All MIBs › CISCO-WAN-AXIPOP-MIB › x21LineAlarmState
x21LineAlarmState
Module: CISCO-WAN-AXIPOP-MIB
OID (symbolic): CISCO-WAN-AXIPOP-MIB::x21LineAlarmState
OID (numeric): 1.3.6.1.4.1.351.110.4.5.3.1.1.2
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-only
Description: This variable is a bitmap of the X21 Line ALarms
on the FRSM-HS1. A value of zero indicates no alarms.
Itemized below are the individual bits:
BitPosition Alarm
----------- -----
0 C/I signal is OFF (also used to indicate LOS)
1 Clock rate mismatch (used in DTE mode)
2 Internal Loopback (diagnostic loopback)
3 HSSI Local LoopA (line is in loopback)
4 HSSI Local LoopB (line is in loopback)
5 Remote Loopback (line is transmitting loopcodes)
6 For V35 DTE mode, DCD and CTS both are inactive
7 For V35 DCE mode, RTS is inactive
8 No cable attached to V35 backcard
9 Wrong cable attached to V35 backcard
If all the bit-states are 0s:
- line is not in alarm, or
- line not in loopback, or
- line is transmitting any loopback codes.
What is x21LineAlarmState?
This read-only object, ranging from 0 to 1023, is a bitmap of X.21 line alarms on the FRSM-HS1, where a value of zero means no alarms and individual bits indicate conditions such as C/I signal off (bit 0, also loss of signal), clock rate mismatch (bit 1), internal loopback (bit 2), and HSSI local loopback A or B (bits 3 and 4). An administrator decodes this bitmap to see, at a glance, every active alarm condition on the line without polling separate objects. For example, a value with only bit 2 set would tell an engineer the line is simply in a diagnostic loopback rather than experiencing a real fault.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.351.110.4.5.3.1.1.2 snmpwalk -v2c -c public <target> CISCO-WAN-AXIPOP-MIB::x21LineAlarmState
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.351.110.4.5.3.1.1.2.1 snmpget -v2c -c public <target> CISCO-WAN-AXIPOP-MIB::x21LineAlarmState.1
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OID Breakdown
Upper-level ancestors (10 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 |
| 1.3.6.1.4.1.351 | stratacom | CISCOWAN-SMI |
| 1.3.6.1.4.1.351.110 | basis | BASIS-MIB |
| 1.3.6.1.4.1.351.110.4 | basisLines | BASIS-MIB |
| 1.3.6.1.4.1.351.110.4.5 | x21 | BASIS-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.351.110.4.5.3 | x21AlmGrp | CISCO-WAN-AXIPOP-MIB |
| 1.3.6.1.4.1.351.110.4.5.3.1 | x21AlmGrpTable | CISCO-WAN-AXIPOP-MIB |
| 1.3.6.1.4.1.351.110.4.5.3.1.1 | x21AlmGrpEntry | CISCO-WAN-AXIPOP-MIB |
| 1.3.6.1.4.1.351.110.4.5.3.1.1.2 | x21LineAlarmState | CISCO-WAN-AXIPOP-MIB |