Lfp Configuration Requirements; Monitoring And Verifying Lfp - Cisco ONS 15454 SDH Configuration Manual

Chapter 17 Configuring Cisco Proprietary Resilient Packet Ring
To enable and configure the LFP slave link, perform the following procedure on an ML-Series card in
the Cisco proprietary RPR other than the ML-Series card configured for the master link. Begin in global
configuration mode:
Command
Step 1
Router# interface {gigabit ethernet |
fastethernet} number
Step 2
Router(config-if)# link-fault rpr-slave
Step 3
Router(config-if)# no shutdown
Step 4
Router(config)# end
Step 5
Router# copy running-config startup-config

LFP Configuration Requirements

LFP has these configuration requirement:
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Monitoring and Verifying LFP

A slave interface in link-down state raises a carrier loss (CARLOSS) alarm in CTC. CTC does not
distinguish between a local loss on the slave link and loss due to LFP. For more information on
CARLOSS, refer to refer to the "Alarm Troubleshooting" chapter of the Cisco ONS 15454
Troubleshooting Guide or the Cisco ONS 15454 SDH Troubleshooting Guide.
The Cisco IOS status of link-down interface is shown as protocol down/link down. Neither the
show controller command nor the show interface command reveals the difference between a local loss
on the link and an LFP loss.
After LFP is configured, you can monitor the LFP status of each master or slave link using the show
link-fault command. Use this command to determine whether LFP caused the link down on a slave
interface.
A link-fault master and slave should not be configured on the same card.
The ML-Series card must be running the Enhanced microcode image.
All ML-Series cards in the Cisco proprietary RPR must be running Software Release 5.0 or later.
ML-Series card configured for DRPRI should not be configured for LFP, and LFP on DRPRI is
unsupported.
Only ML-Series card Gigabit Ethernet interfaces are eligible to become link-fault masters.
Only one link-fault master is allowed per Cisco proprietary RPR.
Gigabit Ethernet and Fast Ethernet interfaces are both eligible to become link-fault slaves.
There is no configuration limit on link-fault slaves on a Cisco proprietary RPR.
Example 17-6 illustrates the output from this command on a slave interface.
Cisco ONS 15454 and Cisco ONS 15454 SDH Ethernet Card Software Feature and Configuration Guide, R8.0
LFP Configuration Requirements
Purpose
Activates interface configuration mode to
configure the Gigabit Ethernet or Fast Ethernet
interface.
Enables link-fault slave status on the interface.
The no form of this command disables link-fault
slave status.
Enables the interface by preventing it from
shutting down.
Returns to privileged EXEC mode.
(Optional) Saves configuration changes to the
TCC2/TCC2P flash database.
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