Sony BKM-FW50 Service Manual page 25

5-1. SNMP
BKM-FW50 installs SNMP (Simple Network Management
Protocol). SNMP is a standard protocol for network
management that was standardized in IETF (Internet
Engineer Task Force).
By using SNMP, the management information of equipment
connected to a network can be gotten via a network. The
information of multiple equipment gotten using SNMP can
also be unitarily managed by using SNMP management
software.
The equipment corresponding to SNMP has a "management
information database" called MIB (Management
Information Base) in the inside of equipment. In SNMP, the
bidirectional communication of data contained in MIB is
realized between a "management system" and "management
object system" that exist in a network.
In MIB, there is the standard MIB prescribed by RFC.
Especially, MIB-2 (formal name: MIB-II) is its
representative MIB. MIB-2 was established to manage a
network. MIB-2 is installed in much network equipment
such as a PC, router, and switch as a standard feature.
BKM-FW50 installs this MIB-2.
Monitoring and monitored sides exist when equipment is
monitored via a network using SNMP. The monitoring side
is called an "SNMP manager". It is mainly constituted by
the software of PC. For the monitored side, a module called
an "SNMP agent" is installed. SNMP-compatible
equipment transmits MIB information to an SNMP manager
via this SNMP agent. BKM-FW50 installs this SNMP
agent. BKM-FW50 can realize the communication with a
general-purpose SNMP manager using this SNMP agent.
Basically, an SNMP agent replies only when an inquiry is
sent from an SNMP manager.
The SNMP manager periodically inquires the equipment,
which it manages, about MIB information. This way to get
information is called "polling". In polling, equipment
replies using a response command when an SNMP manger
sends a request command to equipment. By polling,
therefore, equipment can be monitored without applying a
high load to the equipment.
On the other hand, notification can also be done from the
equipment side to an SNMP manager. This notification is
called a "trap". Using this trap, when a serious trouble
occurred in equipment, it can be notified to the SNMP
manager in a short time.
BKM-FW50 is compatible with the two polling and trap
protocols described above. Equipment can be efficiently
monitored using these protocols.
BKM-FW50
Section 5
SNMP
5-2. Specifications of SNMP Installation
The specifications of the SNMP agent installed in BKM-
FW50 are shown in the table below.
. SNMP version: SNMPv1
. MIB definition: SMIv2
. Support PDU:
. Standard MIB to be installed
5-3. Installation
The setting below is required to use the SNMP function of
BKM-FW50. (Set according to your network environment
and SNMP management environment.)
. Community and its Community property
. Authentication trap
. Host restriction
The Web server function of BKM-FW50 is used for
setting. Refer to the Operation Manual of BKM-FW50 for
the operation of the Web server.
The contents of each item and the setting of SNMP are
fully described in this specification.
GetRequesat
SetRequest
GetNextRequest
Trap
5-1