All MIBs › USR-TCP-MIB › usrTcpMaxConn
usrTcpMaxConn
Module: USR-TCP-MIB
OID (symbolic): USR-TCP-MIB::usrTcpMaxConn
OID (numeric): 1.3.6.1.4.1.429.4.45.3
Node type: OBJECT-TYPE
Type: Integer32
Access: read-write
Description: The limit on the total number of TCP connections the entity can support. In entities where the maximum number of connections is dynamic, this object should contain the value -1. This a read-write version of the tcpMaxConn object in rfc1213.
What is usrTcpMaxConn?
This read-write value sets the maximum number of simultaneous TCP connections the device will support, with -1 meaning the limit is dynamic. Admins lower this value to cap resource usage on a constrained device, or raise it toward the 4096 ceiling on a device expected to serve many concurrent TCP sessions. For example, setting usrTcpMaxConn to 512 caps the device at 512 concurrent TCP connections, causing further connection attempts to be refused until existing ones close.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.429.4.45.3 snmpwalk -v2c -c public <target> USR-TCP-MIB::usrTcpMaxConn
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.429.4.45.3.1 snmpget -v2c -c public <target> USR-TCP-MIB::usrTcpMaxConn.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.429.4.45.3.1 i <value>
SNMPv3 example:
snmpget -v3 -l authPriv -u snmpv3-user -a SHA -A "AuthPassword1" -x AES -X "PrivPassword1" <target> usrTcpMaxConn.1
Start monitoring CommWorks (3Com/U.S. Robotics) remote-access platforms (TCP tuning/out-of-order-segment-drop status) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the USR-TCP-MIB::usrTcpMaxConn OID value, configure state conditions and alerts, and monitor any CommWorks (3Com/U.S. Robotics) remote-access platforms (TCP tuning/out-of-order-segment-drop status) from a single console.
OID Breakdown
Upper-level ancestors (9 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 |
| 1.3.6.1.4.1.429 | usr | ANIC-MIB |
| 1.3.6.1.4.1.429.4 | common | HDR2-MIB |
| 1.3.6.1.4.1.429.4.45 | usrTcp | USR-DEFINITIONS-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.429.4.45.3 | usrTcpMaxConn | USR-TCP-MIB |