HM2-DHCPS-MIB

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Organization: Hirschmann Automation and Control GmbH

Last Updated: 2012-03-16

Category: Protocol: DHCP, Vendor: Belden

Description: Hirschmann HiOS (HM2) DHCP server MIB for managing DHCP server configuration and lease tables.

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What Is HM2-DHCPS-MIB?

HM2-DHCPS-MIB is a Hirschmann HiOS (HM2) vendor MIB that manages DHCP server configuration, address pools, active leases, and per-interface protocol counters on Hirschmann switches. It defines hm2DHCPServerPoolTable (hm2DHCPServerPoolStartIpAddress/EndIpAddress, hm2DHCPServerPoolLeaseTime, hm2DHCPServerPoolVlanId, hm2DHCPServerPoolRowStatus) for pool configuration, hm2DHCPServerLeaseTable (hm2DHCPServerLeaseState, hm2DHCPServerLeaseTimeRemaining, hm2DHCPServerLeaseClientMacAddress, hm2DHCPServerLeaseGateway) for active lease tracking, and hm2DHCPServerCounterIfTable, which exposes per-interface protocol counters such as hm2DHCPServerCounterDhcpv4Discovers/Offers/Requests/Acks/Naks/Declines/Releases. Together these let a monitoring system see not just whether the DHCP server is enabled but how well it is actually serving clients — pool exhaustion, lease churn, and DHCP message-level failures. It depends on HM2-TC-MIB for the HmEnabledStatus textual convention and on IF-MIB's InterfaceIndex for per-interface counter indexing, and is deployed on Hirschmann industrial Ethernet switches running the HiOS DHCP server feature; administrators can download the HM2-DHCPS-MIB to interpret these pool, lease, and counter tables.

IPNetwork Monitor allows you to monitor SNMP objects defined in HM2-DHCPS-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

Hirschmann industrial Ethernet switches (HiOS platform)

Monitoring Examples

An operator polls hm2DHCPServerLeaseTable to check hm2DHCPServerLeaseTimeRemaining and hm2DHCPServerLeaseState per client, and cross-references hm2DHCPServerCounterIfTable's hm2DHCPServerCounterDhcpv4Naks counter; a pool whose active lease count approaches the range defined by hm2DHCPServerPoolStartIpAddress/EndIpAddress while Naks climb would indicate the pool is running out of addresses and rejecting new clients.

What Can Be Monitored

DHCP address pool configuration and lease time
active lease table (state, remaining time, client MAC)
per-interface DHCPv4 message counters (discover/offer/request/ack/nak)
BOOTP request/reply/drop counters
server mode enable/disable state

Imported Objects

From HM2-TC-MIB

HmEnabledStatus
hm2ConfigurationMibs	OBJECT-IDENTITY

From IF-MIB

InterfaceIndex

From SNMPv2-SMI

Counter32
Integer32
IpAddress
MODULE-IDENTITY
OBJECT-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DisplayString
MacAddress
RowStatus

How to Use in IPNetwork Monitor

Example using hm2DHCPServerCounterBootpRequests OID:

Select a Hirschmann HiOS industrial Ethernet switch (DHCP server) as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type hm2DHCPServerCounterBootpRequests into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. The number of packets received that contain a Message Type of 1 (BOOTREQUEST) in the first octet and do not contain option number 53 (DHCP Message Type) in the options. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is a Counter32-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases sharply between polls relative to its normal baseline, since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
hm2DHCPServerConfigGroup	1.3.6.1.4.1.248.11.91.1.1.1
hm2DHCPServerConflictDHCPRrelayErrorReturn	1.3.6.1.4.1.248.11.91.3.2			{0} and {1} cannot be active at the same time.
C32 hm2DHCPServerCounterBootpDroppedNotServingSubnet	1.3.6.1.4.1.248.11.91.1.1.4.2.1.6	Counter32	read-only	The number of BOOTP packets dropped due to the server not being configured or not otherwise able to serve addresses on the subnet from which this message was received.
C32 hm2DHCPServerCounterBootpDroppedUnknownClients	1.3.6.1.4.1.248.11.91.1.1.4.2.1.5	Counter32	read-only	The number of BOOTP packets dropped due to the server not recognizing or not providing service to the hardware address received in the incoming packet.
C32 hm2DHCPServerCounterBootpInvalids	1.3.6.1.4.1.248.11.91.1.1.4.2.1.3	Counter32	read-only	The number of packets received that do not contain a Message Type of 1 (BOOTREQUEST) in the first octet or are not valid BOOTP packets (e.g., too short, invalid field in packet header).
C32 hm2DHCPServerCounterBootpReplies	1.3.6.1.4.1.248.11.91.1.1.4.2.1.4	Counter32	read-only	The number of packets sent that contain a Message Type of 2 (BOOTREPLY) in the first octet and do not contain option number 53 (DHCP Message Type) in the options.
C32 hm2DHCPServerCounterBootpRequestsEx	1.3.6.1.4.1.248.11.91.1.1.4.2.1.2	Counter32	read-only	The number of packets received that contain a Message Type of 1 (BOOTREQUEST) in the first octet and do not contain option number 53 (DHCP Message Type) in the options.
C32 hm2DHCPServerCounterDhcpv4Acks	1.3.6.1.4.1.248.11.91.1.1.4.2.1.24	Counter32	read-only	The number of DHCPACK (option 53 with value 5) packets sent.
C32 hm2DHCPServerCounterDhcpv4Declines	1.3.6.1.4.1.248.11.91.1.1.4.2.1.23	Counter32	read-only	The number of DHCPDECLINE (option 53 with value 4) packets received.
C32 hm2DHCPServerCounterDhcpv4Discovers	1.3.6.1.4.1.248.11.91.1.1.4.2.1.20	Counter32	read-only	The number of DHCPDISCOVER (option 53 with value 1) packets received.
C32 hm2DHCPServerCounterDhcpv4DroppedNotServingSubnet	1.3.6.1.4.1.248.11.91.1.1.4.2.1.31	Counter32	read-only	The number of DHCP packets dropped due to the server not being configured or not otherwise able to serve addresses on the subnet from which this message was received.
C32 hm2DHCPServerCounterDhcpv4DroppedUnknownClient	1.3.6.1.4.1.248.11.91.1.1.4.2.1.30	Counter32	read-only	The number of DHCP packets dropped due to the server not recognizing or not providing service to the client-id and/or hardware address received in the incoming packet.
C32 hm2DHCPServerCounterDhcpv4ForcedRenews	1.3.6.1.4.1.248.11.91.1.1.4.2.1.28	Counter32	read-only	The number of DHCPFORCERENEW (option 53 with value 9) packets sent.
C32 hm2DHCPServerCounterDhcpv4Informs	1.3.6.1.4.1.248.11.91.1.1.4.2.1.27	Counter32	read-only	The number of DHCPINFORM (option 53 with value 8) packets received.
C32 hm2DHCPServerCounterDhcpv4Invalids	1.3.6.1.4.1.248.11.91.1.1.4.2.1.29	Counter32	read-only	The number of DHCP packets received whose DHCP message type (i.e., option number 53) is not understood or handled by the server.
C32 hm2DHCPServerCounterDhcpv4Naks	1.3.6.1.4.1.248.11.91.1.1.4.2.1.25	Counter32	read-only	The number of DHCPNACK (option 53 with value 6) packets sent.
C32 hm2DHCPServerCounterDhcpv4Offers	1.3.6.1.4.1.248.11.91.1.1.4.2.1.21	Counter32	read-only	The number of DHCPOFFER (option 53 with value 2) packets sent.
C32 hm2DHCPServerCounterDhcpv4Releases	1.3.6.1.4.1.248.11.91.1.1.4.2.1.26	Counter32	read-only	The number of DHCPRELEASE (option 53 with value 7) packets received.
C32 hm2DHCPServerCounterDhcpv4Requests	1.3.6.1.4.1.248.11.91.1.1.4.2.1.22	Counter32	read-only	The number of DHCPREQUEST (option 53 with value 3) packets received.
hm2DHCPServerCounterGroup	1.3.6.1.4.1.248.11.91.1.1.4
hm2DHCPServerCounterIfEntry	1.3.6.1.4.1.248.11.91.1.1.4.2.1		not-accessible	A logical row in the hm2DHCPServerCounterIfTable.
NUM hm2DHCPServerCounterIfIndex	1.3.6.1.4.1.248.11.91.1.1.4.2.1.1	InterfaceIndex	read-only	The index of the interface.
hm2DHCPServerCounterIfTable	1.3.6.1.4.1.248.11.91.1.1.4.2		not-accessible	A table containing current configuration information for each interface.
C32 hm2DHCPServerCounterMiscOtherDhcpServer	1.3.6.1.4.1.248.11.91.1.1.4.2.1.40	Counter32	read-only	The number of BOOTP and DHCP packets from another DHCP server seen on this interface.
hm2DHCPServerGroup	1.3.6.1.4.1.248.11.91.1.1
hm2DHCPServerIfConfigEntry	1.3.6.1.4.1.248.11.91.1.1.3.1.1		not-accessible	A logical row in the hm2DHCPServerIfConfigTable.
NUM hm2DHCPServerIfConfigIndex	1.3.6.1.4.1.248.11.91.1.1.3.1.1.1	InterfaceIndex	read-only	The index of the interface.
HME hm2DHCPServerIfConfigMode	1.3.6.1.4.1.248.11.91.1.1.3.1.1.2	HmEnabledStatus	read-write	Enable or disable DHCP server on this interface.
hm2DHCPServerIfConfigTable	1.3.6.1.4.1.248.11.91.1.1.3.1		not-accessible	A table containing current configuration information for each interface.
hm2DHCPServerInterfaceGroup	1.3.6.1.4.1.248.11.91.1.1.3
INT hm2DHCPServerLeaseAction	1.3.6.1.4.1.248.11.91.1.1.2.1.1.12	INTEGER	read-write	Manually release this ip address for new assignment.
OCT hm2DHCPServerLeaseCircuitId	1.3.6.1.4.1.248.11.91.1.1.2.1.1.10	OCTET STRING	read-only	The Cicuit Identifier of the entry that was used to lease the IP Address.
OCT hm2DHCPServerLeaseClientId	1.3.6.1.4.1.248.11.91.1.1.2.1.1.8	OCTET STRING	read-only	The Client Identifier of the entry that was used to lease the IP Address.
MAC hm2DHCPServerLeaseClientMacAddress	1.3.6.1.4.1.248.11.91.1.1.2.1.1.6	MacAddress	read-only	The MAC Address of the entry that has leased the IP Address.
hm2DHCPServerLeaseEntry	1.3.6.1.4.1.248.11.91.1.1.2.1.1		not-accessible	A logical row in the hm2DHCPServerLeaseTable.
IP hm2DHCPServerLeaseGateway	1.3.6.1.4.1.248.11.91.1.1.2.1.1.7	IpAddress	read-only	The IPv4 address of the Gatewayinterface that was used to lease the IP Address.
hm2DHCPServerLeaseGroup	1.3.6.1.4.1.248.11.91.1.1.2
I32 hm2DHCPServerLeaseIfIndex	1.3.6.1.4.1.248.11.91.1.1.2.1.1.5	Integer32	read-only	The interface index where the lease is currently active.
IP hm2DHCPServerLeaseIpAddress	1.3.6.1.4.1.248.11.91.1.1.2.1.1.2	IpAddress	read-only	This is an IP address from the pool with index hm2DHCPServerLeasePoolIndex.
U32 hm2DHCPServerLeasePoolIndex	1.3.6.1.4.1.248.11.91.1.1.2.1.1.1	Unsigned32	read-only	The index of the hm2DHCPServerPoolTable above.
OCT hm2DHCPServerLeaseRemoteId	1.3.6.1.4.1.248.11.91.1.1.2.1.1.9	OCTET STRING	read-only	The Remote Identifier of the entry that was used to lease the IP Address.
U32 hm2DHCPServerLeaseStartTime	1.3.6.1.4.1.248.11.91.1.1.2.1.1.11	Unsigned32	read-only	Lease start Time.
INT hm2DHCPServerLeaseState	1.3.6.1.4.1.248.11.91.1.1.2.1.1.3	INTEGER	read-only	The state of the lease.
hm2DHCPServerLeaseTable	1.3.6.1.4.1.248.11.91.1.1.2.1		not-accessible	A table containing the DHCP server leases.
U32 hm2DHCPServerLeaseTimeRemaining	1.3.6.1.4.1.248.11.91.1.1.2.1.1.4	Unsigned32	read-only	The remaining time of the lease configured in hm2DHCPServerPoolLeaseTime.
I32 hm2DHCPServerLeaseVlanId	1.3.6.1.4.1.248.11.91.1.1.2.1.1.13	Integer32	read-only	The Vlan ID of the entry that is used to lease the IP Address. A value of -1 corresponds to management vlan (the default), any other value (1-4042) represents a specific VLAN
U32 hm2DHCPServerMaxLeaseEntries	1.3.6.1.4.1.248.11.91.1.1.1.3	Unsigned32	read-only	Maximum possible entries in hm2DHCPServerLeaseTable.
U32 hm2DHCPServerMaxPoolEntries	1.3.6.1.4.1.248.11.91.1.1.1.2	Unsigned32	read-only	Maximum possible entries in hm2DHCPServerPoolTable.
hm2DHCPServerMibNotifications	1.3.6.1.4.1.248.11.91.0
hm2DHCPServerMibObjects	1.3.6.1.4.1.248.11.91.1
HME hm2DHCPServerMode	1.3.6.1.4.1.248.11.91.1.1.1.1	HmEnabledStatus	read-write	Enable or disable DHCP server global.
OCT hm2DHCPServerPoolCircuitId	1.3.6.1.4.1.248.11.91.1.1.1.5.1.11	OCTET STRING	read-create	The Cicuit Identifier of the entry that is used to lease the IP Address. The Circuit Identifier must be send in Option 82 as defined in RFC 3046.
OCT hm2DHCPServerPoolClientId	1.3.6.1.4.1.248.11.91.1.1.1.5.1.9	OCTET STRING	read-create	The Client Identifier of the entry that is used to lease the IP Address.
IP hm2DHCPServerPoolEndIpAddress	1.3.6.1.4.1.248.11.91.1.1.1.5.1.3	IpAddress	read-create	The IPv4 address of the last address in the range. The value of hm2DHCPServerPoolEndIpAddress MUST be greater than or equal to the value of hm2DHCPServerPoolStartIpAddress.
hm2DHCPServerPoolEntry	1.3.6.1.4.1.248.11.91.1.1.1.5.1		not-accessible	A logical row in the hm2DHCPServerPoolTable.
U32 hm2DHCPServerPoolErrorStatus	1.3.6.1.4.1.248.11.91.1.1.1.5.1.99	Unsigned32	read-only	The error Code by create a new Pool.
BIT hm2DHCPServerPoolFlags	1.3.6.1.4.1.248.11.91.1.1.1.5.1.5	Bits	read-create	This object shows the parameters that are used to lease the IP Address.
IP hm2DHCPServerPoolGateway	1.3.6.1.4.1.248.11.91.1.1.1.5.1.8	IpAddress	read-create	The IPv4 address of the Gatewayinterface that is used to lease the IP Address.
HME hm2DHCPServerPoolHirschmannClient	1.3.6.1.4.1.248.11.91.1.1.1.5.1.12	HmEnabledStatus	read-create	Enable or disable Hirschmann Multicast.
I32 hm2DHCPServerPoolIfIndex	1.3.6.1.4.1.248.11.91.1.1.1.5.1.6	Integer32	read-create	The index of the interface.
U32 hm2DHCPServerPoolIndex	1.3.6.1.4.1.248.11.91.1.1.1.5.1.1	Unsigned32	read-only	The index of hm2DHCPServerPoolTable.
U32 hm2DHCPServerPoolLeaseTime	1.3.6.1.4.1.248.11.91.1.1.1.5.1.4	Unsigned32	read-create	The pools lease time in number of seconds. A value of 4294967295 SHOULD be used for leases that have a lease time which is 'infinite' and for BOOTP leases.
MAC hm2DHCPServerPoolMacAddress	1.3.6.1.4.1.248.11.91.1.1.1.5.1.7	MacAddress	read-create	The MAC Address of the entry that is used to lease the IP Address.
INT hm2DHCPServerPoolMethod	1.3.6.1.4.1.248.11.91.1.1.1.5.1.36	INTEGER	read-write	The source of the DHCP Server Pool. User can set the object to none(1), config(2), ttdp(3).
STR hm2DHCPServerPoolOptionConfFileName	1.3.6.1.4.1.248.11.91.1.1.1.5.1.30	DisplayString	read-create	Full specified name of the configuration file e.g. tftp://192.9.200.1/cfg/config1.sav. An empty string zeros the SNAME and the FILE field in the DHCP header.
IP hm2DHCPServerPoolOptionDNS	1.3.6.1.4.1.248.11.91.1.1.1.5.1.34	IpAddress	read-create	The IPv4 address of the DNS Server. A value of 0 disables the attachment of the option field in the DHCP message.
IP hm2DHCPServerPoolOptionGateway	1.3.6.1.4.1.248.11.91.1.1.1.5.1.31	IpAddress	read-create	The IPv4 address of the Gateway. A value of 0 disables the attachment of the option field in the DHCP message.
STR hm2DHCPServerPoolOptionHostname	1.3.6.1.4.1.248.11.91.1.1.1.5.1.35	DisplayString	read-create	The name of the client (Option 12). An empty string disables the attachment of the option field in the DHCP message.
IP hm2DHCPServerPoolOptionNetmask	1.3.6.1.4.1.248.11.91.1.1.1.5.1.32	IpAddress	read-create	The subnet mask. A value of 0 disables the attachment of the option field in the DHCP message.
IP hm2DHCPServerPoolOptionWINS	1.3.6.1.4.1.248.11.91.1.1.1.5.1.33	IpAddress	read-create	The IPv4 address of the WINS Server. A value of 0 disables the attachment of the option field in the DHCP message.
OCT hm2DHCPServerPoolRemoteId	1.3.6.1.4.1.248.11.91.1.1.1.5.1.10	OCTET STRING	read-create	The Remote Identifier of the entry that is used to lease the IP Address. The Remote Identifier must be send in Option 82 as defined in RFC 3046.
ROW hm2DHCPServerPoolRowStatus	1.3.6.1.4.1.248.11.91.1.1.1.5.1.100	RowStatus	read-create	This object indicates the status of this entry.
IP hm2DHCPServerPoolStartIpAddress	1.3.6.1.4.1.248.11.91.1.1.1.5.1.2	IpAddress	read-create	The IPv4 address of the first address in the range. The value of hm2DHCPServerPoolStartIpAddress MUST be less than or equal to the value of hm2DHCPServerPoolEndIpAddress.
hm2DHCPServerPoolTable	1.3.6.1.4.1.248.11.91.1.1.1.5		not-accessible	A table containing the DHCP server pools.
I32 hm2DHCPServerPoolVlanId	1.3.6.1.4.1.248.11.91.1.1.1.5.1.13	Integer32	read-create	The Vlan ID of the entry that is used to lease the IP Address. A value of -1 corresponds to management vlan (the default), any other value (1-4042) represents a specific VLAN
hm2DHCPServerRowStatusInvalidConfigurationErrorReturn	1.3.6.1.4.1.248.11.91.3.1			DHCP Server pool with index {0} cannot be enabled, errors in data entry.
hm2DHCPServerSNMPExtensionGroup	1.3.6.1.4.1.248.11.91.3
hm2DhcpsMib	1.3.6.1.4.1.248.11.91			Hirschmann DHCP server MIB. Copyright (C) 2012. All Rights Reserved.

RFC description

Hirschmann DHCP server MIB for industrial network switches. Manages DHCP server pools, leases, and interface configuration.

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