All MIBs › CISCO-VISM-CONN-STAT-MIB › vismChanAal5InvCpiPdus
vismChanAal5InvCpiPdus
Module: CISCO-VISM-CONN-STAT-MIB
OID (symbolic): CISCO-VISM-CONN-STAT-MIB::vismChanAal5InvCpiPdus
OID (numeric): 1.3.6.1.4.1.351.110.5.5.3.3.1.1.21
Node type: OBJECT-TYPE
Type: Counter32
Access: read-only
Description: This object counts the number of AAL5 PDUs dropped in the egress direction due to invalid CPI(Common Part Indicator) field in the AAL5 PDU trailer. This is applicable only to the PVCs configured as AAL5 PVCs (VoIP(Voice Over IP) PVCs or CCS(Common Channel Signaling) PVCs in the case of VoAAL2 application.
What is vismChanAal5InvCpiPdus?
This Counter32 counts AAL5 PDUs dropped in the egress direction due to an invalid CPI (Common Part Indicator) field in the AAL5 PDU trailer, applicable only to PVCs configured as AAL5, whether VoIP PVCs or CCS PVCs in a VoAAL2 application. This error indicates trailer-level corruption specifically affecting AAL5-framed traffic, which on a CCS PVC could disrupt signaling protocol messages carried over that PVC. An engineer troubleshooting a signaling failure on a CCS PVC configured as AAL5 would check this counter to see if trailer corruption is dropping signaling PDUs.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.351.110.5.5.3.3.1.1.21 snmpwalk -v2c -c public <target> CISCO-VISM-CONN-STAT-MIB::vismChanAal5InvCpiPdus
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.351.110.5.5.3.3.1.1.21.1 snmpget -v2c -c public <target> CISCO-VISM-CONN-STAT-MIB::vismChanAal5InvCpiPdus.1
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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 |
| 1.3.6.1.4.1.351 | stratacom | CISCOWAN-SMI |
| 1.3.6.1.4.1.351.110 | basis | BASIS-MIB |
| 1.3.6.1.4.1.351.110.5 | basisServices | BASIS-MIB |
| 1.3.6.1.4.1.351.110.5.5 | voice | BASIS-MIB |
| 1.3.6.1.4.1.351.110.5.5.3 | vismChanGrp | BASIS-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.351.110.5.5.3.3 | vismChanCntGrp | CISCO-VISM-CONN-STAT-MIB |
| 1.3.6.1.4.1.351.110.5.5.3.3.1 | vismChanCntGrpTable | CISCO-VISM-CONN-STAT-MIB |
| 1.3.6.1.4.1.351.110.5.5.3.3.1.1 | vismChanCntGrpEntry | CISCO-VISM-CONN-STAT-MIB |
| 1.3.6.1.4.1.351.110.5.5.3.3.1.1.21 | vismChanAal5InvCpiPdus | CISCO-VISM-CONN-STAT-MIB |