Cisco ONS 15454 SDH - Configuring Triggers for CRC Errors

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Cisco ONS 15454 and Cisco ONS 15454 SDH Ethernet Card Software Feature and Configuration Guide, R8.0
Chapter 26 Configuring IEEE 802.17b Resilient Packet Ring
Configuring Triggers for CRC Errors
Configuring Triggers for CRC Errors
You can configure a span shutdown when the ML-Series card receives CRC errors at a rate that exceeds
the configured threshold and configured soak time.
To enable and configure the triggers for CRC errors, perform the following procedure, beginning in
global configuration mode:
Step 4
Router(config)# end
Returns to privileged EXEC mode.
Step 5
Router# copy running-config startup-config
(Optional) Saves configuration changes to the
TCC2/TCC2P flash database.
Command Purpose
Command Purpose
Step 1
Router(config)# interface rpr-ieee 0
Activates interface configuration mode to
configure the RPR-IEEE interface.
Step 2
Router(config-if)# trigger crc-error
threshold
crc-error-rate {east | west |
<cr>}
Configures the threshold for the CRC errors on the
RPR-IEEE span. The threshold is the percentage
of received, continuously CRC-errored frames
required during the delay period (soak time).
When the threshold is crossed, the excessive crc
alarm is declared. This also triggers the CRC error
action, if one is configured.
For
crc-error-rate, specify the CRC packet
error rate variable in the range from 2 to 4. The
error rate variable corresponds to the CRC error
rate as a percentage of traffic.
• 2 is 10e-2 or 1% of traffic (1 CRC error in100
frames).
• 3 is 10e-3 or 0.1% of traffic. (1 CRC error
in1000 frames).
• 4 is 10e-4 or 0.01% of traffic (1 CRC error
in10000 frames).
The default threshold is 3.
(Optional) You can also specify the east or west
ringlet.