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SNMP FAQs
16.2
Q. Which version of SNMP is supported by the SNMP agent on the Cell2 Interface?
A.
SNMP v1 and v2c.
Q. How do I configure the Cell2 Interface to send traps to an SNMP manager? Is there a
separate MIB for the Cell2 Interface? 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 Cell2 Interface begins sending traps as soon as the SNMP managers are defined. The Cell2
Interface MIB is included on the Cell2 Interface Resource CD. The MIB should be compiled on your
SNMP manager. (
Note:
MIB versions may change in the future.) The unit supports 2 SNMP
managers, which are configured by entering its IP address in the Trap Address field of Ethernet Port
Setup. To configure the community strings, choose SNMP from the Edit menu, and enter
appropriate values in the Get, Set, and Trap fields.
Q. Does the Cell2 Interface support MIB-2 and/or any other standard MIBs?
A.
The Cell2 Interface supports the bulk of MIB-2.
Q. Does the Cell2 Interface SNMP agent support both Cell2 Interface and T/MonXM variables?
A.
The Cell2 Interface SNMP agent manages an embedded MIB that supports only the Cell2 Interface'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. How can I associate descriptive information with a point for the RTU granular traps?
A.
The Cell2 Interface 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 Cell2 Interface and the SNMP manager are both on the network. Use the unit's
ping command to ping the SNMP manager.
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