EdgeSwitch-DHCPCLIENT-PRIVATE-MIB

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Organization: Broadcom Inc

Last Updated: 2011-01-26

Category: Protocol: DHCP, Vendor: EdgeSwitch/Ubiquiti

Description: Ubiquiti EdgeSwitch DHCP client MIB for managing DHCP client configuration and lease status on switch interfaces.

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What Is EdgeSwitch-DHCPCLIENT-PRIVATE-MIB?

EdgeSwitch-DHCPCLIENT-PRIVATE-MIB is a Ubiquiti Networks proprietary MIB module for the EdgeSwitch product line, covering configuration and status of the switch's own DHCP client function used to obtain its management IP address. It exposes objects related to DHCP client configuration and lease status on the switch's interfaces, indicating how the device itself acquires network addressing rather than how it serves DHCP to others. From a monitoring standpoint it is primarily a software/configuration-status MIB: administrators can check whether the DHCP client is enabled on a given interface and confirm current lease information to catch address-renewal failures that would otherwise cause the switch to become unreachable. It likely depends on the standard IF-MIB for identifying which interface holds a given DHCP client lease. It is typically deployed on Ubiquiti EdgeSwitch managed switches in small-to-midsize network deployments where the switch obtains its management address dynamically via DHCP. Engineers can download the EdgeSwitch-DHCPCLIENT-PRIVATE-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in EdgeSwitch-DHCPCLIENT-PRIVATE-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

Ubiquiti EdgeSwitch managed switches

Monitoring Examples

No sample object names were provided for this module, so specific table or object identifiers cannot be cited with confidence. In general terms, an administrator would expect to poll per-interface DHCP client enable/status objects and current lease details to confirm the switch has successfully obtained and renewed its management IP address. A failed or expired lease reported through this MIB would explain unexpected loss of management connectivity to the switch.

What Can Be Monitored

DHCP client enable status per interface
current DHCP lease state
lease renewal status

Imported Objects

From EdgeSwitch-REF-MIB

fastPath

OBJECT-IDENTITY

From IF-MIB

InterfaceIndex

From RFC1213-MIB

DisplayString

From SNMPv2-SMI

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

How to Use in IPNetwork Monitor

Example using agentdhcp4ClientRetryCount OID:

Select an Ubiquiti EdgeSwitch managed switch (DHCP client) 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 agentdhcp4ClientRetryCount 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 times the DHCP Client sends a DHCP REQUEST message before the server responds . 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
fastPathDHCPClientPrivate	1.3.6.1.4.1.4413.1.1.100			The Ubiquiti Private MIB for EdgeSwitch DHCP Client
agentdhcp4ClientLeaseParameters	1.3.6.1.4.1.4413.1.1.100.1
agentdhcp4ClientLeaseParametersTable	1.3.6.1.4.1.4413.1.1.100.1.1		not-accessible	Displays DHCP Client Lease Information.
agentdhcp4ClientLeaseParametersEntry	1.3.6.1.4.1.4413.1.1.100.1.1.1		not-accessible	Information about a table entry.
NUM agentdhcp4ClientInterfaceIndex	1.3.6.1.4.1.4413.1.1.100.1.1.1.1	InterfaceIndex	not-accessible	The Interface index on which the IP address was leased by the DHCP Server.
IP agentdhcp4ClientIpAddress	1.3.6.1.4.1.4413.1.1.100.1.1.1.2	IpAddress	read-only	The IP Address leased by the DHCP Server .
IP agentdhcp4ClientSubnetMask	1.3.6.1.4.1.4413.1.1.100.1.1.1.3	IpAddress	read-only	The Subnet mask of the IP Address leased by the DHCP Server .
IP agentdhcp4ClientDhcpServerAddress	1.3.6.1.4.1.4413.1.1.100.1.1.1.4	IpAddress	read-only	The IP Address of the DHCP Server that leased the IP Address .
INT agentdhcp4ClientState	1.3.6.1.4.1.4413.1.1.100.1.1.1.5	INTEGER	read-only	The State of the DHCP Client on this interface .
STR agentdhcp4ClientTransactionID	1.3.6.1.4.1.4413.1.1.100.1.1.1.6	DisplayString	read-only	The transaction ID of the DHCP Client .
TIK agentdhcp4ClientLeaseTime	1.3.6.1.4.1.4413.1.1.100.1.1.1.7	TimeTicks	read-only	The time remaining since the IP address is leased by the DHCP Server.It is displayed in days, hours, minutes and seconds.
TIK agentdhcp4ClientRenewTime	1.3.6.1.4.1.4413.1.1.100.1.1.1.8	TimeTicks	read-only	The time remaining to send the next DHCP Renew Request by DHCP Client to renew the leased IP address. It is displayed in days, hours, minutes and seconds.
TIK agentdhcp4ClientRebindTime	1.3.6.1.4.1.4413.1.1.100.1.1.1.9	TimeTicks	read-only	The time remaining to start the DHCP Rebind process. It is displayed in days, hours, minutes and seconds.
C32 agentdhcp4ClientRetryCountEx	1.3.6.1.4.1.4413.1.1.100.1.1.1.10	Counter32	read-only	The number of times the DHCP Client sends a DHCP REQUEST message before the server responds .

RFC description

EdgeSwitch DHCP client configuration and monitoring MIB for managing DHCP lease parameters on Ubiquiti switch interfaces.

Start monitoring Ubiquiti EdgeSwitch managed switch (DHCP client) 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 EdgeSwitch-DHCPCLIENT-PRIVATE-MIB