All MIBs › Nortel-MsCarrier-MscPassport-ExternalTimingE1MIB › mscLpEE1RxAisAlarm
mscLpEE1RxAisAlarm
Module: Nortel-MsCarrier-MscPassport-ExternalTimingE1MIB
OID (symbolic): Nortel-MsCarrier-MscPassport-ExternalTimingE1MIB::mscLpEE1RxAisAlarm
OID (numeric): 1.3.6.1.4.1.562.36.2.1.12.29.16.1.3
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-only
Description: This attribute indicates whether an AIS (Alarm Indication Signal) alarm has been entered. The AIS Alarm state is entered when AIS defects have been observed and accumulated for 2.5 seconds +/- 0.5 second. An AIS defect is detected after having received less than 3 zeros in a 2048 bit period. If the AIS defects are intermittently occurring, the AIS defect accumulator is decremented at a rate of 1/ 10 of the incrementing rate (alarm integration ratio of 1/10), with all measurement based on a 200 ms polling cycle. The port goes into an operational state of disabled for the duration of an AIS alarm state. The AIS alarm state is cleared when AIS defects are absent for 10 seconds +/- 0.5 second.
What is mscLpEE1RxAisAlarm?
This object indicates whether an AIS (Alarm Indication Signal) alarm is currently active on this external E1 timing port, declared after AIS defects accumulate for about 2.5 seconds, and cleared after 10 seconds without AIS defects. While this alarm is active, the port's operational state is disabled. An admin seeing this alarm on(0) knows the timing port is receiving an AIS pattern, typically indicating an upstream failure being signaled downstream rather than a local fault on this port.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.562.36.2.1.12.29.16.1.3 snmpwalk -v2c -c public <target> Nortel-MsCarrier-MscPassport-ExternalTimingE1MIB::mscLpEE1RxAisAlarm
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.562.36.2.1.12.29.16.1.3.1 snmpget -v2c -c public <target> Nortel-MsCarrier-MscPassport-ExternalTimingE1MIB::mscLpEE1RxAisAlarm.1
Start monitoring Nortel MsCarrier MscPassport switch (external E1 timing reference) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the Nortel-MsCarrier-MscPassport-ExternalTimingE1MIB::mscLpEE1RxAisAlarm OID value, configure state conditions and alerts, and monitor any Nortel MsCarrier MscPassport switch (external E1 timing reference) from a single console.
OID Breakdown
Upper-level ancestors (11 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| 1.3.6.1.4.1.562 | nortel | CPM-NORTEL-MIB |
| 1.3.6.1.4.1.562.36 | msCarrier | Nortel-MsCarrier-MscPassport-UsefulDefinitionsMIB |
| 1.3.6.1.4.1.562.36.2 | mscPassport | Nortel-MsCarrier-MscPassport-UsefulDefinitionsMIB |
| 1.3.6.1.4.1.562.36.2.1 | mscComponents | Nortel-MsCarrier-MscPassport-UsefulDefinitionsMIB |
| 1.3.6.1.4.1.562.36.2.1.12 | mscLp | Nortel-MsCarrier-MscPassport-LogicalProcessorMIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.562.36.2.1.12.29 | mscLpEE1 | Nortel-MsCarrier-MscPassport-ExternalTimingE1MIB |
| 1.3.6.1.4.1.562.36.2.1.12.29.16 | mscLpEE1OperTable | Nortel-MsCarrier-MscPassport-ExternalTimingE1MIB |
| 1.3.6.1.4.1.562.36.2.1.12.29.16.1 | mscLpEE1OperEntry | Nortel-MsCarrier-MscPassport-ExternalTimingE1MIB |
| 1.3.6.1.4.1.562.36.2.1.12.29.16.1.3 | mscLpEE1RxAisAlarm | Nortel-MsCarrier-MscPassport-ExternalTimingE1MIB |