All MIBs › CTRON-DHCP-MIB › ctDhcpNaks
ctDhcpNaks
Module: CTRON-DHCP-MIB
OID (symbolic): CTRON-DHCP-MIB::ctDhcpNaks
OID (numeric): 1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.2.1.9
Node type: OBJECT-TYPE
Type: Counter
Access: read-only
Description: This value is the number of nak messages sent by the DHCP server since the last reset.
What is ctDhcpNaks?
ctDhcpNaks is a read-only counter of the number of DHCPNAK messages sent by the DHCP server since its last reset, which the server sends to reject a client's lease request. An admin watches this because a rising count indicates clients are being refused leases, for example because they're requesting an address the server considers invalid or already assigned elsewhere. For example, a spike in ctDhcpNaks after a subnet renumbering would suggest clients are still requesting addresses from the old, now-invalid range.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.2.1.9 snmpwalk -v2c -c public <target> CTRON-DHCP-MIB::ctDhcpNaks
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.2.1.9.1 snmpget -v2c -c public <target> CTRON-DHCP-MIB::ctDhcpNaks.1
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OID Breakdown
Upper-level ancestors (15 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 |
| 1.3.6.1.4.1.52 | cabletron | Cabletron-MIB |
| 1.3.6.1.4.1.52.4 | mibs | CT-PRIORITY-QUEUING |
| 1.3.6.1.4.1.52.4.2 | ctronExp | CT-PRIORITY-QUEUING |
| 1.3.6.1.4.1.52.4.2.2 | ctronRouterExp | ROUTER-OIDS |
| 1.3.6.1.4.1.52.4.2.2.2 | nwRouter | ROUTER-OIDS |
| 1.3.6.1.4.1.52.4.2.2.2.3 | nwRtrProtoSuites | ROUTER-OIDS |
| 1.3.6.1.4.1.52.4.2.2.2.3.1 | nwIpRouter | CTRON-IP-ROUTER-MIB |
| 1.3.6.1.4.1.52.4.2.2.2.3.1.2 | nwIpComponents | CTRON-IP-ROUTER-MIB |
| 1.3.6.1.4.1.52.4.2.2.2.3.1.2.12 | nwIpClientServices | CTRON-IP-ROUTER-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.2 | ctDhcp | CTRON-DHCP-MIB |
| 1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.2.1 | ctDhcpServerStats | CTRON-DHCP-MIB |
| 1.3.6.1.4.1.52.4.2.2.2.3.1.2.12.2.1.9 | ctDhcpNaks | CTRON-DHCP-MIB |