Cisco NCS1004 Manual page 19

Configuring Controllers
Idle Insertion
When a fault occurs on the trunk port, you can hold the propagation of local faults using the idle insertion
feature. This feature is enabled on the ethernet controller by configuring the hold-off timer.
When the fault occurs on the trunk, idles are inserted in the traffic stream from the trunk port to the client port
for the duration of the configured holdoff-time. If the trunk port remains faulty beyond the configured
holdoff-time, a local fault is transmitted towards the client device. If the trunk recovers from the fault before
the holdoff-time expires, traffic resumes.
This feature can be used on customer deployments to prevent reset of client ports during a PSM switchover.
You can enable the idle insertion feature by using the following commands:
configure
controller HundredGigECtrlr Rack/Slot/Instance/Port
holdoff-time trunk-fault time-value
The range of timevalue is from 0 ms to 3000 ms.
The following is a sample for enabling the hold off -timer in 100GE controllers:
RP/0/RP0/CPU0:ios#configure
RP/0/RP0/CPU0:ios(config)#controller HundredGigECtrlr 0/1/0/10
RP/0/RP0/CPU0:ios (config-eth-ctrlr)#holdoff-time trunk-fault 3000
RP/0/RP0/CPU0:ios(config-eth-ctrlr)#commit
To view the hold-off time that is configured on 100GE controller, use the following command:
show controllers hundredGigECtrlr Rack/Slot/Instance/Port
Example
RP/0/RP0/CPU0:ios#show controllers HundredGigECtrlr 0/1/0/10
Fri Feb 22 18:58:06.888 UTC
Operational data for interface HundredGigECtrlr0/1/0/10:
State:
Phy:
Autonegotiation disabled.
Operational values:
Administrative state: enabled
Operational state: Up
LED state: Green On
Maintenance: Disabled
AINS Soak: None
Total Duration: 0 hour(s) 0 minute(s)
Remaining Duration: 0 hour(s) 0 minute(s) 0 second(s)
Laser Squelch: Enabled
Media type: Not known
Statistics:
FEC:
Corrected Codeword Count: 0
Uncorrected Codeword Count: 0
Speed: 100Gbps
Duplex: Full Duplex
Flowcontrol: None
Loopback: None (or external)
Idle Insertion
Configuring Controllers
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