HP Systems Insight Manager - Manual (Page 173)

C Protocols used by Systems Insight Manager
Systems Insight Manager uses many different management protocol standards. This capability
enables Systems Insight Manager to provide management support for a wide array of manageable
systems.
SNMP
The Internet Engineering Task Force (IETF), the standards-rating body for the worldwide Internet,
has defined a management protocol, SNMP , which has accumulated a major share of the market
and has the support of over 20,000 different products. SNMP has its roots in the Internet community.
The complexity of large international TCP/IP networks has provided the necessary incentive to
develop a standard method of managing devices on the network.
Within the SNMP framework, manageable network systems (routers, bridges, servers, and so on)
contain a software component called a
management agent . The agent monitors the various
subsystems of the network element and stores this information in a MIB . The agents enable the
device to generate traps, which can be sent to a trap destination server that is running Systems
Insight Manager. Conceptually, the MIB is a database that can be written to and read by a
management application using the SNMP protocol. The following MIB types include:
•
Internet Management MIBs.
These MIBs include MIB-II, RMON, and others and represent the core objects that are common
across the widest range of network devices implementing the Internet protocols. Examples of
these objects include network protocols such as TCP/IP and network systems such as Ethernet
network interfaces.
•
Vendor MIBs.
These MIBs represent objects that are unique to an individual vendor's product or product
line. Over 500 vendors and organizations have created their own vendor MIBs. HP was the
first personal computer company to develop a MIB-enabled SNMP management of system
hardware.
SNMP supports both read and write (GET and SET) commands on attributes. Some vendors do
not support the SET command because of the potential to allow an unauthorized person to alter
critical parameters on a network element. Systems Insight Manager primarily only uses the SNMP
GET
command.
SNMP is associated with TCP/IP and used for monitoring systems on Ethernet networks because
of its long association with the Internet.
Since its inception, SNMP itself has undergone several updates, including SNMP V2c and SNMP
V3. Systems Insight Manager supports the original V1-compliant agents and the compilation of
V1 and V2 MIBs. SNMP uses UDP port 161 for monitoring systems, while traps are received on
port 162.
If your CMS is an HP-UX or Linux system, Systems Insight Manager might need to co-exist with
other applications using port 162. Use the following procedure to assign Systems Insight Manager
to use a different port.
Procedure 43 Assigning Systems Insight Manager to use a different port
1. Open the globalsettings.props file located at /etc/opt/mx/config/
globalsettings.props.
2. Locate the SnmpTrapPortAddress property: SnmpTrapPortAddress=162 .
3. Modify this property by changing the port value to a different port number.
4. Restart Systems Insight Manager.
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