21
SNMP-Option
First section:
The “
Mode
“ selection field enables or disables the SNMP
functionality, including the sending of traps. The selector
“
Version
“ sets the SNMP version (version 1, 2 or 3). In
the two fields below, the reading and writing via SNMP is
separately indicated for the versions 1 and 2.
In version 3, these two fields are disabled. Here, all
registered users of the module (
GUI Settings
→
Passwords
)
have the automatic read access to SNMP. The
write access
can be enabled or disabled for each user by clicking the
SNMP-check box in the “
Passwords
“ menu.
By clicking the “
MIB
“ button the MIB of the module is
generated and can be downloaded.
Second section:
The trap settings are done here. First select the trap version:
V1 trap
• normal traps according to SNMPv1 with
specified community
V2 trap
• normal traps according to SNMPv2 with
specified community
V2 inform • sends information traps according to SNMPv2
and waits for an acknowledgement
V3 trap • normal traps according to SNMPv3
V3 inform • sends information traps according to SNMPv3
and waits for an acknowledgement
In traps of version 1 and 2 the community can be configured.
In traps of version 3 you can configure the user/password
and the usage of the network MAC address as engine ID.
These settings must correspond with the configuration of
the trap receiver, so that traps are successfully transferred. For this purpose a test trap can be sent by clicking the
button “Test“. If a test trap triggered, all pre-preserved traps are discarded. Up to 256 IP addresses can be created resp.
unlocked to receive the traps. They are listed under “
Receiver IP
“.
Third section:
Events are configured, whether (and with which thresholds) they trigger traps. There are three ways to configure a trap:
• without parameters, e.g. fan on/ off
• with a free selectable parameter for a medium priority
• with a selectable parameter from a list box for a medium priority
Events leading up to trigger an SNMP trap, can be (de-) activated and their parameters can be configured.
References and notes:
All users using SNMPv3 must use passwords with at least 8 characters. For SNMPv3 the A-LINE-SBL supports only the
authentication password, not the privacy password. The SBL only supports the MD5 algorithm for authentication password
in SNMPv3. Information traps are specific traps that are available since SNMPv2.If the sender gets no “acknowledge“
from the receiver, it will retransmit until the “acknowledge“ is received.
AnSBL module keeps up to 256 information traps that were not sent successfully. If there are more unconfirmed traps,
the older traps are discarded and marked in the logbook as “failed“. A successfully sent trap is also registered in the
logbook. In case of power failure or reboot of the module the non-confirmed traps are lost.
You‘ll find details in the help text for each event. The critical priorities are set to fixed values that can not be changed.
If the web interface of the module is open, no changes are possible via SNMP.
