Interfaces
Page 348 7750 SR Interface Configuration Guide
Description This command specifies the error rate at which to declare the signal fail condition for the signal degrade
(SD). The value represents an error rate of 10E-value.
The SD threshold must::
• Be greater than the SF threshold.
• Be 5 or higher before setting the sf-sd-method to bip8.
Default 7
Parameters threshold — Specifies the exponent of the error rate, thus an error rate from 10E-3 to 10E-7.
Values 5 — 9
sm-tti
Syntax sm-tti
Context config>port>otu
Description This command enables the context to configure section monitoring trail trace identifier parameters.
expected
Syntax expected {string string | bytes byte-sequence | auto-generated | use-rx}
Context config>port>otu>sm-tti
Description This command enables the user to configure the expected RX Trail Trace Identifier (TTI) for Section Moni-
toring (SM) in the OTU overhead. This identifier can be a string or a non-printable sequence of bytes. The
length of the string or sequence of bytes cannot exceed 64 bytes. This trace should match the expected far-
end port’s SM trace. When this trace does not match the received SM trace, the OTU-TIM alarm will be
reported if enabled.
Default Blank (all zeros)
Parameters auto-generated — Sets the default
string string — Sets the SM TTI to the string provided by the user. If the string is less than 64 bytes, the
remaining bytes will be set to 0.
bytes — [byte1 byte2 ... byte64]. Sets the SM TTI to the sequence of bytes provided by the user. If the user
provides less than 64 bytes, the remaining bytes will be set to 0.
use-rx — Copies the received sm-tti to the expected either as a string or a sequence of bytes depending on
the received sm-tti data.
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