CISCO-NS-MIB

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsCISCO-NS-MIB

Organization: Cisco Systems Inc.

Last Updated: 2004-08-30

Category: Cisco Devices, Fibre Channel and Storage

Description: Manages the Fibre Channel Name Server database and zone membership on Cisco MDS series SAN switches.

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 CISCO-NS-MIB?

CISCO-NS-MIB is a Cisco-specific MIB implemented on Cisco MDS series Fibre Channel storage-area-network (SAN) switches, providing management access to the Fibre Channel Name Server (NS) as defined by the FC-GS3 standard. It exposes fabric-wide data about which devices are registered in the name server, including port identifiers, port/node World Wide Names, class-of-service capabilities, and node IP addresses for each attached FC end device. Rather than hardware health, CISCO-NS-MIB SNMP monitoring focuses on software/fabric-service status: tracking name-server database size (row counts), detecting when the table last changed, and watching proxy port registrations that indicate name-server communication across an inter-switch link. It builds directly on the FC-GS3 Name Server specification and the broader Cisco Fibre Channel MIB family, so it is typically deployed alongside other Cisco FC/zoning MIBs rather than standalone. It is used in Fibre Channel SAN environments to verify that hosts and storage devices are correctly registering and discoverable through the fabric's name service.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-NS-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 MDS 9718 Multilayer Director — current high-end Fibre Channel SAN director chassis, actively supported with Supervisor-4 modules under NX-OS 9.x

Monitoring Examples

An administrator would poll fcNameServerTable/fcNameServerEntry, keyed by fcNameServerPortIdentifier, to see each registered device's fcNameServerPortName, fcNameServerNodeName, and fcNameServerClassOfSvc, confirming a host bus adapter or storage array is properly logged into the fabric. Watching fcNameServerTableLastChange and fcNameServerNumRows over time reveals unexpected churn (devices dropping in and out) or a device that fails to register after a link flap. The fcNameServerProxyPortTable/fcNameServerProxyPortName objects show which switch ports are acting as name-server proxies between interconnected VSANs or fabrics, useful for diagnosing multi-switch name-server propagation problems.

What Can Be Monitored

  • Fibre Channel name server device registrations
  • port/node World Wide Names
  • name server table change/row count
  • name server proxy port status
  • class of service per device
Imported Objects

From CISCO-SMI

ciscoMgmtOBJECT-IDENTITY

From CISCO-ST-TC

FcAddressId
FcClassOfServices
FcNameId
FcNameIdOrZero

From CISCO-VSAN-MIB

notifyVsanIndexOBJECT-TYPE
vsanIndexOBJECT-TYPE

From SNMP-FRAMEWORK-MIB

SnmpAdminString

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE

From SNMPv2-TC

TEXTUAL-CONVENTION
TimeStamp
TruthValue

How to Use in IPNetwork Monitor

Example using fcNameServerNumRows OID:

Select a Cisco MDS 9718 Multilayer Director 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 fcNameServerNumRows into the Find box to locate it in the OID tree, then select it and click OK. It reports the number of Fibre Channel Nx_Ports currently registered with this switch's name server, fabric-wide. 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 an Integer32-type OID, Value bounds is the most useful condition here — trigger an alert if the count drops well below its normal baseline, which would indicate hosts or storage ports have unexpectedly logged out of the fabric. Click Finish to create the monitor; you can adjust any parameter later.
OIDs

RFC description

Cisco vendor-private MIB for management of Nexus Switch (NS) platform-specific features and hardware.

Start monitoring Cisco MDS Fibre Channel SAN switches (Name Server) 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 CISCO-NS-MIB