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A MIB (Management Information Base) is a structured document that defines the data a device exposes over SNMP — things like interface counters, system uptime, or CPU load. Each module declares a set of named objects, organized into a tree.

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An OID (Object Identifier) is the numeric address of one piece of data in a MIB — a dotted sequence like 1.3.6.1.2.1.1.1, read from the root of a global tree down to one specific object. Names are easier to read; OIDs are what's actually sent over the wire.

Try it: sysDescr (1.3.6.1.2.1.1.1) →

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HH3C-FC-NAME-SERVER-MIB

12 objects

This MIB module is intended for the management of Fibre Channel (FC) Name Server.

Imported Objects

HH3C-FC-TC-MIB	Hh3cFcNameId
HH3C-VSAN-MIB	hh3cSan hh3cVsanIndex
SNMPv2-SMI	MODULE-IDENTITY NOTIFICATION-TYPE OBJECT-TYPE
SNMPv2-TC	TruthValue

OID	Name	Access	Status	Description
1.3.6.1.4.1.25506.2.127.10	Identityhh3cFcNameServer			This MIB module is intended for the management of Fibre Channel (FC) Name Server.
1.3.6.1.4.1.25506.2.127.10.1	Nodehh3cFcNameServerMibObjects
1.3.6.1.4.1.25506.2.127.10.1.1	Nodehh3cFcNsNotification
1.3.6.1.4.1.25506.2.127.10.1.1.0	Nodehh3cFcNsNotificationPrefix
1.3.6.1.4.1.25506.2.127.10.1.1.0.1	Notificationhh3cFcNsPortLoginNotify		current	This notification will be generated when an entry is added to the Name Server database by Nx_Port locally logging in.
1.3.6.1.4.1.25506.2.127.10.1.1.0.2	Notificationhh3cFcNsPortLogoutNotify		current	This notification will be generated when an entry is deleted from the Name Server database by Nx_Port locally logging out.
1.3.6.1.4.1.25506.2.127.10.1.1.1	Nodehh3cFcNsNotificationSwitch
1.3.6.1.4.1.25506.2.127.10.1.1.1.1	Scalarhh3cFcNsPortLoginNotifyEnable	read-write	current	This object is used to determine whether hh3cFcNsPortLoginNotify will be generated for Nx_Port locally logging in.
1.3.6.1.4.1.25506.2.127.10.1.1.1.2	Scalarhh3cFcNsPortLogoutNotifyEnable	read-write	current	This object is used to determine whether hh3cFcNsPortLogoutNotify will be generated for Nx_Port locally logging out.
1.3.6.1.4.1.25506.2.127.10.1.1.2	Nodehh3cFcNsObjsForNotification
1.3.6.1.4.1.25506.2.127.10.1.1.2.1	Scalarhh3cFcNsLocalSwitchWWN	accessible-for-notify	current	The world wide name of the local switch.
1.3.6.1.4.1.25506.2.127.10.1.1.2.2	Scalarhh3cFcNsFloginPortWWN	accessible-for-notify	current	The world wide name of the local logged-in Nx_Port.