Specifications

13-12
Cisco BPX 8600 Series Installation and Configuration
Release 9.3.0, Part Number 78-10674-01 Rev. D0, July 2001
Chapter 13 Installing the BPX Switch Cards
Installation of APS Redundant Frame Assembly and Backcards
You can execute addyred even if the primary and secondary slots are empty. If cards reside in the
primary and secondary slots, the system checks for card compatibility. Two types of incompatibility can
occur: back card and jumper or cable.
BPX mismatch types:
• feature mismatch
• back card mismatch
• front card mismatch
If incompatibilities exist, the message “Y-Cable Conflict” appears on screen. Specific conflicts are
listed in reverse video in the Y-Cable Redundancy screen. See the dspyred descriptionintheCisco
WAN Switching Command Reference for details.
Y-Cable redundancy is supported for both the UXM and BXM trunk cards at the edge of the ATM cloud.
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.
Table 13-1 BXM SONET APS
APS
1:1
The APS 1:1 redundancy provides line redundancy, using adjacent lines on
thesameBXMbackcard.
APS
1+1
The APS 1+1 redundancy provides card and line redundancy, using the same
numbered ports on adjacent BXM backcards.