Title:
ネットワークにおける障害処理のための方法および装置
Document Type and Number:
Japanese Patent JP4681049
Kind Code:
B2
Abstract:
A method and arrangement for failure handling in a tree-structured communications network having interconnected edge nodes and switching nodes. VLANs may be established by using spanning trees to provide connectivity in case of a failure in the network. Emitters in the edge nodes periodically broadcast alive messages on the VLANs, and notifiers note the alive messages. A missing alive message indicates a failure on one of the VLANs, and the notifier broadcasts corresponding failure messages on the VLANs. When the alive messages are restored, the notifier broadcasts corresponding repair messages. If a notifier fails to note a failure, one of the edge nodes performs a similar function although somewhat slower.
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Inventors:
Falcus, Yonos
Antar, shaba
Web Sutoberui, Lars
Antar, shaba
Web Sutoberui, Lars
Application Number:
JP2008516778A
Publication Date:
May 11, 2011
Filing Date:
June 14, 2005
Export Citation:
Assignee:
Telefon Akti Bora Get Elm Ericson (Pubble)
International Classes:
H04L12/56; H04L41/06; H04L43/10; H04L45/00; H04L41/0213
Domestic Patent References:
| JP2003158539A | ||||
| JP2004080323A |
Foreign References:
| WO2005048540A1 | ||||
| WO2004075494A1 |
Attorney, Agent or Firm:
Yasunori Otsuka
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Osamu Shimoyama
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Osamu Shimoyama