ALTIGA-DHCP-SERVER-STATS-MIB

All MIBs › ALTIGA-DHCP-SERVER-STATS-MIB

Organization: Cisco Systems, Inc.

Last Updated: 2002-09-05

Category: VPN and Security, Vendor: Altiga

Description: Altiga (Cisco VPN 3000) DHCP server statistics MIB for monitoring address pool leases and server request counts.

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What Is ALTIGA-DHCP-SERVER-STATS-MIB?

This is an Altiga Networks (acquired by Cisco, forming the Cisco VPN 3000 Concentrator series) MIB that models statistics for the device's built-in DHCP server function. It exposes counters and state for DHCP address-pool usage and protocol message activity, including active/maximum lease counts, DHCPDISCOVER/OFFER/ACK/NAK message counters, request timeouts, and a per-session lease table with client IP assignment. Although focused on network-service statistics rather than physical hardware, it directly supports monitoring the software health of the DHCP service, tracking whether the lease pool is nearing exhaustion, whether request timeouts are climbing, and per-session lease status. It has no significant external MIB dependency, functioning as a self-contained Altiga/Cisco enterprise statistics MIB. It's typically deployed on Cisco VPN 3000 series concentrators providing DHCP services to VPN client pools. Engineers can download the ALTIGA-DHCP-SERVER-STATS-MIB file directly to load it into their MIB browser.

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

Cisco (Altiga) VPN 3000 Series Concentrator

Monitoring Examples

An admin would poll alDhcpServerStatsActiveLeases against alDhcpServerStatsMaximumLeases to detect impending address-pool exhaustion, and check alDhcpServerStatsReqTimeouts for a rising trend suggesting DHCP request failures. Walking alDhcpServerStatsSessTable/alDhcpServerStatsSessEntry by alDhcpServerStatsSessId reveals which alDhcpServerStatsSessIpAddr values are currently leased. A spike in alDhcpServerStatsNaksSent relative to alDhcpServerStatsAcksSent would indicate many clients being rejected, pointing to pool misconfiguration.

What Can Be Monitored

active vs maximum DHCP leases
DHCP discover/offer/ack/nak counts
DHCP request timeouts
per-session lease assignments
DHCP server session table status

Imported Objects

From ALTIGA-GLOBAL-REG

alDhcpServerMibModule

OBJECT-IDENTITY

From ALTIGA-MIB

alDhcpServerGroup	OBJECT-IDENTITY
alStatsDhcpServer	OBJECT-IDENTITY

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Gauge32
Integer32
IpAddress
MODULE-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

DisplayString
MacAddress
RowStatus

How to Use in IPNetwork Monitor

Example using alDhcpServerStatsMaximumLeases OID:

Select a Cisco (Altiga) VPN concentrator 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 alDhcpServerStatsMaximumLeases into the Find box to locate it in the OID tree, then select it and click OK. The number of leases that were active at any one time. 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
altigaDhcpServerStatsMibModule	1.3.6.1.4.1.3076.1.1.42.2			The Altiga DHCP Statistics Server MIB models counters and objects that are of management interest for DHCP. Acronyms The following acronyms are used in this document: DHCP: Dynamic Host Configuration Protocol MIB: Management Information Base
altigaDhcpServerStatsMibConformance	1.3.6.1.4.1.3076.1.1.42.2.1
altigaDhcpServerStatsMibCompliances	1.3.6.1.4.1.3076.1.1.42.2.1.1
altigaDhcpServerStatsMibCompliance	1.3.6.1.4.1.3076.1.1.42.2.1.1.1			The compliance statement for agents which implement the Altiga DHCP Server Statistics MIB.
altigaDhcpServerStatsGroup	1.3.6.1.4.1.3076.2.1.1.1.37.2			The objects for the DHCP Server statistics.
alStatsDhcpServerGlobal	1.3.6.1.4.1.3076.2.1.2.37.1
G32 alDhcpServerStatsActiveLeases	1.3.6.1.4.1.3076.2.1.2.37.1.1	Gauge32	read-only	The number of active DHCP leases.
C32 alDhcpServerStatsMaximumLeasesEx	1.3.6.1.4.1.3076.2.1.2.37.1.2	Counter32	read-only	The number of leases that were active at any one time.
C32 alDhcpServerStatsDiscoversRcvd	1.3.6.1.4.1.3076.2.1.2.37.1.3	Counter32	read-only	The number of transmitted DHCPDISCOVER messages.
C32 alDhcpServerStatsOffersSent	1.3.6.1.4.1.3076.2.1.2.37.1.4	Counter32	read-only	The number of received DHCPOFFER messages.
C32 alDhcpServerStatsAcksSent	1.3.6.1.4.1.3076.2.1.2.37.1.5	Counter32	read-only	The number of received original (i.e. in the REQUESTING state) DHCPACK messages.
C32 alDhcpServerStatsNaksSent	1.3.6.1.4.1.3076.2.1.2.37.1.6	Counter32	read-only	The number of received original (i.e. in the REQUESTING state) DHCPNAK messages.
C32 alDhcpServerStatsReqTimeouts	1.3.6.1.4.1.3076.2.1.2.37.1.7	Counter32	read-only	The number of request timeouts that occurred.
alDhcpServerStatsSessTable	1.3.6.1.4.1.3076.2.1.2.37.2		not-accessible	List of active sessions.
alDhcpServerStatsSessEntry	1.3.6.1.4.1.3076.2.1.2.37.2.1		not-accessible	An entry in the alDhcpServerStatsSessTable.
ROW alDhcpServerStatsSessRowStatus	1.3.6.1.4.1.3076.2.1.2.37.2.1.1	RowStatus	read-write	The status of this row. This can be used to delete the lease, but can not be used to create one.
I32 alDhcpServerStatsSessId	1.3.6.1.4.1.3076.2.1.2.37.2.1.2	Integer32	read-only	The unique DHCP session ID used as the index for this row.
IP alDhcpServerStatsSessIpAddr	1.3.6.1.4.1.3076.2.1.2.37.2.1.3	IpAddress	read-only	The IP address of the remote client.
G32 alDhcpServerStatsSessLeaseExpire	1.3.6.1.4.1.3076.2.1.2.37.2.1.4	Gauge32	read-only	The remaining seconds until the current lease expires.
MAC alDhcpServerStatsSessMacAddr	1.3.6.1.4.1.3076.2.1.2.37.2.1.5	MacAddress	read-only	MAC address of the client.
STR alDhcpServerStatsSessHostName	1.3.6.1.4.1.3076.2.1.2.37.2.1.6	DisplayString	read-only	Host Name of the client.

RFC description

Vendor-specific MIB for Altiga DHCP server statistics and monitoring; tracks DHCP lease allocation, releases, declines, and server performance metrics.

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Download ALTIGA-DHCP-SERVER-STATS-MIB