All MIBs › CNTAU-MIB › cntFddiMACTvxExpires
cntFddiMACTvxExpires
Module: CNTAU-MIB
OID (symbolic): CNTAU-MIB::cntFddiMACTvxExpires
OID (numeric): 1.3.6.1.4.1.333.1.10.2.2.2.1.21
Node type: OBJECT-TYPE
Type: Counter
Access: read-only
Description: A count of the times that TVX expired.
What is cntFddiMACTvxExpires?
This counter records how many times the Valid Transmission Timer (TVX) has expired on this MAC. An administrator treats a rising count as a sign of ring instability, since TVX expirations typically occur when the station hasn't seen a valid frame or token within the expected window. For example, frequent TVX expirations on one MAC while neighboring stations show none would point the admin toward a link or upstream-neighbor problem specific to that segment.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.333.1.10.2.2.2.1.21 snmpwalk -v2c -c public <target> CNTAU-MIB::cntFddiMACTvxExpires
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.333.1.10.2.2.2.1.21.1 snmpget -v2c -c public <target> CNTAU-MIB::cntFddiMACTvxExpires.1
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OID Breakdown
Upper-level ancestors (7 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 |
| 1.3.6.1.4.1.333 | cnt | CNT2-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.333.1 | cntau | CNTAU-MIB |
| 1.3.6.1.4.1.333.1.10 | cnttransmission | CNTAU-MIB |
| 1.3.6.1.4.1.333.1.10.2 | cntfddi | CNTAU-MIB |
| 1.3.6.1.4.1.333.1.10.2.2 | cntFddiMAC | CNTAU-MIB |
| 1.3.6.1.4.1.333.1.10.2.2.2 | cntFddiMACTable | CNTAU-MIB |
| 1.3.6.1.4.1.333.1.10.2.2.2.1 | cntFddiMACEntry | CNTAU-MIB |
| 1.3.6.1.4.1.333.1.10.2.2.2.1.21 | cntFddiMACTvxExpires | CNTAU-MIB |