All MIBs › HM2-INDUSTRIAL-PROTOCOLS-MIB › hm2ModbusTcpServerMaxSessionsCount
hm2ModbusTcpServerMaxSessionsCount
Module: HM2-INDUSTRIAL-PROTOCOLS-MIB
OID (symbolic): HM2-INDUSTRIAL-PROTOCOLS-MIB::hm2ModbusTcpServerMaxSessionsCount
OID (numeric): 1.3.6.1.4.1.248.11.101.1.4.1.4
Node type: OBJECT-TYPE
Type: Integer32
Access: read-write
Description: Maximum number of concurrent sessions allowed by the Modbus TCP server.
What is hm2ModbusTcpServerMaxSessionsCount?
Caps concurrent Modbus TCP client sessions to a value from 1 to 5, defaulting to 5 — a much tighter ceiling than the 15-session limits on the MMS servers, reflecting Modbus's typically simpler polling model.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.248.11.101.1.4.1.4 snmpwalk -v2c -c public <target> HM2-INDUSTRIAL-PROTOCOLS-MIB::hm2ModbusTcpServerMaxSessionsCount
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.248.11.101.1.4.1.4.1 snmpget -v2c -c public <target> HM2-INDUSTRIAL-PROTOCOLS-MIB::hm2ModbusTcpServerMaxSessionsCount.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.248.11.101.1.4.1.4.1 i <value>
SNMPv3 example:
snmpget -v3 -l authPriv -u snmpv3-user -a SHA -A "AuthPassword1" -x AES -X "PrivPassword1" <target> hm2ModbusTcpServerMaxSessionsCount.1
Start monitoring Hirschmann HiOS industrial Ethernet switch (IEC 61850 MMS server) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the HM2-INDUSTRIAL-PROTOCOLS-MIB::hm2ModbusTcpServerMaxSessionsCount OID value, configure state conditions and alerts, and monitor any Hirschmann HiOS industrial Ethernet switch (IEC 61850 MMS server) from a single console.
OID Breakdown
Upper-level ancestors (8 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 |
| 1.3.6.1.4.1.248 | hirschmann | HM2-TC-MIB |
| 1.3.6.1.4.1.248.11 | hm2ConfigurationMibs | HM2-TC-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.248.11.101 | hm2IndustrialProtocolsMib | HM2-INDUSTRIAL-PROTOCOLS-MIB |
| 1.3.6.1.4.1.248.11.101.1 | hm2IndustrialProtocolsMibObjects | HM2-INDUSTRIAL-PROTOCOLS-MIB |
| 1.3.6.1.4.1.248.11.101.1.4 | hm2ModbusGroup | HM2-INDUSTRIAL-PROTOCOLS-MIB |
| 1.3.6.1.4.1.248.11.101.1.4.1 | hm2ModbusConfigGroup | HM2-INDUSTRIAL-PROTOCOLS-MIB |
| 1.3.6.1.4.1.248.11.101.1.4.1.4 | hm2ModbusTcpServerMaxSessionsCount | HM2-INDUSTRIAL-PROTOCOLS-MIB |