JP2016181793A5

JP2016181793A5 -

Info

Publication number: JP2016181793A5
Application number: JP2015060782A
Authority: JP
Filing date: 2015-03-24
Publication date: 2017-03-09
Anticipated expiration: 2035-03-24

Description

基幹ネットワーク１００と通信線２０１を介して接続しているポート３０１−３についても、フレームの伝達経路は同様である。信号線３１５，３１６を介して、ポート３０１−３と物理層３０２−３との間でフレームの送信および受信を行う。また、信号線３２５，３２６を介して、物理層３０２−３とフレーム転送・ポート制御部３０３との間でフレームの送信および受信を行う。 The frame transmission path is the same for the port 301-3 connected to the backbone network 100 via the communication line 201. Via the signal line 315, to transmit and receive the frames between the port 301-3 and the physical layer 302-3. In addition, transmission and reception of frames are performed between the physical layer 302-3 and the frame transfer / port control unit 303 via the signal lines 325 and 326.

図７は、スイッチ装置のブロッキング状態が変化する前の状態を示す図である。
図８は、スイッチ装置のブロッキング状態が変化した後の状態を示す図である。
図９は、本発明の第２の実施形態に係るポート状態変化監視処理を示すフローチャートである。 FIG. 7 is a diagram illustrating a state before the blocking state of the switch device is changed.
FIG. 8 is a diagram illustrating a state after the blocking state of the switch device is changed.
FIG. 9 is a flowchart showing a port state change monitoring process according to the second embodiment of the present invention.

第２の実施の形態では、図９に示すポート状態変化監視処理により、ポートの状態がブロッキング状態からフォワーディング状態に遷移したときに、図５のループ検知判定処理が実行される。そのため、スイッチ装置のポートの状態がブロッキング状態からフォワーディング状態に遷移し、ループ検知フレームのループが発生した際に、速やかに該当ポートを閉塞処理し、ブロードキャストフレームのループ（無限の周回）が防止される。それゆえ、ブロードキャストフレームのループに起因するネットワークシステム全体のダウンを防止することができる。 In the second embodiment, the port state changes superintendent Misho management shown in FIG. 9, the state of the port when the transition from the blocking state to the forwarding state, the loop detection determining process of FIG. 5 is executed. Therefore, a transition state of the port of the switch equipment from the blocking state to a forwarding state, when the loop of the loop detection frame is generated, immediately the corresponding port closed process, the broadcast frames loop (infinite circulation) is Is prevented. Therefore, it is possible to prevent the entire network system from being down due to a broadcast frame loop.

Claims

Multiple ports to send and receive data;
A transmitting unit for transmitting loop detection data including source port information for detecting a loop configuration from each of the plurality of ports;
Determination of whether or not the other port that has received the loop detection data is blocked when the loop detection data transmitted from one of the plurality of ports is received by another port And
When the other port that has received the loop detection data is not in the blocked state during the determination process by the determination unit, the one port that has transmitted the loop detection data is processed to be blocked, and the other port A port control unit that does not perform processing for the one port when
An information processing apparatus comprising:

2. There is a time lag between receiving the loop detection data at the other port and determining whether or not the other port that has received the loop detection data is blocked by the determination unit. The information processing apparatus described.

When a loop suppression function using a route selection algorithm is activated, the port control unit monitors a state of the plurality of ports, and from a blocking state in which data transfer is not performed by the loop suppression function to a non-blocking state The information processing apparatus according to claim 1, wherein when there is a port that has transitioned to, the loop detection data is transmitted from the corresponding port.

The information processing apparatus according to claim 1, wherein the transmission unit multicasts the loop detection data from all of the plurality of ports.

A network system comprising at least a first information processing device, a second information processing device, and a third information processing device,
The first information processing apparatus includes a port for connecting to the second information processing apparatus and a port for connecting to the third information processing apparatus, and a plurality of ports for transmitting and receiving data,
A transmitting unit for transmitting loop detection data including source port information for detecting a loop configuration from each of the plurality of ports;
Determination of whether or not the other port that has received the loop detection data is blocked when the loop detection data transmitted from one of the plurality of ports is received by another port And
When the other port that has received the loop detection data is not in the blocked state during the determination process by the determination unit, the one port that has transmitted the loop detection data is processed to be blocked, and the other port A port control unit that does not perform processing for the one port when
A network system comprising: