Transmission apparatus, failure recovery method, and network system

摘要

An object is to simplify a process performed due to a failure recovery. To realize this object, the transmission apparatus includes a determining unit that determines, when a transmission apparatus receives a frame from each ring in a network including multiple rings in which a part of each ring is shared, whether failure information indicating that a failure has occurred in one of the rings is contained in one of the received frames. The transmission apparatus also includes a mapping unit that maps a frame that is determined by the determining unit to contain the failure information, onto a shared frame that is a frame used in a shared portion in the multiple rings. Accordingly, the process performed due to a failure recovery can be simplified.

主权项

1. A transmission apparatus comprising:
a central processing unit card that determines, when a frame is received from each of a plurality of rings in a network including the plurality of rings in which a part of each of the plurality of rings is shared, whether failure information indicating that a failure has occurred in one of the plurality of the rings is contained in one of the received frames; and a shared interface card that maps the received frame that is determined by the central processing unit card to contain the failure information onto a shared frame, which is an Optical channel Transport Unit (OTU) frame used in the shared part of each of the plurality of rings and which has a plurality of data-retaining regions, each of the plurality of data-retaining regions being associated with each of the plurality of the rings, wherein the received frame that is determined to contain the failure information is mapped onto, among the plurality of data-retaining regions, a data-retaining region which is associated with the one of the plurality of the rings, and the plurality of data-retaining regions is a plurality of tributary slots included in the OTU frame.