Timer (G.8032) - Allied Telesis x510-28GTX Command Reference Manual

G.8032 E R P
THERNET ING ROTECTION
(G.8032)
TIMER

timer (G.8032)

Overview Use this command to configure a timer for a specified G.8032 Ethernet Ring
Protection (ERP) instance profile.
timer wait-to-restore {<1-12>|default}
Syntax
timer hold-off {<0-100>|default}
timer guard-timer {<1-200>|default}
Mode G8032 Profile Configuration
Example To set the wait-to-restore timer of a profile named "prof_1" to a value of 1 minute,
use the following commands:
awplus(config)#
awplus(g8032-profile-config)#
C613-50170-01 Rev B
S C
WITCHING OMMANDS
Parameter Description
wait-to-restore This timer is used to soak signal failure abatement to ensure the
signal failure abatement is not intermittent. This timer is only
used by the RPL Owner when in the revertive operation, and
thus is attempting to restore the ring. It is configurable in steps
of 1 to 12 minutes (default is 5 minutes).
hold-off
This timer allows any other underlying protection schemes to
recover before G.8032 reacts to its defect as this gives time for
the G.8032 defect to clear. A classic example is when the ERP
Physical ring port is carried over a SONET/SDH transmission
system that itself has 50ms recovery times. If G.8032 detects a
failure, then increasing this timer to some value greater than
50ms would allows the SONET/SDH system to recover and have
the defect that G.8032 detected disappear thus preventing the
need for G.8032 to try and recover. The Hold Off timer is
configurable in 0 to 10 seconds in steps of 100ms (default is 0
ms).
guard-timer
This is the amount of time that an ERP instance discards most
R-APS messages before being allowed to process them. It is
used when a clearing condition occurs yet at the same time
older messages are still propagating around the ring with failure
indications. For example two nodes that just noticed a link
failure abatement condition could start clearing and almost
immediately one of them could receive an old Signal Fail
indication message from the other node (that was still in flight)
which in turn causes the receiving node to react to the Signal
Fail inadvertently. This timer is particularly useful where R-APS
propagation time through the ring is large. Refer to ITU-T G.8032
for more information. The Guard timer is configurable in 10ms
steps between 10ms and 2 seconds (default is 50 for 500ms).
g8032 profile prof_1
Command Reference for x510 Series
AlliedWare Plus™ Operating System - Version 5.4.7-1.x
timer wait-to-restore 1
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