Medias Mediatrix 1204, Справочное руководство

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Chapter 29 - Troubleshooting SNMP Management Software Issues
292 Mediatrix 1204
D
ESCRIPTION
: When I try to set a variable with a MIB configuration tool such as Mediatrix Unit Manager
Network, nothing happens.
P
OSSIBLE
C
AUSE
: The variable may be in a MIB that is located under the mediatrixExperimental branch
of the MIB structure.
Mediatrix configuration tool – the Unit Manager Network – does not support MIBs that are located under
the
mediatrixExperimental branch of the MIB structure. The Unit Manager Network does not have
specific tasks to manage variables in experimental MIBs.
The mediatrixExperimental branch is the area where objects and events in MIBs under development
can be placed without fear of conflicting with other MIBs. When the items rooted under an experimental
sub-tree are ready for release, they will be under a permanent branch.
Even though the Unit Manager Network can view experimental MIBs, SNMP operations may not work
properly on them.
D
ESCRIPTION
: When viewing a table, the unit does not respond.
P
OSSIBLE
C
AUSE
: It may take time to fill completely a table: from 1 to 5 seconds. This is normal, because
the unit is an embedded device with limited processing power.
D
ESCRIPTION
: Is it possible for a hacker to change the content of SNMPv3 variables once the Mediatrix 1204
is in secure mode management?
P
OSSIBLE
C
AUSE
: In secure management mode, the Mediatrix 1204 works in SNMPv1 read-only,
SNMPv2c read-only, and SNMPv3 read/write. SNMP requests using the first two protocols are read-
only, and tables used for setting up SNMPv3 users hide the passwords they carry. Because hackers do
not know what password to use in SNMPv3 requests, they cannot access the Mediatrix 1204 with read-
write permission.