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Cisco BPX 8600 Series Installation and Configuration
Release 9.3.10, Part Number 78-11603-01 Rev. D0, July 2001
Chapter 13 Installing the BPX Switch Cards
Installation of APS Redundant Frame Assembly and Backcards
Installation of APS Redundant Frame Assembly and Backcards
The procedures in this section provide installation instructions for the SONET Automatic Protection
System (APS) Redundant Frame Assemblies and backcards. These may be used to provide line and card
redundancy for BXM OC-3 and OC-12 cards.
The APS protocols supported by the BXM are listed in Table 13-1 and shown in Figure 13-9 and
Figure 13-10.
APS 1:1 Redundancy Installation
APS 1:1 redundancy provides line redundancy only and is supported with the standard BXM OC-3 and
OC-12frontandbackcards.
Figure 13-9 APS 1:1 Redundancy
APS 1+1 Redundancy Installation
APS 1+1 redundancy provides both card and line redundancy. It uses the standard BXM OC-3 and
OC-12 front cards but requires a special APS Redundant Backplane and APS Redundant backcards.
With previous card cages, because of the positioning of mechanical dividers, the APS card pairs could
be inserted only in slots 2 through 5 and 10 through 13. The mechanical dividers are located at slots 1
and2,5and6,9and10,and13and14.
Table 13-1 BXM SONET APS
APS
1:1
The APS 1:1 redundancy provides line redundancy, using adjacent lines on the same
BXM backcard.
APS
1+1
The APS 1+1 redundancy provides card and line redundancy, using the same
numbered ports on adjacent BXM backcards.
Working line
Protection line
17711
BPX switch
BPX switch