DHCP-SERVER-MIB

All MIBs › DHCP-SERVER-MIB

Organization: Lucent Technologies

Last Updated: 2006-06-22

Category: Protocol: DHCP, Standard: IETF

Description: DHCP server management MIB providing objects to configure address pools, lease management, and monitor server statistics.

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What Is DHCP-SERVER-MIB?

The DHCP-SERVER-MIB (under the Lucent "ipspg"/"ipspgDHCP" OID branch) is a vendor-specific module for devices implementing the server side of BOOTP and DHCP for IPv4, originally developed for Lucent's IP Services Product Group access/gateway platforms. It exposes objects for configuring DHCP address pools and lease parameters as well as monitoring server-side operational statistics related to how leases are allocated and consumed. Its monitoring value is primarily software/service-state focused: administrators watch pool utilization and lease statistics to detect address-pool exhaustion, misconfigured scopes, or a DHCP service that has stopped responding to client requests. It is grounded in the standards-based DHCP (RFC 2131) and BOOTP protocols but implemented as a private vendor MIB rather than a formally standardized IETF DHCP server MIB. It is deployed on Lucent/Avaya-descended broadband access gateways or routers that provide integrated DHCP server functionality to downstream subscriber or LAN clients.

IPNetwork Monitor allows you to monitor SNMP objects defined in DHCP-SERVER-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

Lucent/Avaya IP Services access gateways/routers with integrated DHCP server

Monitoring Examples

The sample objects available are limited to top-level OID branch names (lucent, ipspg, ipspgDHCP) rather than leaf objects, so specific pool/lease table names cannot be confirmed from the source. An operator would typically expect to poll an address-pool table for allocated-versus-available lease counts and a statistics group for requests, offers, acks, and naks to detect pool exhaustion or a misbehaving DHCP relay. This description is necessarily general given the limited object detail available.

What Can Be Monitored

DHCP address pool utilization
lease allocation/expiration
DHCP request/offer/ack/nak statistics

Imported Objects

From RFC1155-SMI

TimeTicks
enterprises

From RFC1213-MIB

DisplayString

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Counter64
Gauge32
Integer32
IpAddress
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

DateAndTime
RowStatus
TEXTUAL-CONVENTION
TruthValue

How to Use in IPNetwork Monitor

Example using dhcpServBootpCountRequests OID:

Select a Lucent/Avaya IP Services access gateway/router (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 dhcpServBootpCountRequests into the Find box to locate it in the OID tree, 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
C32 dhcpServBootpCountDroppedNotServingSubnet	1.3.6.1.4.1.1751.1.48.1.1.1.1.3.5	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 dhcpServBootpCountDroppedUnknownClients	1.3.6.1.4.1.1751.1.48.1.1.1.1.3.4	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.
dhcpServBootpCounters	1.3.6.1.4.1.1751.1.48.1.1.1.1.3			Group of objects that count various BOOTP events.
C32 dhcpServBootpCountInvalids	1.3.6.1.4.1.1751.1.48.1.1.1.1.3.2	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 dhcpServBootpCountReplies	1.3.6.1.4.1.1751.1.48.1.1.1.1.3.3	Counter32	read-only	The number of packets sent 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 dhcpServBootpCountRequestsEx	1.3.6.1.4.1.1751.1.48.1.1.1.1.3.1	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.
dhcpServBootpStatistics	1.3.6.1.4.1.1751.1.48.1.1.1.1.5			Group of objects that measure various BOOTP statistics.
TIK dhcpServBootpStatLastArrivalTime	1.3.6.1.4.1.1751.1.48.1.1.1.1.5.3	TimeTicks	read-only	The number of seconds since the last valid BOOTP message was received by the server. Invalid messages do not cause this value to change. If valid no messages have been received, then this object contains a zero value.
NUM dhcpServBootpStatMaxArrivalInterval	1.3.6.1.4.1.1751.1.48.1.1.1.1.5.2	DhcpServTimeInterval	read-only	The maximum amount of time between receiving two BOOTP messages. A message is received at the server when the server is able to begin processing the message. This typically occurs immediately after the message is read into server memory. If no messages have been received, then this object contains a zero value.
NUM dhcpServBootpStatMaxResponseTime	1.3.6.1.4.1.1751.1.48.1.1.1.1.5.5	DhcpServTimeInterval	read-only	The largest time interval measured as the difference between the arrival of a BOOTP message at the server and the successful transmission of the response to that message. A message is received at the server when the server is able to begin processing the message. A message is transmitted after the server has no further use for the message. Note that the operating system may still have the message queued internally. The operating system queue time is not to be considered as part of the response time. Invalid messages do not cause this value to change. If no valid messages have been received, then this object contains a zero value.
NUM dhcpServBootpStatMinArrivalInterval	1.3.6.1.4.1.1751.1.48.1.1.1.1.5.1	DhcpServTimeInterval	read-only	The minimum amount of time between receiving two BOOTP messages. A message is received at the server when the server is able to begin processing the message. This typically occurs immediately after the message is read into server memory. If no messages have been received, then this object contains a zero value.
NUM dhcpServBootpStatMinResponseTime	1.3.6.1.4.1.1751.1.48.1.1.1.1.5.4	DhcpServTimeInterval	read-only	The smallest time interval measured as the difference between the arrival of a BOOTP message at the server and the successful transmission of the response to that message. A message is received at the server when the server is able to begin processing the message. A message is transmitted after the server has no further use for the message. Note that the operating system may still have the message queued internally. The operating system queue time is not to be considered as part of the response time. Invalid messages do not cause this value to change. If no valid messages have been received, then this object contains a zero value.
NUM dhcpServBootpStatSumResponseTime	1.3.6.1.4.1.1751.1.48.1.1.1.1.5.6	DhcpServTimeInterval	read-only	The sum of the response time intervals in milli-seconds where a response time interval is measured as the difference between the arrival of a BOOTP message at the server and the successful transmission of the response to that message. A message is received at the server when the server is able to begin processing the message. A message is transmitted after the server has no further use for the message. Note that the operating system may still have the message queued internally. The operating system queue time is not to be considered as part of the response time. Invalid messages do not cause this value to change. If no valid messages have been received, then this object contains a zero value.
dhcpServConfiguration	1.3.6.1.4.1.1751.1.48.1.1.1.1.7			Objects that contain pre-configured and Dynamic Config. Info.
I32 dhcpServCountFullSubnets	1.3.6.1.4.1.1751.1.48.1.1.1.1.2.3	Integer32	read-only	The number subnets managed by the server (i.e. configured), in which the address pools have been exhausted.
I32 dhcpServCountUnusedSubnets	1.3.6.1.4.1.1751.1.48.1.1.1.1.2.2	Integer32	read-only	The number subnets managed by the server (i.e. configured), from which the server has issued no leases.
I32 dhcpServCountUsedSubnets	1.3.6.1.4.1.1751.1.48.1.1.1.1.2.1	Integer32	read-only	The number subnets managed by the server (i.e. configured), from which the server has issued at least one lease.
C32 dhcpServDhcpCountAcks	1.3.6.1.4.1.1751.1.48.1.1.1.1.4.8	Counter32	read-only	The number of DHCPACK (option 53 with value 5) packets sent.
C32 dhcpServDhcpCountDeclines	1.3.6.1.4.1.1751.1.48.1.1.1.1.4.4	Counter32	read-only	The number of DHCPDECLINE (option 53 with value 4) packets received.
C32 dhcpServDhcpCountDiscovers	1.3.6.1.4.1.1751.1.48.1.1.1.1.4.1	Counter32	read-only	The number of DHCPDISCOVER (option 53 with value 1) packets received.
C32 dhcpServDhcpCountDroppedNotServingSubnet	1.3.6.1.4.1.1751.1.48.1.1.1.1.4.11	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 dhcpServDhcpCountDroppedUnknownClient	1.3.6.1.4.1.1751.1.48.1.1.1.1.4.10	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.
dhcpServDhcpCounters	1.3.6.1.4.1.1751.1.48.1.1.1.1.4			Group of objects that count various DHCP Statistics.
C32 dhcpServDhcpCountInforms	1.3.6.1.4.1.1751.1.48.1.1.1.1.4.5	Counter32	read-only	The number of DHCPINFORM (option 53 with value 8) packets received.
C32 dhcpServDhcpCountInvalids	1.3.6.1.4.1.1751.1.48.1.1.1.1.4.6	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 dhcpServDhcpCountNacks	1.3.6.1.4.1.1751.1.48.1.1.1.1.4.9	Counter32	read-only	The number of DHCPNACK (option 53 with value 6) packets sent.
C32 dhcpServDhcpCountOffers	1.3.6.1.4.1.1751.1.48.1.1.1.1.4.7	Counter32	read-only	The number of DHCPOFFER (option 53 with value 2) packets sent.
C32 dhcpServDhcpCountReleases	1.3.6.1.4.1.1751.1.48.1.1.1.1.4.3	Counter32	read-only	The number of DHCPRELEASE (option 53 with value 7) packets received.
C32 dhcpServDhcpCountRequests	1.3.6.1.4.1.1751.1.48.1.1.1.1.4.2	Counter32	read-only	The number of DHCPREQUEST (option 53 with value 3) packets received.
dhcpServDhcpStatistics	1.3.6.1.4.1.1751.1.48.1.1.1.1.6			Group of objects that measure various DHCP statistics.
TIK dhcpServDhcpStatLastArrivalTime	1.3.6.1.4.1.1751.1.48.1.1.1.1.6.3	TimeTicks	read-only	The number of seconds since the last valid DHCP message was received by the server. Invalid messages do not cause this value to change. If no valid messages have been received, then this object contains a zero value.
NUM dhcpServDhcpStatMaxArrivalInterval	1.3.6.1.4.1.1751.1.48.1.1.1.1.6.2	DhcpServTimeInterval	read-only	The maximum amount of time between receiving two DHCP messages. A message is received at the server when the server is able to begin processing the message. This typically occurs immediately after the message is read into server memory. If no messages have been received, then this object contains a zero value.
NUM dhcpServDhcpStatMaxResponseTime	1.3.6.1.4.1.1751.1.48.1.1.1.1.6.5	DhcpServTimeInterval	read-only	The largest time interval measured as the difference between the arrival of a DHCP message at the server and the successful transmission of the response to that message. A message is received at the server when the server is able to begin processing the message. A message is transmitted after the server has no further use for the message. Note that the operating system may still have the message queued internally. The operating system queue time is not to be considered as part of the response time. Invalid messages do not cause this value to change. If no valid messages have been received, then this object contains a zero value.
NUM dhcpServDhcpStatMinArrivalInterval	1.3.6.1.4.1.1751.1.48.1.1.1.1.6.1	DhcpServTimeInterval	read-only	The minimum amount of time between receiving two DHCP messages. A message is received at the server when the server is able to begin processing the message. This typically occurs immediately after the message is read into server memory. If no messages have been received, then this object contains a zero value.
NUM dhcpServDhcpStatMinResponseTime	1.3.6.1.4.1.1751.1.48.1.1.1.1.6.4	DhcpServTimeInterval	read-only	The smallest time interval measured as the difference between the arrival of a DHCP message at the server and the successful transmission of the response to that message. A message is received at the server when the server is able to begin processing the message. A message is transmitted after the server has no further use for the message. Note that the operating system may still have the message queued internally. The operating system queue time is not to be considered as part of the response time. Invalid messages do not cause this value to change. If no valid messages have been received, then this object contains a zero value.
NUM dhcpServDhcpStatSumResponseTime	1.3.6.1.4.1.1751.1.48.1.1.1.1.6.6	DhcpServTimeInterval	read-only	The sum of the response time intervals in milli-seconds where a response time interval is measured as the difference between the arrival of a DHCP message at the server and the successful transmission of the response to that message. A message is received at the server when the server is able to begin processing the message. A message is transmitted after the server has no further use for the message. Note that the operating system may still have the message queued internally. The operating system queue time is not to be considered as part of the response time. Invalid messages do not cause this value to change. If no valid messages have been received, then this object contains a zero value.
NTF dhcpServerBadPacket	1.3.6.1.4.1.1751.1.48.1.1.1.0.5			The monitor has determined that the DHCP server has received a bad DHCP or Bootp packet.
NTF dhcpServerDropUnknownClient	1.3.6.1.4.1.1751.1.48.1.1.1.0.10			This trap is issued when the server drops a client message because the client MAC address is either in a MAC exclusion pool or is not in an inclusion pool.
NTF dhcpServerFailoverActive	1.3.6.1.4.1.1751.1.48.1.1.1.0.6			This trap is issued by the secondary server. It indicates a primary partner server is down and its scopes are now being served by this failover server.
NTF dhcpServerFailoverReturnedControl	1.3.6.1.4.1.1751.1.48.1.1.1.0.7			This trap is issued by the secondary server. It indicates that the failover server has returned control to its primary partner.
NTF dhcpServerPingResponseReceived	1.3.6.1.4.1.1751.1.48.1.1.1.0.11			This trap is issued when the server receives a ping response.
NTF dhcpServerReload	1.3.6.1.4.1.1751.1.48.1.1.1.0.3			The monitor has determined that the DHCP server has been reloaded.
NTF dhcpServerStarted	1.3.6.1.4.1.1751.1.48.1.1.1.0.1			The monitor has determined that the DHCP server has been started.
NTF dhcpServerStopped	1.3.6.1.4.1.1751.1.48.1.1.1.0.2			The monitor has determined that the DHCP server has been stopped.
NTF dhcpServerSubnetDepleted	1.3.6.1.4.1.1751.1.48.1.1.1.0.4			The monitor has determined that the DHCP server has run out of addresses in a subnet.
NTF dhcpServerSubnetThresholdDescent	1.3.6.1.4.1.1751.1.48.1.1.1.0.9			This trap is issued when subnet unavailable lease percentage falls below the descent threshold value.
NTF dhcpServerSubnetThresholdExceeded	1.3.6.1.4.1.1751.1.48.1.1.1.0.8			This trap is issued when subnet threshold is exceeded.
dhcpServFailover	1.3.6.1.4.1.1751.1.48.1.1.1.1.8			Objects that contain partner server info.
dhcpServFailoverEntry	1.3.6.1.4.1.1751.1.48.1.1.1.1.8.1.1		not-accessible	A logical row in the serverFailoverTable.
IP dhcpServFailoverPartnerAddr	1.3.6.1.4.1.1751.1.48.1.1.1.1.8.1.1.1	IpAddress	read-only	The IP address defining a partner server
C32 dhcpServFailoverPartnerPolltime	1.3.6.1.4.1.1751.1.48.1.1.1.1.8.1.1.4	Counter32	read-only	The last time there was a successfull communication with the partner server. This value is local time in seconds since some epoch.
INT dhcpServFailoverPartnerStatus	1.3.6.1.4.1.1751.1.48.1.1.1.1.8.1.1.3	INTEGER	read-only	Dhcp Server Partner status
INT dhcpServFailoverPartnerType	1.3.6.1.4.1.1751.1.48.1.1.1.1.8.1.1.2	INTEGER	read-only	Dhcp Server Failover server type
dhcpServFailoverTable	1.3.6.1.4.1.1751.1.48.1.1.1.1.8.1		not-accessible	A list of partner server.
dhcpServMib	1.3.6.1.4.1.1751.1.48.1.1.1			The Vendor Specific MIB module for entities implementing the server side of the Bootstrap Protocol (BOOTP) and the Dynamic Host Configuration protocol (DHCP) for Internet Protocol version 4 (IPv4).
dhcpServMibObjects	1.3.6.1.4.1.1751.1.48.1.1.1.1			DHCP Server MIB objects are all defined in this branch.
dhcpServMibTraps	1.3.6.1.4.1.1751.1.48.1.1.1.0			DHCP Server MIB traps.
IP dhcpServRangeEnd	1.3.6.1.4.1.1751.1.48.1.1.1.1.7.2.1.4	IpAddress	read-only	The IP address of the last address in the range. The value of range end must be greater than or equal to the value of range start.
dhcpServRangeEntry	1.3.6.1.4.1.1751.1.48.1.1.1.1.7.2.1		not-accessible	A logical row in the serverRangeTable.
G32 dhcpServRangeInUse	1.3.6.1.4.1.1751.1.48.1.1.1.1.7.2.1.5	Gauge32	read-only	The number of addresses in this range that are currently in use. This number includes those addresses whose lease has not expired and addresses which have been reserved (either by the server or through configuration).
G32 dhcpServRangeOutstandingOffers	1.3.6.1.4.1.1751.1.48.1.1.1.1.7.2.1.6	Gauge32	read-only	The number of outstanding DHCPOFFER messages for this range is reported with this value. An offer is outstanding if the server has sent a DHCPOFFER message to a client, but has not yet received a DHCPREQUEST message from the client nor has the server-specific timeout (limiting the time in which a client can respond to the offer message) for the offer message expired.
IP dhcpServRangeStart	1.3.6.1.4.1.1751.1.48.1.1.1.1.7.2.1.3	IpAddress	read-only	Start of Subnet Address, Index for Conceptual Tabl, Type IP address
IP dhcpServRangeSubnetAddr	1.3.6.1.4.1.1751.1.48.1.1.1.1.7.2.1.1	IpAddress	read-only	The IP address defining a subnet
IP dhcpServRangeSubnetMask	1.3.6.1.4.1.1751.1.48.1.1.1.1.7.2.1.2	IpAddress	read-only	The subnet mask (DHCP option 1) provided to any client offered an address from this range.
dhcpServRangeTable	1.3.6.1.4.1.1751.1.48.1.1.1.1.7.2		not-accessible	A list of ranges that are configured on this server.
INT dhcpServRangeType	1.3.6.1.4.1.1751.1.48.1.1.1.1.7.2.1.8	INTEGER	read-only	Dhcp Server Client Lease Type
G32 dhcpServRangeUnavailable	1.3.6.1.4.1.1751.1.48.1.1.1.1.7.2.1.7	Gauge32	read-only	Dhcp Server IP Addresses unavailable in a Subnet
G32 dhcpServRangeUnused	1.3.6.1.4.1.1751.1.48.1.1.1.1.7.2.1.9	Gauge32	read-only	The number of addresses in this range that are currently unused. This number includes those addresses whose lease has not expired and addresses which have been reserved (either by the server or through configuration).
dhcpServSubnetCounters	1.3.6.1.4.1.1751.1.48.1.1.1.1.2			Group of objects that count various subnet data values
dhcpServSystem	1.3.6.1.4.1.1751.1.48.1.1.1.1.1			Group of objects that are related to the overall system.
STR dhcpServSystemDescr	1.3.6.1.4.1.1751.1.48.1.1.1.1.1.1	DisplayString	read-only	A textual description of the server. This value should include the full name and version identification of the server. This string MUST contain only printable NVT ASCII characters.
G32 dhcpServSystemResetTime	1.3.6.1.4.1.1751.1.48.1.1.1.1.1.4	Gauge32	read-only	If the server has a persistent state (e.g., a process) and supports a `reset' operation (e.g., can be told to re-read configuration files), this value will be the seconds elapsed since the last time the name server was `reset.' For software that does not have persistence or does not support a `reset' operation, this value will be zero.
INT dhcpServSystemStatus	1.3.6.1.4.1.1751.1.48.1.1.1.1.1.2	INTEGER	read-only	Dhcp System Server Status
G32 dhcpServSystemUpTime	1.3.6.1.4.1.1751.1.48.1.1.1.1.1.3	Gauge32	read-only	If the server has a persistent state (e.g., a process), this value will be the seconds elapsed since it started. For software without persistant state, this value will be zero.
ipspg	1.3.6.1.4.1.1751.1.48
ipspgDHCP	1.3.6.1.4.1.1751.1.48.1.1
ipspgDhcpTrapEntry	1.3.6.1.4.1.1751.1.48.2.1.1		not-accessible	Information about the last alarm trap generated by the agent.
ipspgDhcpTrapTable	1.3.6.1.4.1.1751.1.48.2.1		not-accessible	The agent's table of IPSPG alarm information.
I32 ipspgDhcpTrClass	1.3.6.1.4.1.1751.1.48.2.1.1.6	Integer32	read-only	The Class number of the described IPSPG alarm.
I32 ipspgDhcpTrDiagId	1.3.6.1.4.1.1751.1.48.2.1.1.10	Integer32	read-only	An integer describing the diagnosis which triggered this IPSPG alarm.
INT ipspgDhcpTrId	1.3.6.1.4.1.1751.1.48.2.1.1.3	INTEGER	read-only	The application which generated this IPSPG alarm.
I32 ipspgDhcpTrIndex	1.3.6.1.4.1.1751.1.48.2.1.1.1	Integer32	read-only	Index into the IPSPG Alarm traps
INT ipspgDhcpTrPriority	1.3.6.1.4.1.1751.1.48.2.1.1.5	INTEGER	read-only	The priority level as set on the agent for this Calss and Type of trap.
C32 ipspgDhcpTrSequence	1.3.6.1.4.1.1751.1.48.2.1.1.2	Counter32	read-only	Counter of the number of IPSPG alarm traps since the agent was last initialized
STR ipspgDhcpTrSuspect	1.3.6.1.4.1.1751.1.48.2.1.1.9	DisplayString	read-only	An ASCII string describing the host which caused the IPSPG alarm.
STR ipspgDhcpTrText	1.3.6.1.4.1.1751.1.48.2.1.1.4	DisplayString	read-only	An ASCII string describing the IPSPG alarm condition/cause.
C32 ipspgDhcpTrTime	1.3.6.1.4.1.1751.1.48.2.1.1.8	Counter32	read-only	The time that the condition or event occurred which caused generation of this alarm. This value is given in seconds since 00:00:00 Greenwich mean time (GMT) January 1, 1970.
I32 ipspgDhcpTrType	1.3.6.1.4.1.1751.1.48.2.1.1.7	Integer32	read-only	The type number of the described IPSPG alarm.
ipspgDNS	1.3.6.1.4.1.1751.1.48.1.2
ipspgServices	1.3.6.1.4.1.1751.1.48.1
ipspgTrap	1.3.6.1.4.1.1751.1.48.2
lucent	1.3.6.1.4.1.1751
mibs	1.3.6.1.4.1.1751.2
products	1.3.6.1.4.1.1751.1

RFC description

Vendor-specific DHCP and BOOTP server MIB for managing IPv4 dynamic host configuration protocol implementation.

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