Huawei NetEngine80E Configuration Manual - Reliability page 60

HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
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Issue 02 (2014-09-30)
– Configures APS to work in 1:1 mode. Only the working link transmits traffic.
The protect link only carries when the working link is faulty.
– Configures APS to work in bidirectional mode. If an interface fails, both the
sender and the receiver switch their traffic to the protect link.
– one-plus-one unidirection:
– Configures APS to work in 1+1 mode. Both the working link and the protect
link transmit traffic.
– Configures APS to work in unidirectional mode. If an optical fiber to an
interface fails, only the receiver switches its traffic to the protect link.
– one-plus-one bidirection:
– Configures APS to work in 1+1 mode. Both the working link and the protect
link transmit traffic.
– Configures APS to work in bidirectional mode. If an interface fails, both the
sender and the receiver switch their traffic to the protect link.
Set the WTR time for an APS group.
1. Run:
system-view
The system view is displayed.
2. Run:
interface interface-type interface-number
Or, run:
controller cpos cpos-number
The protection interface view of the APS group is displayed.
3. Run:
aps revert wtr-time
The WTR time is set for the APS group.
The value ranges from 1 to 12 minutes.
When setting the WTR time, note the following items:
– In 1:1 mode, after a fault is rectified and the WTR time (5 minutes) expires, traffic
automatically switches back to the working link.
NOTE
If two different switchback delays are set on two protection interfaces in APS groups on two
ends of a link, the effective switchback delay depends on one of the following situations:
l If one-plus-one unidirection is configured, the switchback delays of both protection
interfaces take effect after the working interfaces recover.
l If one2one bidirection or one-plus-one bidirection is configured, the switchback delay
of the protection interface on the device with the working interface recovering later than
the other working interface takes effect on both protection interfaces.
l In a single-chassis scenario, the switchback time must be the same on two APS devices.
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3 APS Configuration
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