Cisco BPX 8650, Руководство по установке и настройке

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13-12
Cisco BPX 8600 Series Installation and Configuration
Release 9.3.30, Part Number 78-12907-01 Rev. E0, May 2005
Chapter 13 Installing the BPX Switch Cards
Installation of APS Redundant Frame Assembly and Back Cards
You can execute the addyred command 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.
The following are the 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. For information about the
dspyred command, refer
to the Cisco WAN Switching Command Reference, Release 9.3.30 .
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 Back Cards
The procedures in this section provide installation instructions for the SONET Automatic Protection
System (APS) Redundant Frame Assemblies and back cards. 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.
APS 1:1 Redundancy Installation
APS 1:1 redundancy provides line redundancy only and is supported with the standard BXM OC-3 and
OC-12 front and back cards. Figure 13-9 and Figure 13-10 illustrate the APS protocols for BXM.
Table 13-1 BXM SONET APS
Type Description
APS
1:1 The APS 1:1 redundancy provides line redundancy, using adjacent lines on the same
BXM back card.
APS 1+1 The APS 1+1 redundancy provides card and line redundancy, using the same
numbered ports on adjacent BXM back cards.