Kokusai Denshin Denwa Co., Ltd.

Kokusai Denshin Denwa Kabushiki Kaisha

Kdd Corporation

Keizo Sugiyama

Hiroki Horiuchi

Sadao Obana

Kiyohito Yoshihara

Kenji Suzuki

Tetsuya Kuroki

A polling period controlling apparatus capable of polling with a period traceable temporal variations of management information values of a managed unit is provided with a polling period calculator which decomposes a sequence of management information values, stored in the sequence memory , into the sum of sinusoids with different frequencies to find the maximum frequency and determines the polling period from an inverse of two times the largest frequency. A central controller then compares between the required bandwidth specified by the polling period and a network management bandwidth and, when the former is smaller than the latter, obtains the management information value from the managed unit using the polling period. When the former is greater, the central controller obtains the management information value using the polling period determined from the network management bandwidth. The management information value obtained is saved in the sequence memory while the oldest group of management data is eliminated.

Polling period controlling apparatus

Route selection method

The managed object instance is used as access control unit, then access denial and permission are quickly decided. After a pre-process to the naming tree which is an object of access control, MOI included within every scope which can be designated by the management operation is obtained. At every issue of the management operation, access denial and permission are decided by using the data obtained in the pre-process. When the configuration of the naming tree is changed, the data are easily and rapidly revised, then the access control is adaptive to the dynamic change of the naming tree.

Method for access control on MIB in OSI management

The gateway apparatus for SNMP/OSI management enables that an SNMP manager manages an OSI management agent, by using a basic conversion of a management operation and a management information between SNMP and CMIP and by using a cache, a replica and a link object.

Apparatus for management of SNMP/OSI gateways

Growing community of inventors

Tokyo, Japan

Keizo Sugiyama