Specifications
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Cisco MWR 2941 Mobile Wireless Edge Router Release 3.5 Software Configuration Guide, Cisco IOS Release 15.1(3)MR
OL-26895-01
Chapter 26 Configuring Link Noise Monitor
Usage Notes
• lcv value—Threshold (in bit errors per second) that when exceeded for the configured duration
when the set keyword has been specified, creates a condition (warning or link removal), or when
fallen below for the configured duration when the clear keyword has been specified, clears the
condition.
For T1 links:
–
Valid range is 5 to 1544.
–
For Link Warning monitoring, the default is 15.
–
For Link Removal monitoring, the default is 154.
For E1 links,
–
Valid range is 7 to 2048.
–
For Link Warning monitoring, the default is 20.
–
For Link Removal monitoring, the default is 205.
• pcv value—Number of time slots in errors per second. If not specified by the user, this value is
calculated from the LCV threshold based on a Gaussian distribution that matches typical
noise-induced errors.
For T1 links:
–
Valid range is 3 to 320.
–
For Link Warning monitoring, the default is 15.
–
For Link Removal monitoring, the default is 145.
For E1 links,
–
Valid range is 8 to 832.
–
For Link Warning monitoring, the default is 20.
–
For Link Removal monitoring, the default is 205.
• duration seconds—Number of seconds that a threshold must be exceeded to create a condition or
fallen below to clear a condition. Valid range is 1 to 600. The default is 10.
When specified with the lcv keyword, the duration must be configured after the LCV threshold.
For example, span warn lcv 55 duration 20 is a correct way to issue the command; span warn
duration 20 lcv 55 is not.
• set—Specifies that the values configured for the span command are to be used to set a condition.
• clear—Specifies that the values configured for the span command are to be used to clear a
condition.
Usage Notes
When configuring the LNM, please note the following:
• If the warn and remove keywords are specified without any other options, the LCV and PCV
thresholds and duration defaults will be used to determine (set) and clear (clear) the condition.
• If the span command is issued with the set keyword specified (defining the LNM type and
parameters to use to determine a condition exists) and the command is not issued again with the
clear keyword specified (defining the parameters used to clear a condition), or vice versa, the values
configured for the threshold and duration will be used for both.