All MIBs › Nortel-Magellan-Passport-TdmaIwfMIB › tdmaCsV42T401AckTimer
tdmaCsV42T401AckTimer
Module: Nortel-Magellan-Passport-TdmaIwfMIB
OID (symbolic): Nortel-Magellan-Passport-TdmaIwfMIB::tdmaCsV42T401AckTimer
OID (numeric): 1.3.6.1.4.1.562.2.4.1.135.7.10.1.2
Node type: OBJECT-TYPE
Type: FixedPoint2
Access: read-write
Description: This attribute specifies the maximum amount of time that the IWF waits for an acknowledgment before retransmitting a frame. Since information about the T401 timer is not carried in the Exchange Identification (XID) negotiations at call setup time, both sides operate with different timer values. The value for T401 depends on many factors, such as propagation delay or frame processing time. A frame is retransmitted up to N400 times if the timer T401 expires before an acknowledgment for a frame is actually received. The performance of the data link layer can be impacted by the value of this timer as retransmissions of frames occur on expiry of timer T401. Changes to this attribute do not affect existing calls.
What is tdmaCsV42T401AckTimer?
Provisions the T401 acknowledgment timer (50-900, FixedPoint2): how long the IWF waits for an ACK before retransmitting a V.42 frame; a frame is resent up to N400 times if it expires. Since T401 isn't negotiated between peers, both ends can run different values, and this timer directly affects data-link retransmission behavior and thus throughput. Changes here don't affect calls already in progress.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.562.2.4.1.135.7.10.1.2 snmpwalk -v2c -c public <target> Nortel-Magellan-Passport-TdmaIwfMIB::tdmaCsV42T401AckTimer
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.562.2.4.1.135.7.10.1.2.1 snmpget -v2c -c public <target> Nortel-Magellan-Passport-TdmaIwfMIB::tdmaCsV42T401AckTimer.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.562.2.4.1.135.7.10.1.2.1 s <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::tdmaCsV42T401AckTimer 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 |
| 1.3.6.1.4.1.562.2.4.1.135.7 | tdmaCsV42 | Nortel-Magellan-Passport-TdmaIwfMIB |
| 1.3.6.1.4.1.562.2.4.1.135.7.10 | tdmaCsV42ProvTable | Nortel-Magellan-Passport-TdmaIwfMIB |
| 1.3.6.1.4.1.562.2.4.1.135.7.10.1 | tdmaCsV42ProvEntry | Nortel-Magellan-Passport-TdmaIwfMIB |
| 1.3.6.1.4.1.562.2.4.1.135.7.10.1.2 | tdmaCsV42T401AckTimer | Nortel-Magellan-Passport-TdmaIwfMIB |