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Chapter 3 System Features
PSAX System Software Features
3-34
255-700-447
PacketStar
®
PSAX 2300 Multiservice Media Gateway User Guide
, Issue 1
Release 9.0.0
The user can manually switch traffic from the working module to the pro-
tection module (see Chapter 3 of the module user guide). This action might
be taken in preparation for removing the working module from the chassis
for maintenance purposes or testing the working module for diagnostic
purposes. When the user executes the switchover command, the
PSAX 24-Port RJ Protection Patch Panel switches control from the working
module to the protection module.
In both scenarios, the connection downtime (<250 ms) is only the amount of
time needed to switch the PSAX 24-Port RJ Protection Patch Panel from the
working connections to the protection connections.
Figure 3-6 illustrates the data flow in a 1:1 protection scheme during normal
operation, and the data flow while the protection module is in Active mode
following the failure of a working module in a protection group.
Figure 3-6. 1:1 Protection Scheme on the PSAX System
Backplane
Normal Data Flow
Working
Module
Slot 3
Standby
Protection
Module
Slot 4
Active
Protection Patch Panel
Chassis
Backplane
Backplane
Failed Working Module
Working
Module
Slot 3
Active
Protection
Module
Slot 4
Failed
Protection Patch Panel
Chassis
Backplane
Line
Line
Содержание PacketStar PSAX 2300
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