Installation manual

59 ATTO Technology Inc. ATTO Utilities Installation and Operation Manual
Send Authentication TRAP
When checked, the agent will send a TRAP to the
configured TRAP destinations indicating that a
Management Station attempted to contact the agent
and used a community string that is not in the
community list.
Note
In subagent mode, this may only be useful
for debugging. The system service will
perform Management Station authentication
based on its configuration, and only forward
the request to the ATTO agent once the
Management Station is authenticated. Since
the system service is reconfigured as
needed to use the community string on this
panel when forwarding requests, there
should not be authentication errors when the
agent processes requests from the system
service. The system service usually has the
same option that can be enabled to see
these authentication failures.
Enable TRAPs
When checked, the agent will send traps to the
configured destinations, if any, if the agent itself is not
disabled. (See Exhibit 1-11
)
Trap Destination Table
This table lists the host address and community string
used for each destination when a trap is triggered. The
host column consists of the hostname or IP address of
the Management Station to which the traps are sent,
and the UDP port on which the trap receiver is
listening. The community column displays the
community string sent with the trap to that host. If the
community string is not in the list of communities
accepted by the receiver, the receiver will ignore the
trap message. (See Exhibit 1-13
)
The table can be manipulated through the Add, Edit
and Remove buttons below it. An existing destination
must be selected to edit or remove it. A valid
community string has a length between 1 and 128.
Note
The trap configuration is completely
independent of the enabled or subagent
modes, but no traps are sent if the agent is
disabled.
Many operating systems have a trap receiver service
as part of their SNMP package, which can be
configured to do various things when it receives a trap,
such as writing to a log file or forwarding to another
destination. In a similar manner to the way the system
service and subagent mode can enable SNMPv3
support, the operating system trap service can be
configured to translate traps it receives into SNMPv3
traps, with optional privacy, authentication and
INFORM support. The ATTO agent then only needs to
specify a single trap destination to this service in order
to enable SNMPv3 support over the network. The
manner in which the system service is configured is
system specific, and beyond the scope of this
document.
Control Buttons
Commit
This button will reconfigure the ATTO agent to use the
settings as they are currently displayed on the screen,
after validating them to the extent possible. The
settings are persistently stored, so that they are
available after a reboot. If necessary, the system
service will be reconfigured to support the agent's
current operational mode.
Restore
This button will update the display to reflect the
settings the agent is currently using, rolling back any
changes made in the panel that have not been
committed. Since these are the current settings, they
do not need to be committed.
Default
This button will update the display with the simplest
configuration, based on the current system
configuration. For example, if the operating system
service is detected as running, the default mode is
subagent. Otherwise, the mode is enabled and the
registered SNMP port is displayed.
WARNING
Since it isn't possible to determine trap
destinations and community strings
programmatically, all trap destinations will
be cleared.