R
RADIUS

Remote Authentication Dial-In User Service. Authentication method for validating users who attempt to access the router using Telnet.

Random Early Detection
See [RED]
rate limiting
See [policing]
RED

(Pronounced “red”) Random Early Detection. Gradual drop profile for a given class that is used for congestion avoidance. RED tries to anticipate incipient congestion and reacts by dropping a small percentage of packets from the head of the queue to ensure that a queue never actually becomes congested.

Resource Reservation Protocol
See [RSVP]
RFC

Request for Comments. Internet standard specifications published by the Internet Engineering Task Force.

RFI

Radio frequency interference. Interference from high-frequency electromagnetic waves emanating ...

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