All MIBs › CISCO-IETF-DHCP-SERVER-EXT-MIB › cDhcpv4ServerSubnetFreeAddressHigh
cDhcpv4ServerSubnetFreeAddressHigh
Module: CISCO-IETF-DHCP-SERVER-EXT-MIB
OID (symbolic): CISCO-IETF-DHCP-SERVER-EXT-MIB::cDhcpv4ServerSubnetFreeAddressHigh
OID (numeric): 1.3.6.1.4.1.9.10.122.0.2.0.3
Node type: NOTIFICATION-TYPE
Description: This notification indicates that the number of available IPv4 addresses for a particular subnet has risen above the corresponding value of cDhcpv4ServerSubnetFreeAddrHighThreshold for that shared network.
Examples
Send this trap to an SNMP manager — replace <manager> with the IP or hostname of your monitoring server (SNMPv2c):
snmptrap -v2c -c public <manager> '' CISCO-IETF-DHCP-SERVER-EXT-MIB::cDhcpv4ServerSubnetFreeAddressHigh snmptrap -v2c -c public <manager> '' 1.3.6.1.4.1.9.10.122.0.2.0.3
Listen for incoming traps on the manager host (-f keeps it in the foreground, -Lo prints to stdout — useful for testing):
snmptrapd -f -Lo -c /dev/null authCommunity log public
Example snmptrapd log entry:
zoo11-linux.zoo [UDP: [192.168.30.111]:52567->[192.168.30.10]:162]: DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (252439895) 29 days, 5:13:18.95 SNMPv2-MIB::snmpTrapOID.0 = OID: CISCO-IETF-DHCP-SERVER-EXT-MIB::cDhcpv4ServerSubnetFreeAddressHigh
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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 |
| 1.3.6.1.4.1.9.10.122.0 | ciscoIetfDhcpv4SrvExtMIBNotifs | CISCO-IETF-DHCP-SERVER-EXT-MIB |
| 1.3.6.1.4.1.9.10.122.0.2 | cDhcpv4SrvExtNotifyPrefix | CISCO-IETF-DHCP-SERVER-EXT-MIB |
| 1.3.6.1.4.1.9.10.122.0.2.0 | cDhcpv4SrvExtNotify | CISCO-IETF-DHCP-SERVER-EXT-MIB |
| 1.3.6.1.4.1.9.10.122.0.2.0.3 | cDhcpv4ServerSubnetFreeAddressHigh | CISCO-IETF-DHCP-SERVER-EXT-MIB |