Alcatel-Lucent 7750 SR OS, Interface Configuration Manual

Page: 55 / 444

Interface Configuration
7750 SR OS Interface Configuration Guide Page 55
APS User-Initiated Requests
Lockout Protection
The lockout of protection disables the use of the protection line. Since the
tools>perform>aps>lockout command has the highest priority, a failed working line using the
protection line is switched back to itself even if it is in a fault condition. No switches to the
protection line are allowed when locked out.
Request Switch of Active to Protection
The request or manual switch of active to protection command switches the active line to use the
protection line unless a request of equal or higher priority is already in effect. If the active line is
already on the protection line, no action takes place.
Request Switch of Active to Working
The request or manual switch of active to working command switches the active line back from
the protection line to the working line unless a request of equal or higher priority is already in
effect. If the active line is already on the working line, no action takes place.
Forced Switching of Active to Protection
The forced switch of active to protection command switches the active line to the protection line
unless a request of equal or higher priority is already in effect. When the forced switch of working
to protection command is in effect, it may be overridden either by a lockout of protection or by
detecting a signal failure on the protection line. If the active line is already on the protection line,
no action takes place.
Forced Switch of Active to Working
The forced switch of active to working command switches the active line back from the protection
line to the working unless a request of equal or higher priority is already in effect.