USER’S GUIDE
458 CyberSWITCH
4.
However, if one of the following messages appears, there is an unexpected condition present
within the CyberSWITCH software. Contact Customer Support.
[SNMP] SNMP initialization failure - unable to allocate
necessary memory
[SNMP] SNMP initialization failure - unable to open UDP port
5.
Verify that the MIB objects can be retrieved via the SNMP get command. Begin by making sure
that the latest version of the enterprise MIB (the ih_mib.asn file) has been compiled at the
desired SNMP network management station(s). Once the new version of the MIB is compiled,
you can issue the SNMP get command.
6.
Verify the CyberSWITCH SNMP Agent is returning the correct values. Compare the values of
the MIB objects retrieved (via the SNMP get command) to the output available via various
system administration console and dynamic management commands. For example, the
isdn
usage
console command displays B-channel information. This information corresponds to the
MIB isdnUsageMonitor group objects, a subset of the ihSystemMonitor group. The
dr
console
command will return output that contains information that corresponds to the MIB
ihStatusReport table. Other console commands that will output information that includes
values that correspond to MIB objects are
ds
,
udp
stats
,
ip stats,
and
snmp stats.
7.
Does the CyberSWITCH respond to SNMP requests?
a.
Enter the command
snmp stats
at the administrative console. If an “
SNMP is not
enabled
” message appears, you must first enable the SNMP Agent (using CFGEDIT).
b.
If the SNMP statistics are displayed, check the value of the “snmpInBadVersions” statistic.
If it is non-zero, the Network Management station is generating request PDUs with an
incompatible SNMP version number. Such requests are discarded by the SNMP agent.
c.
Check the value of the “snmpInBadCommunityUses” statistic. If it is non-zero, the
community name specified in the request PDUs does not have the proper access rights to
perform the desired request, and the request is discarded. To correct this problem,
reconfigure the MIB access level for the desired community name to the desired access
level.
d. Check the value of the “snmpInASNParseErrs” statistic. If it is non-zero, the network
management station is generating request PDUs that are not properly encoded in ASN.1
format. Such requests are discarded by the SNMP agent.
8.
Does the CyberSWITCH generate SNMP Trap PDUs?
a.
Enter the
snmp stats
command at the administrative console. If an “SNMP is not
enabled” message appears, you must first enable the SNMP Agent (using CFGEDIT).
b.
If the SNMP statistics are displayed, check the value of the “
snmpOutTraps
” statistic. If
this counter is zero, the SNMP agent has not generated any Traps. Check your
configuration setup and ensure that at least one SNMP Trap Receiver is configured. If the
value of the “
snmpOutTraps
” statistic is non-zero, the SNMP agent is generating Trap
PDUs. If a given Network Management Station is not receiving Traps as expected, check
your configuration setup and ensure that the IP address and the Community Name of the
Network Management Station that is not receiving Traps is configured properly.
