Cisco ONS 15454 Troubleshooting Manual page 375

Chapter 2 Alarm Troubleshooting
If you are creating a large ring (more than 127 nodes), the MAX-STATIONS alarm might be raised until
the ring is closed and stable.
MAX-STATIONS does not suppress any other alarms. However, this alarm is suppressed by the
"RPR-PASSTHR" alarm on page
Clear the MAX-STATIONS Alarm
Remove the extra stations from the ring to clear this alarm in all other stations and to restore traffic in
Step 1
the ring. For procedures to add or remove IEEE 802.17b-based RPR stations, refer to the
Cisco ONS 15454 and Cisco ONS 15454 SDH Ethernet Card Software Feature and Configuration
Guide.
If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/techsupport
Step 2
for more information or call Cisco TAC 1 800 553-2447 to report a Service-Affecting (SA) problem.
2.7.271 MEA (AIP)
If the Mismatch of Equipment Attributes (MEA) alarm is reported against the AIP, the fuse in the AIP
board blew or is missing. The MEA alarm also occurs when an old AIP board with a 2-A fuse is installed
in a newer ANSI 10-Gbps-compatible shelf assembly (15454-SA-ANSI or 15454-SA-HD).
Clear the MEA (AIP) Alarm
Complete the
Step 1
Step 2 If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/techsupport
for more information or call Cisco TAC 1 800 553-2447 in order to report a Service-Affecting (SA)
problem.
2.7.272 MEA (BIC)
The Missing Equipment Attributes alarm for the backplane interface connector (BIC) indicates a
compatibility issue in using high-density DS-3 cards with universal backplane interface connectors
(UBIC) and an older shelf backplane. The backplane on the high-density shelf assembly, 15454-SA-HD,
is compatible with the UBIC with horizontal connectors (UBIC-H) and UBIC with vertical connectors
(UBIC-V) that the high-density EC-1, DS-1, and DS-3 electrical connections require. The MEA alarm
is raised if you attempt to install a high-density card in Slot 4, 5, 6, 12, 13, or 14 in a shelf assembly with
an older, incompatible backplane. The card is not usable in this case. It is also raised if you attempt to
use an older BIC (also known as electrical interface assemblies [EIAs]) with the newer shelf assembly.
November 2009
Default Severity: Critical (CR), Service-Affecting (SA)
SONET Logical Object: AIP
"Replace the Alarm Interface Panel" procedure on page
Default Severity: Critical (CR), Service-Affecting (SA)
SONET Logical Object: BIC
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Cisco ONS 15454 Troubleshooting Guide, R8.5
2.7.271 MEA (AIP)
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