All MIBs › Nortel-MsCarrier-MscPassport-AtmBearerServiceMIB › mscAtmIfVpcNrpTxAal5PartialPacketDiscard
mscAtmIfVpcNrpTxAal5PartialPacketDiscard
Module: Nortel-MsCarrier-MscPassport-AtmBearerServiceMIB
OID (symbolic): Nortel-MsCarrier-MscPassport-AtmBearerServiceMIB::mscAtmIfVpcNrpTxAal5PartialPacketDiscard
OID (numeric): 1.3.6.1.4.1.562.36.2.1.114.4.4.100.1.31
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-write
Description: This attribute is obsolete in P4.2 and has been migrated under Vcd (Vpd) component.
This attribute specifies whether the AAL5 Partial Packet Discard (PPD) feature has been enabled or disabled on the Nrp in the transmit direction. This feature allows the NRP to discard the remainder of a cell-forwarded AAL5 frame if a cell of this frame has been discarded due to congestion. This increases the 'goodput' of the link, since cells which are only going to be discarded by the AAL5 reassembly are not transmitted.
When this attribute is set to enabled, the PPD feature is applied in the transmit direction. It should only be enabled for connections whose end points are performing AAL5 segmentation and reassembly. When this attribute is set to disabled, the PPD feature is not applied to traffic for this connection in the transmit direction. Note that specifying enabled for a non-AAL5 connection will cause all traffic to be discarded once congestion is encountered.
What is mscAtmIfVpcNrpTxAal5PartialPacketDiscard?
An obsolete attribute (migrated to the Vcd/Vpd component in P4.2) that enabled AAL5 Partial Packet Discard in the transmit direction on this Vpc Nrp, letting the switch drop the rest of a congested AAL5 frame instead of wasting bandwidth on cells that reassembly will discard anyway. Per the DESCRIPTION, enabling it on a non-AAL5 connection causes all traffic to be dropped once congestion hits, so an admin on current firmware should configure PPD at the Vcd/Vpd level instead.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.562.36.2.1.114.4.4.100.1.31 snmpwalk -v2c -c public <target> Nortel-MsCarrier-MscPassport-AtmBearerServiceMIB::mscAtmIfVpcNrpTxAal5PartialPacketDiscard
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.562.36.2.1.114.4.4.100.1.31.1 snmpget -v2c -c public <target> Nortel-MsCarrier-MscPassport-AtmBearerServiceMIB::mscAtmIfVpcNrpTxAal5PartialPacketDiscard.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.562.36.2.1.114.4.4.100.1.31.1 i <value>
Start monitoring Nortel MsCarrier MscPassport ATM switch (ATM bearer service/VPC NRP) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the Nortel-MsCarrier-MscPassport-AtmBearerServiceMIB::mscAtmIfVpcNrpTxAal5PartialPacketDiscard OID value, configure state conditions and alerts, and monitor any Nortel MsCarrier MscPassport ATM switch (ATM bearer service/VPC NRP) from a single console.
OID Breakdown
Upper-level ancestors (12 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 | Nortel-Magellan-Passport-UsefulDefinitionsMIB |
| 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 |
| 1.3.6.1.4.1.562.36.2.1.114 | mscAtmIf | Nortel-MsCarrier-MscPassport-AtmCoreMIB |
| 1.3.6.1.4.1.562.36.2.1.114.4 | mscAtmIfVpc | Nortel-MsCarrier-MscPassport-AtmCoreMIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.562.36.2.1.114.4.4 | mscAtmIfVpcNrp | Nortel-MsCarrier-MscPassport-AtmBearerServiceMIB |
| 1.3.6.1.4.1.562.36.2.1.114.4.4.100 | mscAtmIfVpcNrpProvTable | Nortel-MsCarrier-MscPassport-AtmBearerServiceMIB |
| 1.3.6.1.4.1.562.36.2.1.114.4.4.100.1 | mscAtmIfVpcNrpProvEntry | Nortel-MsCarrier-MscPassport-AtmBearerServiceMIB |
| 1.3.6.1.4.1.562.36.2.1.114.4.4.100.1.31 | mscAtmIfVpcNrpTxAal5PartialPacketDiscard | Nortel-MsCarrier-MscPassport-AtmBearerServiceMIB |