T11-FC-FABRIC-ADDR-MGR-MIB

MIB Reference — IPNetwork Monitor · Updated September 09, 2026

All MIBsT11-FC-FABRIC-ADDR-MGR-MIB

Organization: T11

Last Updated: 2006-03-02

Category: Fibre Channel and Storage

Description: Provides management of Fibre Channel Fabric Address Manager functionality, managing fabric configuration, domain IDs, and address allocation.

IPNetwork Monitor uses several OIDs from this MIB in network discovery and polling the applicable devices. Start monitoring T11-FC-FABRIC-ADDR-MGR-MIB with a free 30-day trial of IPNetwork Monitor.

What Is T11-FC-FABRIC-ADDR-MGR-MIB?

T11-FC-FABRIC-ADDR-MGR-MIB is a vendor-neutral standards-based MIB defined by the T11 Fibre Channel standards body (FC-SW-3/FC-FS) that manages the Fabric Address Manager functionality responsible for acquiring domain IDs and allocating Fibre Channel identifiers within an FC fabric. It exposes configuration data (configured domain ID and type, auto-reconfigure and contiguous-allocation flags, switch priority) alongside operational/state data (principal and local switch WWNs, assigned area ID list, and granted FC IDs) and a notifications branch for fabric address-manager events. Its monitoring value is primarily software/protocol-state oriented: administrators watch t11FamPrincipalSwitchWwn to confirm which switch currently holds the principal-switch role, t11FamConfigDomainId/t11FamGrantedFcIds to verify domain ID assignment succeeded as configured, and the notifications branch to catch address-manager faults such as a failed domain ID acquisition or fabric reconfiguration event. It is explicitly built on the T11 FC-SW-3 and FC-FS Fibre Channel standards, making it dependent on that broader family of FC fabric MIBs and specifications. It is deployed on Fibre Channel switches within a SAN fabric, running on the switch designated as, or contending to be, the Principal Switch. Engineers implementing or auditing this functionality typically reference the T11-FC-FABRIC-ADDR-MGR-MIB RFC/standard documentation for the authoritative specification.

IPNetwork Monitor allows you to monitor SNMP objects defined in T11-FC-FABRIC-ADDR-MGR-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

  • vendor-neutral, standards-based MIB, not tied to a specific manufacturer
  • Fibre Channel SAN switch

Monitoring Examples

An administrator would poll t11FamTable, indexed by t11FamFabricIndex, to check t11FamPrincipalSwitchWwn and confirm the expected switch holds principal-switch status, then check t11FamConfigDomainId versus t11FamGrantedFcIds to verify the switch was actually granted the domain ID it requested. If t11FamAutoReconfigure is enabled, the notifications branch t11FamNotifications would be watched for an unexpected fabric reconfiguration event, which could indicate an address-manager conflict or a new switch merge disrupting the fabric.

What Can Be Monitored

  • principal switch identity (WWN)
  • configured and granted domain IDs
  • granted Fibre Channel IDs
  • auto-reconfigure/contiguous-allocation settings
  • fabric address-manager fault notifications
Imported Objects

From FC-MGMT-MIB

FcDomainIdOrZero
FcNameIdOrZero
fcmInstanceIndexOBJECT-TYPE
fcmSwitchIndexOBJECT-TYPE

From IF-MIB

ifIndexOBJECT-TYPE

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Gauge32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
Unsigned32
mib-2

From SNMPv2-TC

RowStatus
TEXTUAL-CONVENTION
TruthValue

From T11-TC-MIB

T11FabricIndex

How to Use in IPNetwork Monitor

Example using t11FamGrantedFcIds OID:

Select a Fibre Channel SAN switch 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 t11FamGrantedFcIds 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 total number of Fibre Channel Address Identifiers granted (for local use, i.e., with a particular switch's Domain_ID) by the Fabric Address Manager on that switch. 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 Fibre Channel fabric address management functionality including domain ID acquisition and identifier management in FC switches.

Start monitoring Fibre Channel SAN switches 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 T11-FC-FABRIC-ADDR-MGR-MIB