespace