All MIBs › H3C-DHCPSNOOP-MIB › h3cDhcpSnoopSpoofServerDetected

h3cDhcpSnoopSpoofServerDetected

OID (symbolic): H3C-DHCPSNOOP-MIB::h3cDhcpSnoopSpoofServerDetected

OID (numeric): 1.3.6.1.4.1.2011.10.2.36.2.0.1

Node type: NOTIFICATION-TYPE

Description: To detect unauthorized DHCP servers on a network, the DHCP snooping device sends DHCP-DISCOVER messages through its downstream port (which is connected to the DHCP clients). If any response (DHCP-OFFER message) is received from the downstream port, an unauthorized DHCP server is considered present, and then the device sends a trap. With unauthorized DHCP server detection enabled, the interface sends a DHCP-DISCOVER message to detect unauthorized DHCP servers on the network. If this interface receives a DHCP-OFFER message, the DHCP server which sent it is considered unauthorized.

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> '' H3C-DHCPSNOOP-MIB::h3cDhcpSnoopSpoofServerDetected
snmptrap -v2c -c public <manager> '' 1.3.6.1.4.1.2011.10.2.36.2.0.1

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]:53699->[192.168.30.10]:162]:
  DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (93591491) 10 days, 19:58:34.91
  SNMPv2-MIB::snmpTrapOID.0 = OID: H3C-DHCPSNOOP-MIB::h3cDhcpSnoopSpoofServerDetected

Start monitoring H3C access-layer switch (DHCP Snooping) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the H3C-DHCPSNOOP-MIB::h3cDhcpSnoopSpoofServerDetected OID value, configure state conditions and alerts, and monitor any H3C access-layer switch (DHCP Snooping) from a single console.

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
1.3.6.1.4.1.2011	huawei	EXPERTV2-MIB
1.3.6.1.4.1.2011.10	h3c	HUAWEI-3COM-OID-MIB
1.3.6.1.4.1.2011.10.2	h3cCommon	HUAWEI-3COM-OID-MIB

Numeric OID	Name	Module
1.3.6.1.4.1.2011.10.2.36	h3cDhcpSnoop	H3C-DHCPSNOOP-MIB
1.3.6.1.4.1.2011.10.2.36.2	h3cDhcpSnoopTraps	H3C-DHCPSNOOP-MIB
1.3.6.1.4.1.2011.10.2.36.2.0	h3cDhcpSnoopTrapsPrefix	H3C-DHCPSNOOP-MIB
1.3.6.1.4.1.2011.10.2.36.2.0.1	h3cDhcpSnoopSpoofServerDetected	H3C-DHCPSNOOP-MIB

H3C-DHCPSNOOP-MIB :: h3cDhcpSnoopSpoofServerDetected

h3cDhcpSnoopSpoofServerDetected

Module

This MIB depends on