All MIBs › Nortel-Magellan-Passport-TdmaIwfMIB › tdmaCsV42BisP1MaximumCodewords
tdmaCsV42BisP1MaximumCodewords
Module: Nortel-Magellan-Passport-TdmaIwfMIB
OID (symbolic): Nortel-Magellan-Passport-TdmaIwfMIB::tdmaCsV42BisP1MaximumCodewords
OID (numeric): 1.3.6.1.4.1.562.2.4.1.135.8.10.1.2
Node type: OBJECT-TYPE
Type: Unsigned32
Access: read-write
Description: This attribute specifies the maximum number of V.42bis codewords the IWF supports. A codeword is a binary number that represents a string of characters in compressed form. V.42bis keeps a dictionary of codewords for each compression direction. Changes to this attribute impact the compression ratio for the encoder (component TdmaBc V42Bis attribute compRatioEncoder). Changes also impact the amount of memory used (more memory is used when increasing the attribute). The gain in performance obtained from the selection of a larger dictionary may be offset by the larger codeword size needed, and for certain types of data, better performance may be obtained by using a smaller dictionary. Changes to this attribute do not affect existing calls.
What is tdmaCsV42BisP1MaximumCodewords?
Provisions the maximum number of V.42bis codewords (512-4096) the IWF supports in its compression dictionary. Raising it can improve compression ratio (visible via the sibling compRatioEncoder statistic) but uses more memory and a larger per-codeword size, which for some data can actually reduce effective performance. Changes here don't affect calls already in progress.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.562.2.4.1.135.8.10.1.2 snmpwalk -v2c -c public <target> Nortel-Magellan-Passport-TdmaIwfMIB::tdmaCsV42BisP1MaximumCodewords
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.562.2.4.1.135.8.10.1.2.1 snmpget -v2c -c public <target> Nortel-Magellan-Passport-TdmaIwfMIB::tdmaCsV42BisP1MaximumCodewords.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.562.2.4.1.135.8.10.1.2.1 i <value>
Start monitoring Nortel Magellan Passport wide-area switch (mobile carrier TDMA interworking) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the Nortel-Magellan-Passport-TdmaIwfMIB::tdmaCsV42BisP1MaximumCodewords OID value, configure state conditions and alerts, and monitor any Nortel Magellan Passport wide-area switch (mobile carrier TDMA interworking) from a single console.
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 |
| 1.3.6.1.4.1.562 | 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 |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.562.2.4.1.135 | tdmaCs | Nortel-Magellan-Passport-TdmaIwfMIB |
| 1.3.6.1.4.1.562.2.4.1.135.8 | tdmaCsV42Bis | Nortel-Magellan-Passport-TdmaIwfMIB |
| 1.3.6.1.4.1.562.2.4.1.135.8.10 | tdmaCsV42BisProvTable | Nortel-Magellan-Passport-TdmaIwfMIB |
| 1.3.6.1.4.1.562.2.4.1.135.8.10.1 | tdmaCsV42BisProvEntry | Nortel-Magellan-Passport-TdmaIwfMIB |
| 1.3.6.1.4.1.562.2.4.1.135.8.10.1.2 | tdmaCsV42BisP1MaximumCodewords | Nortel-Magellan-Passport-TdmaIwfMIB |