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PPP MAGIC NUMBER QUALITY MONITORY - Coggle Diagram
PPP MAGIC NUMBER QUALITY MONITORY
PPP Detection
A) Loop Detection
:star: PPP detects looped links using a feature involving magic numbers.
:star: Each router generates and sends a randomly chosen magic number.
:star: When the node sends PPP LCP messages, these messages may
include a magic number.
:star: If a router receives its own magic number,
the link is looped, and may be taken down.
PPP Error Detection
:check: Identifies fault conditions.
:check: The Quality and
Magic Number options help ensure a reliable, loop-free data link.
:check: The Magic Number field helps in detecting links that are in a
looped-back condition.
:check: Until the Magic-Number Configuration Option has been successfully negotiated,
:check: the Magic-Number must be
transmitted as zero
:check: Magic numbers are generated randomly
at each end of the connection.
PPP Link Quality Monitoring
:silhouettes: PPP suite includes a feature that allows devices to analyze
the quality of the link between each router.
:silhouettes: This is
called PPP Link Quality Monitoring or LQM.
:silhouettes:LCP exchanges statistics about the percentage of frames
received without any errors
:silhouettes: if the percentage
falls below a configured value, the link is dropped.
SUMMARY
:fire: Loops on a circuit
:fire: PPP use "Magic Number" to detect loop
:fire: FCS is used to detect frames with error
:fire: Link quality monitoring
