All MIBs › CISCO-IETF-DHCP-SERVER-EXT-MIB › cDhcpv4ServerSubnetFreeAddressLowEnable
cDhcpv4ServerSubnetFreeAddressLowEnable
Module: CISCO-IETF-DHCP-SERVER-EXT-MIB
OID (symbolic): CISCO-IETF-DHCP-SERVER-EXT-MIB::cDhcpv4ServerSubnetFreeAddressLowEnable
OID (numeric): 1.3.6.1.4.1.9.10.122.1.6.4
Node type: OBJECT-TYPE
Type: TruthValue
Access: read-write
Description: This object specifies if the DHCP module should generate 'cDhcpv4ServerSubnetFreeAddressLow' notifications.
If value of this object is 'true', then the notification is generated when the number of available IPv4 addresses for a particular subnet has fallen below the value of cDhcpv4ServerSubnetFreeAddrLowThreshold for that subnet.
If it is 'false', the notification is not generated.
What is cDhcpv4ServerSubnetFreeAddressLowEnable?
This read-write setting controls whether the DHCP server sends a notification when a subnet's pool of available IPv4 addresses drops below a low-water-mark threshold, helping alert administrators to impending address exhaustion.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.9.10.122.1.6.4 snmpwalk -v2c -c public <target> CISCO-IETF-DHCP-SERVER-EXT-MIB::cDhcpv4ServerSubnetFreeAddressLowEnable
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.9.10.122.1.6.4.1 snmpget -v2c -c public <target> CISCO-IETF-DHCP-SERVER-EXT-MIB::cDhcpv4ServerSubnetFreeAddressLowEnable.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.9.10.122.1.6.4.1 s <value>
SNMPv3 example:
snmpget -v3 -l authPriv -u snmpv3-user -a SHA -A "AuthPassword1" -x AES -X "PrivPassword1" <target> cDhcpv4ServerSubnetFreeAddressLowEnable.1
Start monitoring Cisco IOS router/switch configured as a DHCP server with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the CISCO-IETF-DHCP-SERVER-EXT-MIB::cDhcpv4ServerSubnetFreeAddressLowEnable OID value, configure state conditions and alerts, and monitor any Cisco IOS router/switch configured as a DHCP 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 |
| 1.3.6.1.4.1.9 | cisco | CAT2600-MIB |
| 1.3.6.1.4.1.9.10 | ciscoExperiment | CISCO-SMI |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.9.10.122 | ciscoIetfDhcpSrvExtMIB | CISCO-IETF-DHCP-SERVER-EXT-MIB |
| 1.3.6.1.4.1.9.10.122.1 | ciscoIetfDhcpv4SrvExtMIBObjects | CISCO-IETF-DHCP-SERVER-EXT-MIB |
| 1.3.6.1.4.1.9.10.122.1.6 | cDhcpv4CfgObjects | CISCO-IETF-DHCP-SERVER-EXT-MIB |
| 1.3.6.1.4.1.9.10.122.1.6.4 | cDhcpv4ServerSubnetFreeAddressLowEnable | CISCO-IETF-DHCP-SERVER-EXT-MIB |