Specifications

28-14
Cisco BPX 8600 Series Installation and Configuration
Release 9.3.0, Part Number 78-10674-01 Rev. D0, July 2001
Chapter 28 Alarms and Statistics
BME Alarms
BME Alarms
OAM cells
OAM cells coming into the root are multicast into the leaves along with data, as shown in Figure 28-2.
Figure 28-2 OAM Cells
AIS cells
AIS cells are automatically generated on the leaves, as shown in Figure 28-3, when:
• There is a loss of signal (LOS) on the far end of the root.
• There is a trunk failure.
• When the root connection is downed using the dncon command.
Figure 28-3 Alarms
BPX Switch 1 BPX Switch 2 BPX Switch 3
root
BME
12142
leaf 1
leaf 2
OAM cells
OAM cells
BPX Switch 1 BPX Switch 2 BPX Switch 3
root
BME
12143
leaf 1
leaf 2
AIS cells
AIS cells
LOS or
root down
Trunk
failure