All MIBs › Nortel-Magellan-Passport-AtmBaseMIB › lpEngArcCqcOvCdvReduction
lpEngArcCqcOvCdvReduction
Module: Nortel-Magellan-Passport-AtmBaseMIB
OID (symbolic): Nortel-Magellan-Passport-AtmBaseMIB::lpEngArcCqcOvCdvReduction
OID (numeric): 1.3.6.1.4.1.562.2.4.1.12.23.5.3.2.10.1.3
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-write
Description: This attribute specifies the reduction of the maximum Cell Delay Variation (CDV) of shaped transmit traffic.
When the value of this attribute is set to disabled, the CDV value can be determined by the following equation:
CDV <= 2/ASR + 1/LS
where ASR is the Actual Shaping Rate of the connection and LS is the Link Speed of the interface.
When the value of this attribute is set to enabled, the CDV relationship changes to the following equation:
CDV <= 1/ASR + 1/LS
As can be noted from the equations above, setting this attribute to enabled can reduce the CDV significantly. CDV reduction may be used to conform to policers which have strict Cell Delay Variance Tolerance (CDVT). However using this function reduces the transmit bandwidth utilization of the following cards: 3pDS3Atm, 3pOC3Atm, 2pJ6MAtm.
When the value is cardDependent, CDV reduction is disabled for cardtypes 3pDS3Atm, 3pOC3Atm, 2pJ6MAtm, 4pDS1Aal1, 4pE1Aal1 and enabled for all other cards.
What is lpEngArcCqcOvCdvReduction?
Sets whether the stricter Cell Delay Variation bound (CDV <= 1/ASR + 1/LS instead of 2/ASR + 1/LS) is applied to shaped transmit traffic on this CQC-based FP: disabled, enabled, or cardDependent (the default) which auto-disables it on 3pDS3Atm/3pOC3Atm/2pJ6MAtm/4pDS1Aal1/4pE1Aal1 cards and enables it elsewhere. Enabling it trades some transmit bandwidth utilization for tighter CDV compliance with downstream policers.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.562.2.4.1.12.23.5.3.2.10.1.3 snmpwalk -v2c -c public <target> Nortel-Magellan-Passport-AtmBaseMIB::lpEngArcCqcOvCdvReduction
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.562.2.4.1.12.23.5.3.2.10.1.3.1 snmpget -v2c -c public <target> Nortel-Magellan-Passport-AtmBaseMIB::lpEngArcCqcOvCdvReduction.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.562.2.4.1.12.23.5.3.2.10.1.3.1 i <value>
Start monitoring Nortel Magellan Passport ATM WAN switch (base ATM interface) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the Nortel-Magellan-Passport-AtmBaseMIB::lpEngArcCqcOvCdvReduction OID value, configure state conditions and alerts, and monitor any Nortel Magellan Passport ATM WAN switch (base ATM interface) 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 | CPM-NORTEL-MIB |
| 1.3.6.1.4.1.562.2 | magellan | Nortel-Magellan-Passport-UsefulDefinitionsMIB |
| 1.3.6.1.4.1.562.2.4 | passport | Nortel-Magellan-Passport-UsefulDefinitionsMIB |
| 1.3.6.1.4.1.562.2.4.1 | components | Nortel-Magellan-Passport-UsefulDefinitionsMIB |
| 1.3.6.1.4.1.562.2.4.1.12 | lp | Nortel-Magellan-Passport-LogicalProcessorMIB |
| 1.3.6.1.4.1.562.2.4.1.12.23 | lpEng | Nortel-Magellan-Passport-LogicalProcessorMIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.562.2.4.1.12.23.5 | lpEngArc | Nortel-Magellan-Passport-AtmBaseMIB |
| 1.3.6.1.4.1.562.2.4.1.12.23.5.3 | lpEngArcCqc | Nortel-Magellan-Passport-AtmBaseMIB |
| 1.3.6.1.4.1.562.2.4.1.12.23.5.3.2 | lpEngArcCqcOv | Nortel-Magellan-Passport-AtmBaseMIB |
| 1.3.6.1.4.1.562.2.4.1.12.23.5.3.2.10 | lpEngArcCqcOvProvTable | Nortel-Magellan-Passport-AtmBaseMIB |
| 1.3.6.1.4.1.562.2.4.1.12.23.5.3.2.10.1 | lpEngArcCqcOvProvEntry | Nortel-Magellan-Passport-AtmBaseMIB |
| 1.3.6.1.4.1.562.2.4.1.12.23.5.3.2.10.1.3 | lpEngArcCqcOvCdvReduction | Nortel-Magellan-Passport-AtmBaseMIB |