USR-FA-MIB

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

All MIBs › USR-FA-MIB

Organization: CommWorks Corporation, a 3Com Company

Last Updated: 2002-08-23

Category: CommWorks/3Com Access Equipment

Description: Manages foreign agent functions and mobile node bindings for CommWorks/3Com Mobile IP support.

Start monitoring vendor-neutral, standards-based MIB, any SNMPv3-capable network device (SNMP engine identity/boot/clock 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.

What Is USR-FA-MIB?

USR-FA-MIB is a private enterprise MIB from the commWorks/3Com family defining managed objects for the Mobile IP Foreign Agent function, used to manage mobile-node registration bindings and roaming behavior on 3Com/US Robotics wireless access infrastructure. Its objects (such as the visible usrFAAllowMobileAddrInReg setting) govern configuration policy for how the foreign agent handles mobile node address registration, rather than exposing broad device health telemetry. Given the very limited object set surfaced, this MIB is oriented toward Mobile IP protocol/configuration control rather than hardware sensor data like temperature or power; it would primarily be used to confirm the foreign agent's registration-handling configuration is correctly enabled or disabled. It depends conceptually on the IETF Mobile IP (RFC 2002 family) standards that define foreign agent behavior, and likely on a base USR-MIB framework it extends. It is typically deployed on 3Com/US Robotics/CommWorks mobile wireless access servers acting as a Mobile IP foreign agent for roaming mobile nodes. Network engineers evaluating or troubleshooting this functionality can download the USR-FA-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in USR-FA-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

  • 3Com/US Robotics/CommWorks Mobile IP foreign agent access servers

Monitoring Examples

An admin managing Mobile IP roaming policy would check usrFAAllowMobileAddrInReg to confirm whether the foreign agent permits a mobile node to include its own care-of address in registration requests, a setting that affects how roaming devices attach through this access point. Because the sample object set here is minimal, this MIB is best understood as a small configuration-control extension rather than a broad monitoring surface. There is no evidence in the available objects of counters for interface traffic or hardware sensors.

What Can Be Monitored

  • mobile node address registration policy setting
Imported Objects

From SNMPv2-SMI

Counter32
Integer32
IpAddress
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DateAndTime
DisplayString
RowStatus
TruthValue

From USR-DEFINITIONS-MIB

UsrConfigStatus
UsrDisplayIntAsHex
UsrSPI
UsrSecretDisplay
commonOBJECT-IDENTITY

How to Use in IPNetwork Monitor

Example using usrFATotRegReqRec OID:

Select a 3Com/US Robotics/CommWorks Mobile IP foreign agent access server (mobile-node registration policy 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 usrFATotRegReqRec into the Find box to locate it in the OID tree, then select it and click OK. It reports the total number of Registration Requests Received. 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

RFC description

Manages wireless foreign agent configuration, MIP authentication, and mobile node registration statistics.

Start monitoring 3Com/US Robotics/CommWorks Mobile IP foreign agent access servers (mobile-node registration policy 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 USR-FA-MIB