ZHONE-COM-IP-DHCP-CLIENT-MIB

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Organization: Zhone Technologies, Inc.

Last Updated: 2001-06-28

Category: Zhone Technologies CPE and Access

Description: Manages Zhone Technologies DHCP client lease state, server address, and renewal timer configuration.

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What Is ZHONE-COM-IP-DHCP-CLIENT-MIB?

ZHONE-COM-IP-DHCP-CLIENT-MIB is a Zhone Technologies enterprise MIB that models the DHCP client function on Zhone broadband access devices, covering the client's lease state, the DHCP server address it obtained a lease from, and renewal timer configuration. It belongs to the IP configuration/network-management category rather than hardware environmental monitoring. Its monitoring value is software/service status: an operator can confirm whether the device's management interface has successfully obtained and renewed a DHCP lease, identify which DHCP server it is bound to, and check renewal timer values to anticipate lease renewal or detect a device stuck without a valid IP address. No specific objects were supplied in the input beyond the general module description, though it follows the standard DHCP client state model. It is deployed on Zhone Technologies broadband access/DSL equipment that obtains its management IP address via DHCP. Network engineers evaluating or troubleshooting this functionality can download the ZHONE-COM-IP-DHCP-CLIENT-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in ZHONE-COM-IP-DHCP-CLIENT-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

Zhone Technologies broadband/DSL access device

Monitoring Examples

No specific object names were supplied for this module, so a concrete polling example cannot be responsibly constructed; based on its description, an operator would poll the device's DHCP lease state, bound server address, and renewal timer to confirm the management interface has a valid, current DHCP lease and to anticipate renewal or diagnose a failed lease acquisition.

What Can Be Monitored

DHCP lease state
DHCP server address
lease renewal timer

Imported Objects

From IF-MIB

ifIndex

OBJECT-TYPE

From SNMP-FRAMEWORK-MIB

SnmpAdminString

From SNMPv2-SMI

Counter32
Gauge32
IpAddress
MODULE-IDENTITY
OBJECT-IDENTITY
OBJECT-TYPE
Unsigned32

From Zhone

zhoneIp	OBJECT-IDENTITY
zhoneModules	OBJECT-IDENTITY
zhoneShelfIndex	OBJECT-TYPE
zhoneSlotIndex	OBJECT-TYPE

From ZHONE-COM-IP-REC-MIB

ipInterfaceEntry

OBJECT-TYPE

From Zhone-TC

ZhoneAdminString

How to Use in IPNetwork Monitor

Example using dhcpClientErrors OID:

Select a Zhone Technologies broadband/DSL access device (DHCP-client lease/server-binding status) 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 dhcpClientErrors 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. It reports the number of errors that DHCP client has encountered. 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 between polls, since a rising count of errors, failures, or discards often points to a real underlying problem. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
dhcpClient	1.3.6.1.4.1.5504.4.1.1			DHCP Client Resource.
dhcpClientResourceTable	1.3.6.1.4.1.5504.4.1.1.1		not-accessible	This table contains the configuration information for the DHCP clients on this system.
dhcpClientResourceEntry	1.3.6.1.4.1.5504.4.1.1.1.1		not-accessible	A row in the DHCP Client Table. This table is indexed by the shelf and card on which the client runs. These indices are external to this MIB module.
U32 dhcpOfferTimeout	1.3.6.1.4.1.5504.4.1.1.1.1.1	Unsigned32	read-write	Interval to get additional DHCP offers.
U32 dhcpDefaultLease	1.3.6.1.4.1.5504.4.1.1.1.1.2	Unsigned32	read-write	Default value for requested lease length. This value should not be less than dhcpMinLease. Maximum allowed value is one week (604800 seconds).
U32 dhcpMinLease	1.3.6.1.4.1.5504.4.1.1.1.1.3	Unsigned32	read-write	Minimum accepted lease length. This value should not be greater than dhcpDefaultLease. Maximum allowed value is 1 week (604,800 seconds).
C32 dhcpClientErrorsEx	1.3.6.1.4.1.5504.4.1.1.1.1.4	Counter32	read-only	Number of errors that DHCP client has encountered.
G32 dhcpAvgTimeForLease	1.3.6.1.4.1.5504.4.1.1.1.1.5	Gauge32	read-only	Average time to obtain a lease.
dhcpInterfacesTable	1.3.6.1.4.1.5504.4.1.1.2		not-accessible	Interface-specific DHCP configuration and state. This table augments the IpInterfaceTable in comIpRec.mib.
dhcpInterfacesEntry	1.3.6.1.4.1.5504.4.1.1.2.1		not-accessible	Rows will be added as network interfaces are added.
STR dhcpInterfaceServerName	1.3.6.1.4.1.5504.4.1.1.2.1.1	SnmpAdminString	read-only	Name of the DHCP offering server.
U32 dhcpInterfaceRenew	1.3.6.1.4.1.5504.4.1.1.2.1.2	Unsigned32	read-only	Seconds until DHCP renewal occurs
U32 dhcpInterfaceRebind	1.3.6.1.4.1.5504.4.1.1.2.1.3	Unsigned32	read-only	Seconds until DHCP rebind occurs
STR dhcpInterfaceBootFile	1.3.6.1.4.1.5504.4.1.1.2.1.4	SnmpAdminString	read-only	Name of the bootfile.
IP dhcpInterfaceTftp	1.3.6.1.4.1.5504.4.1.1.2.1.5	IpAddress	read-only	Tftp address for the current interface.
STR dhcpInterfaceHostname	1.3.6.1.4.1.5504.4.1.1.2.1.6	ZhoneAdminString	read-only	Name of the host. This will not be a fully-qualified hostname.
STR dhcpInterfaceDomainName	1.3.6.1.4.1.5504.4.1.1.2.1.7	SnmpAdminString	read-only	Name of the domain.
OCT dhcpInterfaceVendorClassId	1.3.6.1.4.1.5504.4.1.1.2.1.8	OCTET STRING	read-only	Vendor Class ID.
OCT dhcpInterfaceDhcpClientId	1.3.6.1.4.1.5504.4.1.1.2.1.9	OCTET STRING	read-write	DHCP Client Id.
INT dhcpInterfaceState	1.3.6.1.4.1.5504.4.1.1.2.1.10	INTEGER	read-write	Current state of the lease. The user can only set init, verify and release.
dnsTable	1.3.6.1.4.1.5504.4.1.1.3		not-accessible	list of dns servers for the current interface
dnsEntry	1.3.6.1.4.1.5504.4.1.1.3.1		not-accessible	list of dns servers for the current interface
IP dnsIpAddress	1.3.6.1.4.1.5504.4.1.1.3.1.1	IpAddress	read-only	IP Address of DNS server
routersTable	1.3.6.1.4.1.5504.4.1.1.4		not-accessible	list of routers servers for the current interface
routersEntry	1.3.6.1.4.1.5504.4.1.1.4.1		not-accessible	list of routers server for the current interface
IP routersIpAddress	1.3.6.1.4.1.5504.4.1.1.4.1.1	IpAddress	read-only	IP Address of routers
comIpDhcpClient	1.3.6.1.4.1.5504.6.51			DHCP Client MIB using SNMPv2 SMI. IP Software Minneapolis, MN

RFC description

DHCP client resource configuration and status management for Zhone devices.

Start monitoring Zhone Technologies broadband/DSL access device (DHCP-client lease/server-binding status) 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.

Download ZHONE-COM-IP-DHCP-CLIENT-MIB