Comtech EF Data CMR-8500 Manual - Manual (Page 73)

CMR-8500 DVB IP Encapsulator Revision 2
Chapter 4. Device Management via User Interfaces
4.2.9 Simple Network Management Protocol (SNMP)
Simple Network Management Protocol (SNMP) allows an SNMP Manager such as OpenView or Castle
Rock to be used to remotely manage the CMR-8500 in an automated fashion.
The CMR-8500 supports SNMP versions 1 and 2 (SNMPv1 and SNMPv2). Two types of Management
Information Bases (MIBs) are supported: MIB II and private MIB.
MIB II is the default MIB that is used to gather generic information about the unit, such as system ‘up’
time, packets sent or received on an interface, etc. MIB II is designed for only read access, not write
access. To read and write configuration parameters over SNMP requires a private MIB. The private
MIB allows parameters to be set on the Web, Terminal, or Telnet interfaces.
The elements Object Identifiers (OIDs) of the MIB will be listed in the appendix of a revised version of
this manual. CEFD has been assigned an SNMP designator by the IEEE, which will be found in all
elements of the CMR-8500’s MIB.
NOTE
The assigned designator for CEFD (enterprise OID) is 1.3.6.4.1.18723.
The CMR-8500 supports configurable community strings for added security. As a security precaution,
passwords cannot be remotely queried over SNMP.
For SNMP access from a remote network via the public Internet, a VPN connection to the CMR-8500
will need to be established using third-party VPN client/server access.
The default community strings for the SNMP R/W community is private and the R/O community is
public.
4.2.9.1 Multiple Variable Bindings
Three OIDs allow routes to be created, edited, and deleted via a single SNMP command. The procedures
to use these OIDs are as follows:
Addition (Create):
• To add a route to the CMR-8500, the SNMP manager issues a “create” on the main route table.
An index of 1 is assigned.
The route index will be one greater than the number of entries already in the table. This operation creates
the default row as indicated below:
• An “add row” is performed on the index provided. The row is created with all default values.
• Each element is populated using the normal sets to each field in the row, until the entire route has
been filled in.
• Once complete, the “commit” is issued that commits the route for use.
Look-up (Search):
• A “set” is performed by setting one of the three search criteria [IP | MAC | RouteName]. Only
one variable may be set to perform the search. The value returned will be the actual route index
that may be reviewed, modified or deleted.
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