HMDHCPS-SNMP-MIB

All MIBs › HMDHCPS-SNMP-MIB

Organization: Hirschmann Automation and Control GmbH

Last Updated: 2013-04-18

Category: Protocol: DHCP, Vendor: Belden

Description: Hirschmann DHCP server SNMP MIB for managing DHCP server address pools and lease tables on Hirschmann devices.

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What Is HMDHCPS-SNMP-MIB?

HMDHCPS-SNMP-MIB is a Hirschmann Automation and Control private MIB (under hmConfiguration) that models the built-in DHCP server running on Hirschmann industrial networking devices, covering server-wide enable state, address pool configuration, and active lease tracking. It exposes pool definitions in hmDHCPServerPoolTable (start/end IP range, lease time, gateway, VLAN ID, and option fields such as DNS/WINS/hostname), active client leases in hmDHCPServerLeaseTable (lease state, remaining time, client MAC and Option-82 remote/circuit ID), and detailed BOOTP/DHCPv4 protocol counters per interface in hmDHCPServerCounterIfTable (discovers, offers, acks, naks, declines, forced renews). This lets an operator confirm the DHCP server is issuing and renewing leases correctly and diagnose address-pool exhaustion or malformed client requests on an industrial network. It depends on HMPRIV-MGMT-SNMP-MIB for the shared hmConfiguration branch it is registered under. It is deployed on Hirschmann industrial switches and routers acting as the local DHCP server for automation/control networks, and administrators can download the HMDHCPS-SNMP-MIB file to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in HMDHCPS-SNMP-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/routers with built-in DHCP server

Monitoring Examples

An operator polls hmDHCPServerPoolTable to check hmDHCPServerPoolErrorStatus and remaining free addresses implied by hmDHCPServerLeaseTable entries in the bound(4) state; a pool with a high proportion of leases in bound state and a nonzero error status would indicate the DHCP address range is nearly exhausted and new clients may be denied service.

What Can Be Monitored

DHCP server global/per-interface enable state
address pool range and lease-time configuration
active lease state and remaining time per client
DHCPv4 discover/offer/request/ack/nak counters
BOOTP request/reply/drop counters

Imported Objects

From HMPRIV-MGMT-SNMP-MIB

hmConfiguration

MODULE-IDENTITY

From SNMPv2-SMI

Counter32
Integer32
IpAddress
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DisplayString
MacAddress
RowStatus

How to Use in IPNetwork Monitor

Example using hmDHCPServerCounterBootpRequests OID:

Select a Hirschmann industrial switch/router (built-in 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 hmDHCPServerCounterBootpRequests 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
hmDhcps	1.3.6.1.4.1.248.14.16			The Hirschmann Private DHCP MIB definitions for Platform devices.
INT hmDHCPServerAddrProbe	1.3.6.1.4.1.248.14.16.1.1.4	INTEGER	read-write	If set to enable the DHCP server probes the allocated address with an ICMP Echo Request before offering to the client.
hmDHCPServerConfigGroup	1.3.6.1.4.1.248.14.16.1.1
C32 hmDHCPServerCounterBootpDroppedNotServingSubnet	1.3.6.1.4.1.248.14.16.1.4.2.1.6	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 hmDHCPServerCounterBootpDroppedUnknownClients	1.3.6.1.4.1.248.14.16.1.4.2.1.5	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 hmDHCPServerCounterBootpInvalids	1.3.6.1.4.1.248.14.16.1.4.2.1.3	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 hmDHCPServerCounterBootpReplies	1.3.6.1.4.1.248.14.16.1.4.2.1.4	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 hmDHCPServerCounterBootpRequestsEx	1.3.6.1.4.1.248.14.16.1.4.2.1.2	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 hmDHCPServerCounterDhcpv4Acks	1.3.6.1.4.1.248.14.16.1.4.2.1.24	Counter32	read-only	The number of DHCPACK (option 53 with value 5) packets sent.
C32 hmDHCPServerCounterDhcpv4Declines	1.3.6.1.4.1.248.14.16.1.4.2.1.23	Counter32	read-only	The number of DHCPDECLINE (option 53 with value 4) packets received.
C32 hmDHCPServerCounterDhcpv4Discovers	1.3.6.1.4.1.248.14.16.1.4.2.1.20	Counter32	read-only	The number of DHCPDISCOVER (option 53 with value 1) packets received.
C32 hmDHCPServerCounterDhcpv4DroppedNotServingSubnet	1.3.6.1.4.1.248.14.16.1.4.2.1.31	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 hmDHCPServerCounterDhcpv4DroppedUnknownClient	1.3.6.1.4.1.248.14.16.1.4.2.1.30	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 hmDHCPServerCounterDhcpv4ForcedRenews	1.3.6.1.4.1.248.14.16.1.4.2.1.28	Counter32	read-only	The number of DHCPFORCERENEW (option 53 with value 9) packets sent.
C32 hmDHCPServerCounterDhcpv4Informs	1.3.6.1.4.1.248.14.16.1.4.2.1.27	Counter32	read-only	The number of DHCPINFORM (option 53 with value 8) packets received.
C32 hmDHCPServerCounterDhcpv4Invalids	1.3.6.1.4.1.248.14.16.1.4.2.1.29	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 hmDHCPServerCounterDhcpv4Naks	1.3.6.1.4.1.248.14.16.1.4.2.1.25	Counter32	read-only	The number of DHCPNACK (option 53 with value 6) packets sent.
C32 hmDHCPServerCounterDhcpv4Offers	1.3.6.1.4.1.248.14.16.1.4.2.1.21	Counter32	read-only	The number of DHCPOFFER (option 53 with value 2) packets sent.
C32 hmDHCPServerCounterDhcpv4Releases	1.3.6.1.4.1.248.14.16.1.4.2.1.26	Counter32	read-only	The number of DHCPRELEASE (option 53 with value 7) packets received.
C32 hmDHCPServerCounterDhcpv4Requests	1.3.6.1.4.1.248.14.16.1.4.2.1.22	Counter32	read-only	The number of DHCPREQUEST (option 53 with value 3) packets received.
hmDHCPServerCounterGroup	1.3.6.1.4.1.248.14.16.1.4
hmDHCPServerCounterIfEntry	1.3.6.1.4.1.248.14.16.1.4.2.1		not-accessible	A logical row in the hmDHCPServerCounterIfTable.
I32 hmDHCPServerCounterIfIndex	1.3.6.1.4.1.248.14.16.1.4.2.1.1	Integer32	read-only	The index of the interface.
hmDHCPServerCounterIfTable	1.3.6.1.4.1.248.14.16.1.4.2		not-accessible	A table containing current configuration information for each interface.
C32 hmDHCPServerCounterMiscOtherDhcpServer	1.3.6.1.4.1.248.14.16.1.4.2.1.40	Counter32	read-only	The number of BOOTP and DHCP packets from another DHCP server seen on this interface.
hmDHCPServerGroup	1.3.6.1.4.1.248.14.16.1
hmDHCPServerIfConfigEntry	1.3.6.1.4.1.248.14.16.1.3.1.1		not-accessible	A logical row in the hmDHCPServerIfConfigTable.
I32 hmDHCPServerIfConfigIndex	1.3.6.1.4.1.248.14.16.1.3.1.1.1	Integer32	read-only	The index of the interface.
INT hmDHCPServerIfConfigMode	1.3.6.1.4.1.248.14.16.1.3.1.1.2	INTEGER	read-write	Enable or disable DHCP server on this interface.
hmDHCPServerIfConfigTable	1.3.6.1.4.1.248.14.16.1.3.1		not-accessible	A table containing current configuration information for each interface.
hmDHCPServerInterfaceGroup	1.3.6.1.4.1.248.14.16.1.3
INT hmDHCPServerLeaseAction	1.3.6.1.4.1.248.14.16.1.2.1.1.12	INTEGER	read-write	Manually release this ip address for new assignment.
OCT hmDHCPServerLeaseCircuitId	1.3.6.1.4.1.248.14.16.1.2.1.1.10	OCTET STRING	read-only	The Cicuit Identifier of the entry that was used to lease the IP Address.
OCT hmDHCPServerLeaseClientId	1.3.6.1.4.1.248.14.16.1.2.1.1.8	OCTET STRING	read-only	The Client Identifier of the entry that was used to lease the IP Address.
MAC hmDHCPServerLeaseClientMacAddress	1.3.6.1.4.1.248.14.16.1.2.1.1.6	MacAddress	read-only	The MAC Address of the entry that has leased the IP Address.
hmDHCPServerLeaseEntry	1.3.6.1.4.1.248.14.16.1.2.1.1		not-accessible	A logical row in the hmDHCPServerLeaseTable.
IP hmDHCPServerLeaseGateway	1.3.6.1.4.1.248.14.16.1.2.1.1.7	IpAddress	read-only	The IPv4 address of the Gatewayinterface that was used to lease the IP Address.
hmDHCPServerLeaseGroup	1.3.6.1.4.1.248.14.16.1.2
I32 hmDHCPServerLeaseIfIndex	1.3.6.1.4.1.248.14.16.1.2.1.1.5	Integer32	read-only	The interface index where the lease is currently active.
IP hmDHCPServerLeaseIpAddress	1.3.6.1.4.1.248.14.16.1.2.1.1.2	IpAddress	read-only	This is an IP address from the pool with index hmDHCPServerLeasePoolIndex.
U32 hmDHCPServerLeasePoolIndex	1.3.6.1.4.1.248.14.16.1.2.1.1.1	Unsigned32	read-only	The index of the hmDHCPServerPoolTable above.
OCT hmDHCPServerLeaseRemoteId	1.3.6.1.4.1.248.14.16.1.2.1.1.9	OCTET STRING	read-only	The Remote Identifier of the entry that was used to lease the IP Address.
U32 hmDHCPServerLeaseStartTime	1.3.6.1.4.1.248.14.16.1.2.1.1.11	Unsigned32	read-only	Lease start Time.
INT hmDHCPServerLeaseState	1.3.6.1.4.1.248.14.16.1.2.1.1.3	INTEGER	read-only	The state of the lease.
hmDHCPServerLeaseTable	1.3.6.1.4.1.248.14.16.1.2.1		not-accessible	A table containing the DHCP server leases.
U32 hmDHCPServerLeaseTimeRemaining	1.3.6.1.4.1.248.14.16.1.2.1.1.4	Unsigned32	read-only	The remaining time of the lease configured in hmDHCPServerPoolLeaseTime.
I32 hmDHCPServerLeaseVlanId	1.3.6.1.4.1.248.14.16.1.2.1.1.13	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 hmDHCPServerMaxLeaseEntries	1.3.6.1.4.1.248.14.16.1.1.3	Unsigned32	read-only	Maximum possible entries in hmDHCPServerLeaseTable.
U32 hmDHCPServerMaxPoolEntries	1.3.6.1.4.1.248.14.16.1.1.2	Unsigned32	read-only	Maximum possible entries in hmDHCPServerPoolTable.
INT hmDHCPServerMode	1.3.6.1.4.1.248.14.16.1.1.1	INTEGER	read-write	Enable or disable DHCP server global.
OCT hmDHCPServerPoolCircuitId	1.3.6.1.4.1.248.14.16.1.1.5.1.11	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 hmDHCPServerPoolClientId	1.3.6.1.4.1.248.14.16.1.1.5.1.9	OCTET STRING	read-create	The Client Identifier of the entry that is used to lease the IP Address.
IP hmDHCPServerPoolEndIpAddress	1.3.6.1.4.1.248.14.16.1.1.5.1.3	IpAddress	read-create	The IPv4 address of the last address in the range. The value of hmDHCPServerPoolEndIpAddress MUST be greater than or equal to the value of hmDHCPServerPoolStartIpAddress.
hmDHCPServerPoolEntry	1.3.6.1.4.1.248.14.16.1.1.5.1		not-accessible	A logical row in the hmDHCPServerPoolTable.
U32 hmDHCPServerPoolErrorStatus	1.3.6.1.4.1.248.14.16.1.1.5.1.99	Unsigned32	read-only	The error Code by create a new Pool.
BIT hmDHCPServerPoolFlags	1.3.6.1.4.1.248.14.16.1.1.5.1.5	Bits	read-create	This object shows the parameters that are used to lease the IP Address.
IP hmDHCPServerPoolGateway	1.3.6.1.4.1.248.14.16.1.1.5.1.8	IpAddress	read-create	The IPv4 address of the Gatewayinterface that is used to lease the IP Address.
INT hmDHCPServerPoolHirschmannClient	1.3.6.1.4.1.248.14.16.1.1.5.1.12	INTEGER	read-create	Enable or disable Hirschmann Multicast.
I32 hmDHCPServerPoolIfIndex	1.3.6.1.4.1.248.14.16.1.1.5.1.6	Integer32	read-create	The index of the interface.
U32 hmDHCPServerPoolIndex	1.3.6.1.4.1.248.14.16.1.1.5.1.1	Unsigned32	read-only	The index of hmDHCPServerPoolTable.
U32 hmDHCPServerPoolLeaseTime	1.3.6.1.4.1.248.14.16.1.1.5.1.4	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 hmDHCPServerPoolMacAddress	1.3.6.1.4.1.248.14.16.1.1.5.1.7	MacAddress	read-create	The MAC Address of the entry that is used to lease the IP Address.
STR hmDHCPServerPoolOptionConfFileName	1.3.6.1.4.1.248.14.16.1.1.5.1.30	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 hmDHCPServerPoolOptionDNS	1.3.6.1.4.1.248.14.16.1.1.5.1.34	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 hmDHCPServerPoolOptionGateway	1.3.6.1.4.1.248.14.16.1.1.5.1.31	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 hmDHCPServerPoolOptionHostname	1.3.6.1.4.1.248.14.16.1.1.5.1.35	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 hmDHCPServerPoolOptionNetmask	1.3.6.1.4.1.248.14.16.1.1.5.1.32	IpAddress	read-create	The subnet mask. A value of 0 disables the attachment of the option field in the DHCP message.
OCT hmDHCPServerPoolOptionVendor	1.3.6.1.4.1.248.14.16.1.1.5.1.36	OCTET STRING	read-create	Vendor Specific Information (Option 43) as hex string.
IP hmDHCPServerPoolOptionWINS	1.3.6.1.4.1.248.14.16.1.1.5.1.33	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 hmDHCPServerPoolRemoteId	1.3.6.1.4.1.248.14.16.1.1.5.1.10	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 hmDHCPServerPoolRowStatus	1.3.6.1.4.1.248.14.16.1.1.5.1.100	RowStatus	read-create	This object indicates the status of this entry.
IP hmDHCPServerPoolStartIpAddress	1.3.6.1.4.1.248.14.16.1.1.5.1.2	IpAddress	read-write	The IPv4 address of the first address in the range. The value of hmDHCPServerPoolStartIpAddress MUST be less than or equal to the value of hmDHCPServerPoolEndIpAddress.
hmDHCPServerPoolTable	1.3.6.1.4.1.248.14.16.1.1.5		not-accessible	A table containing the DHCP server pools.
I32 hmDHCPServerPoolVlanId	1.3.6.1.4.1.248.14.16.1.1.5.1.13	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

RFC description

Hirschmann private DHCP server MIB definitions for platform devices with pool and VLAN support.

Start monitoring Hirschmann industrial switch/router (built-in DHCP server) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

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