All MIBs › ACC-DHCP › accDhcpSrvNacks
accDhcpSrvNacks
Module: ACC-DHCP
OID (symbolic): ACC-DHCP::accDhcpSrvNacks
OID (numeric): 1.3.6.1.4.1.5.1.1.55.1.1.19
Node type: OBJECT-TYPE
Type: Counter
Access: read-only
Description: The number of negative acknowledge packets sent by this DHCP server.
What is accDhcpSrvNacks?
This OID counts negative ACK (NACK) responses sent when the DHCP server cannot fulfill a client request (e.g., requested address is taken or lease has expired). Rising NACK counts indicate clients are having trouble getting leases and may point to pool exhaustion or clients requesting expired addresses. For example, if NACKs climb to 47 over an hour when they're normally near zero, it could mean someone misconfigured a server with a static IP that overlaps the DHCP pool.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.5.1.1.55.1.1.19 snmpwalk -v2c -c public <target> ACC-DHCP::accDhcpSrvNacks
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.5.1.1.55.1.1.19.1 snmpget -v2c -c public <target> ACC-DHCP::accDhcpSrvNacks.1
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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 |
| 1.3.6.1.4.1.5 | acc | ACC-MIB |
| 1.3.6.1.4.1.5.1 | accSBAR | ACC-MIB |
| 1.3.6.1.4.1.5.1.1 | accBRG | ACC-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.5.1.1.55 | accDHCP | ACC-DHCP |
| 1.3.6.1.4.1.5.1.1.55.1 | accDHCPSrvTable | ACC-DHCP |
| 1.3.6.1.4.1.5.1.1.55.1.1 | accDHCPSrvEntry | ACC-DHCP |
| 1.3.6.1.4.1.5.1.1.55.1.1.19 | accDhcpSrvNacks | ACC-DHCP |