Snmp Faqs - DPS Telecom NetGuardian 832A G5 User Manual

123
5.2

SNMP FAQs

Q. Which version of SNMP is supported by the SNMP agent on the NetGuardian?
A. SNMP v1, v2C, and v3 on the NetGuardian G5 series.
Q. How do I configure the NetGuardian to send traps to an SNMP manager? Is there a separate
MIB for the NetGuardian? 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 begins sending traps as soon as the SNMP managers are defined. The
NetGuardian MIB is included on the NetGuardian Resource CD. The MIB should be compiled on your
SNMP manager. (Note: MIB versions may change in the future.) The unit supports a main SNMP
manager, which is configured by entering its IP address in the trap address field of Ethernet Port
Setup. You can also configure up to eight secondary SNMP managers, which is configured by
selecting the secondary SNMP managers as pager recipients. Community strings are configured
globally for all SNMP managers. To configure the community strings, choose System from the Edit
menu, and enter appropriate values in the Get, Set, and Trap fields.
Q. Does the NetGuardian support MIB-2 and/or any other standard MIBs?
A. The NetGuardian supports the bulk of MIB-2.
Q. Does the NetGuardian SNMP agent support both NetGuardian and T/MonXM variables?
A. The NetGuardian SNMP agent manages an embedded MIB that supports only the NetGuardian'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, but there are two exception to this rule.
Exception 1: the first alarm in an all clear condition generates an additional summary point set trap.
Exception 2: the final clear alarm that triggers an all clear condition generates an additional summary
point clear 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 manual talks about eight 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. For more information about the set commands, see Reference Information,
Display Mapping, in any of the NetGuardian software configuration guides.
Q. How can I associate descriptive information with a point for the RTU granular traps?
A. The NetGuardian alarm point descriptions are individually defined using the Web Browser Interface,
TTY, or NGEdit configuration interfaces.
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.)