3.4.1 Configure a command-triggered switching mode for an APS
group
Command-triggered APS switching modes are classified into protection lock, forcible APS
switching, and manual APS switching. Command-triggered APS switching is used during a
device upgrade, link troubleshooting, testing, and maintenance.
Context
Command-triggered APS switching modes are classified into protection lock, forcible APS
switching, and manual APS switching. Command-triggered APS switching is used during a
device upgrade, link troubleshooting, testing, and maintenance.
l
Protection lock means that services are transmitted on the working link and will not be
switched to the protect link even though the working link becomes unavailable.
l
Either forcible or manual APS switching means that services are manually switched from
the working link to the protect link. Their difference is as follows:
–
Forcible APS switching takes effect only when the protect link is working properly.
After traffic switches to the protect link, services will be interrupted if a signal degrade
(SD) error occurs on the protect link. Services will switch back to the working link if a
signal failure (SF) occurs on the protect link.
–
Manual APS switching can be performed only when both the working and protect links
are working properly. After manual APS switching is performed, services will switch
to the working link if an SF or SD error occurs on the protect link.
Perform the following steps on a protection interface in an APS group:
Procedure
l
Configure a command-triggered switching mode 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 switch-command
{
lockout
|
force
|
manual
}
A switching mode is configured for the APS group.
–
lockout
: Initiates a locked APS request in an APS group, that is, locks traffic on
the working link.
–
force
: Initiates a forced APS request in an APS group, that is, forcibly switches
traffic to the protection link.
HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
3 APS Configuration
Issue 02 (2014-09-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
56