Specifications
26-5
Cisco BPX 8600 Series Installation and Configuration
Release 9.3.0, Part Number 78-10674-01 Rev. D0, July 2001
Chapter 26 Configuring SONET Automatic Protection System
APS 1+1 (Card and Line Redundancy)
APS 1+1 LED Displays
The backcards used for APS 1+1 with front card redundancy have an LED which indicates whether the
backcard can be pulled out for service replacement.
For example, all the lines on the card except one may be working properly and therefore the card needs
to be replaced. The backcard LED functions are listed in Table 26-5.
Note In the APS 1+1 configuration, when the primary card is active and the protection line is
active, LEDs on both backcards are green. The LED of the secondary is green because that
backcard is carrying traffic. The LED of the primary backcard is green, because that is in
the physical path of the front card in receiving traffic from the protection line. When the
backcard LED is green do not pull out the backcard, because it will disrupt traffic. When
the LED is yellow it is OK to pull out the backcard, but it should be put back as soon as
possible, because the card will be needed in the event of a switchover.
APS 1+1 (Card and Line Redundancy)
The APS 1+1 feature requires two BXM front cards, an APS redundant frame assembly, and two
redundant type BXM backcards. The two redundant BXM backcards are plugged into the APS
redundant frame assembly as shown in Figure 26-4. The types of available backcards are:
The types of redundant backcard and backplane sets required are:
• BPX-RDNT-LR-155-8 (8 port, long reach, SMF, SC connector)
• BPX-RDNT-LR-622-2 (2 port, long reach, SMF, FC connector)
• BPX-RDNT-SM-155-4 (4 port, medium reach, SMF, SC connector)
• BPX-RDNT-SM-155-8 (8 port, medium reach, SMF, SC connector)
• BPX-RDNT-SM-622 (single port, medium reach, SMF, FC connector)
Table 26-4 BXM Front Card LED Display
LED Description
Card LED, Green Active
Card LED, Yellow Inactive
Port LED, Green Line is active
Port LED, Yellow Line is standby
Table 26-5 BXM Back Card for APS 1+1 LED Display
LED Description
Green The card has at least one active line and may not be removed without affecting
service.
Yellow The card has no active lines and may be removed.
Red Not used and not applicable.