Crc Threshold Configuration - Cisco ONS 15454 SDH Configuration Manual

Chapter 4 Configuring Interfaces
To configure the IP address, bridge group, or encapsulation for the POS interface, perform the following
procedure, beginning in global configuration mode:
Command
Step 1
Router(config)# interface pos number
Step 2
Router(config-if)# {ip address ip-address
subnet-mask | bridge-group
bridge-group-number }
Step 3
Router(config-if)# shutdown
Step 4
Router(config-if)# encapsulation type
Step 5
Router(config-if)# no shutdown
Step 6
Router(config)# end
Step 7
Router# copy running-config startup-config

CRC Threshold Configuration

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. ML cards support CRC threshold configuration
functionality on FE / GE / POS interfaces.
To enable and configure the triggers for CRC errors on POS, perform the following procedure,
beginning in global configuration mode:
Command
Step 1
Router(config)#int pos0
Router(config-if)#trigger crc-error
threshold <threshold_value>
Step 2
Router(config-if)#no trigger crc-error
threshold < threshold_value>
Cisco ONS 15454 and Cisco ONS 15454 SDH Ethernet Card Software Feature and Configuration Guide, R8.0
CRC Threshold Configuration
Purpose
Activates interface configuration mode to
configure the POS interface.
Sets the IP address and subnet mask.
or
Assigns a network interface to a bridge group.
Manually shuts down the interface. Encapsulation
changes on POS ports are allowed only when the
interface is shut down (ADMIN_DOWN).
Sets the encapsulation type. Valid values are:
hdlc—Cisco HDLC
•
lex—(Default) LAN extension, special
•
encapsulation for use with Cisco ONS
Ethernet line cards
• ppp—Point-to-Point Protocol
Restarts the shutdown interface.
Returns to privileged EXEC mode.
(Optional) Saves configuration changes to
NVRAM.
Purpose
Sets the CRC threshold value. If the percentage of
CRC errored frames received on this interface is
greater than this value, we consider this interface
as seeing excessive CRC. The valid values are 2, 3
and 4 indicating thresholds of 10e-2 (1%),
10e-3(0.1%) and 10e-4(.01%). The default value
is 3.
Sets the threshold value back to the default value
3.
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