Interface Configuration
7750 SR Interface Configuration Guide Page 151
Transceiver Data
Transceiver Status : not-equipped
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Traffic Statistics
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Input Output
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Octets 0 0
Packets 0 0
Errors 0 0
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Port Statistics
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Input Output
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Unicast Packets 0 0
Multicast Packets 0 0
Broadcast Packets 0 0
Discards 0 0
Unknown Proto Discards 0
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Ethernet-like Medium Statistics
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Alignment Errors : 0 Sngl Collisions : 0
FCS Errors : 0 Mult Collisions : 0
SQE Test Errors : 0 Late Collisions : 0
CSE : 0 Excess Collisns : 0
Too long Frames : 0 Int MAC Tx Errs : 0
Symbol Errors : 0 Int MAC Rx Errs : 0
In Pause Frames : 0 Out Pause Frames : 0
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The above configuration results in an SD threshold of 5*10E-5 (0.00005) and an SF threshold of
5*10E-3 (0.005) over the default 10 second window. If this port is a 1GbE port supporting symbol
monitoring then the error rate is compared against 1,250,000,000 symbols (10 seconds worth of
symbols on a 1GbE port 125,000,000). If the error count in the current 10 second sliding window
is less than 62,500 then the error rate is below the signal degrade threshold and no action is taken.
If the error count is between 62,501 and 6,250,000 then the error rate is above signal degrade but
has not breached the signal failure signal threshold and a log event will be raised. If the error count
is above 6,250,000 the signal failure threshold is crossed and the port will enter an operation state
of down. Consider that this is a very simple example meant to demonstrate the function and not
meant to be used as a guide for configuring the various thresholds and window times.
A port is not returned to service automatically when a port enters the failed condition as a result of
crossing a signal failure threshold for both CRC-Monitor and Symbol-Monitor. Since the port is
operationally down without a physical link error monitoring stops. The operator may enable the
port using the shutdown and no shutdown port commands. Other port transition functions like
clearing the MDA or slot, removing the cable, and other physical link transition functions.
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