User's Manual

CHAPTER 4. Message Flow
4-30 © SAMSUNG Electronics Co., Ltd.
• • • •
WSM
(SNMP Manager)
Web-EMT
(HTTP Client)/IMISH
MRA-F
MMA-G
HTTP Server
SNMP
CLIM
SNMP get/set/get_next/get_bulk, SNMP trap
HTTP message (command/response)
CLI Command
Statistical Data
SPI-2213
4.5 Operation and Maintenance Message Flow
An operator can check and change the status of the SPI-2213 by means of the management
system. To this end, the SPI-2213 provides the SNMP agent function. The function enables
the WSM operator to perform the operation and maintenance function of the SPI-2213 at
remote site by using the SNMP.
In addition, the operator can perform Web-EMT based maintenance function by using a
Web browser in a console terminal or IMISH based maintenance function by using the SSH
connection. However, grow/degrow, paging information change and neighbor list change
functions are only available on WSM.
The statistical information provided by the SPI-2213 are provided to the operator according
to collection period and the real-time monitoring function for a specific statistical item
specified by the operator is, also, provided.
Operation and Maintenance Message Flow
The operation and maintenance of the SPI-2213 is carried out via the SNMP get/get_next/
get_bulk/set/trap message between the SNMP agent on the main OAM and the SNMP
manager of the WSM. The SPI-2213 deals with various operation and maintenance messages
received from the SNMP manager of the management system, transfers the results and
reports the events, such as failure generation or status change, in real time as applicable.
The statistical information is provided as statistical file format in unit of BI and the
collection period can be specified as one of 15, 30 and 60 minutes.
The OAM signal flow is as shown in the figure below:
Figure 4.20 Operation and Maintenance Signal Flow