All MIBs › Fore-Switch-MIB › vcShmem3IntentionalLostCells
vcShmem3IntentionalLostCells
Module: Fore-Switch-MIB
OID (symbolic): Fore-Switch-MIB::vcShmem3IntentionalLostCells
OID (numeric): 1.3.6.1.4.1.326.2.2.1.5.8.1.1.4
Node type: OBJECT-TYPE
Type: Counter32
Access: read-only
Description: The number of cells on this channel that were dropped due to EPD (Early Packet Discard) or PPD (Partial Packet Discard).
What is vcShmem3IntentionalLostCells?
This counter tracks the number of ATM cells intentionally dropped on a channel due to Early Packet Discard (EPD) or Partial Packet Discard (PPD) congestion avoidance mechanisms. These are deliberate drops to prevent buffer overflow and maintain network performance during congestion. An operator monitors this to understand how often the switch is discarding traffic to prevent worse network degradation.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.326.2.2.1.5.8.1.1.4 snmpwalk -v2c -c public <target> Fore-Switch-MIB::vcShmem3IntentionalLostCells
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.326.2.2.1.5.8.1.1.4.1 snmpget -v2c -c public <target> Fore-Switch-MIB::vcShmem3IntentionalLostCells.1
Start monitoring Fore Systems (later Marconi) ForeRunner ATM switch (board/port/VPI-VCI inventory) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the Fore-Switch-MIB::vcShmem3IntentionalLostCells OID value, configure state conditions and alerts, and monitor any Fore Systems (later Marconi) ForeRunner ATM switch (board/port/VPI-VCI inventory) 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 |
| 1.3.6.1.4.1.326 | fore | COMMON-GOLF-MIB |
| 1.3.6.1.4.1.326.2 | systems | COMMON-GOLF-MIB |
| 1.3.6.1.4.1.326.2.2 | atmSwitch | Fore-Common-MIB |
| 1.3.6.1.4.1.326.2.2.1 | hardware | Fore-Common-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.326.2.2.1.5 | shmem | Fore-Switch-MIB |
| 1.3.6.1.4.1.326.2.2.1.5.8 | connShmem3Group | Fore-Switch-MIB |
| 1.3.6.1.4.1.326.2.2.1.5.8.1 | channelShmem3Table | Fore-Switch-MIB |
| 1.3.6.1.4.1.326.2.2.1.5.8.1.1 | channelShmem3Entry | Fore-Switch-MIB |
| 1.3.6.1.4.1.326.2.2.1.5.8.1.1.4 | vcShmem3IntentionalLostCells | Fore-Switch-MIB |