SNMP Configuration and Management Manual

Ethernet Subagent
SNMP Configuration and Management Manual—424777-006
14-18
State Object/Resource Object Pairs
State Transitions for Resource Objects
Figure 14-2 illustrates how resource objects move between states. Note that:
•
Setting a “Connected” object to “Disabled” forces a transition through the
“Disconnected” state. This permits the orderly shutdown of the resource and the
generation of a state change event for the disconnected state.
•
“Connect Success,” “Connect Failure,” and “Resource Fault” all relate to actions
and events detected by the subagent. Internally generated transitions produce an
EMS event indicating the state change, as described in Event Message
Descriptions on page 14-33.
•
An SNMP general error is returned if the Ethernet Subagent receives a Set
“Enabled” request against a state object that is in the “Connected” state.
Modifying the Value of a Resource Object
To modify the value of a resource object:
1. Set the value of the resource object’s associated state object to “Disabled.”
2. Set the resource object to a new value.
Figure 14-2. Ethernet Subagent Resource Object States
Resource available
Set "Disabled"
x
Set "Enabled"
Resource Fault
C
o
n
n
e
c
t
F
a
i
l
u
r
e
Enabled
Disconnected
Set "Disabled"
Bold text indicates actions and events detected by the Ethernet/Token Ring
Subagent that result in internally generated transitions.
Set commands are SNMP Set requests against the state object.
Legend
Connect Success
Disabled
Connect Failure
Connected
Set "Disabled"
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