All MIBs › A10-AX-MIB › axSessionGlobalStatTCPHalfOpen
axSessionGlobalStatTCPHalfOpen
Module: A10-AX-MIB
OID (symbolic): A10-AX-MIB::axSessionGlobalStatTCPHalfOpen
OID (numeric): 1.3.6.1.4.1.22610.2.4.3.19.1.2
Node type: OBJECT-TYPE
Type: Counter
Access: read-only
Description:
The count of TCP half open.
What is axSessionGlobalStatTCPHalfOpen?
This counter tallies TCP connections in a half-open state (SYN-ACK received but not yet fully established). Engineers watch this to detect SYN flood attacks or slow-client slowdown attacks. An unexpectedly high count like 50000 would signal a potential DDoS or performance problem requiring investigation.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.22610.2.4.3.19.1.2 snmpwalk -v2c -c public <target> A10-AX-MIB::axSessionGlobalStatTCPHalfOpen
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.22610.2.4.3.19.1.2.1 snmpget -v2c -c public <target> A10-AX-MIB::axSessionGlobalStatTCPHalfOpen.1
OID Breakdown
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | BIANCA-BRICK-PPP-MIB |
| 1.3.6 | dod | BIANCA-BRICK-PPP-MIB |
| 1.3.6.1 | internet | BIANCA-BRICK-PPP-MIB |
| 1.3.6.1.4 | private | BIANCA-BRICK-PPP-MIB |
| 1.3.6.1.4.1 | enterprises | ANIROOT-MIB |
| 1.3.6.1.4.1.22610 | a10 | A10-COMMON-MIB |
| 1.3.6.1.4.1.22610.2 | a10Mgmt | A10-COMMON-MIB |
| 1.3.6.1.4.1.22610.2.4 | axMgmt | A10-AX-MIB |
| 1.3.6.1.4.1.22610.2.4.3 | axApp | A10-AX-MIB |
| 1.3.6.1.4.1.22610.2.4.3.19 | axSessionStats | A10-AX-MIB |
| 1.3.6.1.4.1.22610.2.4.3.19.1 | axSessionStatsGlobal | A10-AX-MIB |
| 1.3.6.1.4.1.22610.2.4.3.19.1.2 | axSessionGlobalStatTCPHalfOpen | A10-AX-MIB |