DPS Telecom NetGuardian 8A User Manual page 62

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16.2 SNMP FAQs
Q. Which version of SNMP is supported by the SNMP agent on the NetGuardian 8A?
A. SNMP v1, SNMPv2 and SNMPv3.
Q. How do I configure the NetGuardian 8A to send traps to an SNMP manager? Is there a separate MIB
for the NetGuardian 8A? How many SNMP managers can the agent send traps to? And how do I set
the IP address of the SNMP manager and the community string to be used when sending traps?
A. The NetGuardian 8A begins sending traps as soon as the SNMP notification type is set up. The NetGuardian 8A
MIB can be found on the DPS Telecom website. The MIB should be compiled on your SNMP manager. (Note:
MIB versions may change in the future.) For step-by-step instructions, refer back to the "How to Send SNMP
Traps" section of the user manual.
Q. Does the NetGuardian 8A support MIB-2 and/or any other standard MIBs?
A. The NetGuardian 8A supports the bulk of MIB-2.
Q. Does the NetGuardian 8A SNMP agent support both NetGuardian 8A and T/MonXM variables?
A. The NetGuardian 8A SNMP agent manages an embedded MIB that supports only the NetGuardian 8A's RTU
variables. The T/MonXM variables are included in the distributed MIB only to provide SNMP managers with a
single MIB for all DPS Telecom products.
Q. How many traps are triggered when a single point is set or cleared? The MIB defines traps like "major
alarm set/cleared," "RTU point set," and a lot of granular traps, which could imply that more than one
trap is sent when a change of state occurs on one point.
A. Generally, a single change of state generates a single trap.
Q. What does "point map" mean?
A. A point map is a single MIB leaf that presents the current status of a 64-alarm-point display in an ASCII-readable
form, where a "." represents a clear and an "x" represents an alarm.
Q. The NetGuardian 8A manual talks about control relay outputs. How do I control these from my SNMP
manager?
A. The control relays are operated by issuing the appropriate set commands, which are contained in the DPS
Telecom MIB.
Q. How can I associate descriptive information with a point for the RTU granular traps?
A. The NetGuardian 8A alarm point descriptions are individually defined using the Web Browser.
Q. My SNMP traps aren't getting through. What should I try?
A. Try these three steps:
1. Make sure that the Trap Address (IP address of the SNMP manager) is defined. (If you changed the Trap
Address, make sure you saved the change to NVRAM and rebooted.)
2. Make sure all alarm points are configured to send SNMP traps.
3. Make sure the NetGuardian 8A and the SNMP manager are both on the network. Use the unit's ping
command to ping the SNMP manager.