Description:
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semaphore OBJECT-TYPE
SYNTAX IpAddress
ACCESS read-write
STATUS obsolete
DESCRIPTION
"This object allows a set of objects to be locked.
The lock is only assured by the 'cooperation' of
other management entities; they must wait until
the lock is cleared (to value zero) prior to
setting the lock. When this object is set to a
management entity's IP address, if no other
management entity has previously set the lock, the
set will succeed. Otherwise, an error (BadValue)
will be returned. It is the responsibility of the
owning management entity to clear the lock when
the transactions complete. To protect against a
management entity failure during a locked
transaction, the agent is NOT responsible for
verifying which management entity is performing
transactions on locked objects; thus, any
management entity can clear this object at any
time. The agent does not do anything with this
object except disallow multiple sets of different
IP addresses (unless the object has been cleared
to zero). This means management entities can use
this for locking any valid transactions on defined
sets of objects. This object can also be used on
IPX networks by specifying the low 4 bytes of the
station address for the IpAddress.
This object is now obsolete. Individual groups of
objects now maintain their own locking mechanisms."
-- INDEX { INTEGER (1..3)
-- pollResponse(1), - lock pollResponse object
-- mapObjects(2), - lock mapAddress,
-- mapState, and mapPort
-- eventGroup(3) - lock all objects in
-- event group
-- }
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iso(1)
