| 摘要 |
A method is described for rerouting a data stream previously routed via a route through a switching network which has now failed. The method includes the steps of: detecting the failure on a link (L19/L56) between first (SN1/SN5) and second (SN9/SN6) switching nodes in one of these switching nodes (SN1/SN5); transmitting from this one switching node (SN1/SN5) a request message (REQ) with first (IDA) and second (IDB) address fields containing addresses of the first (1/5) and second (9/6) switching nodes, respectively; in each switching node having received the request message (REQ) retransmitting it, until an alternative route for the data stream is found between two end switching nodes of said alternative route; by one of these end switching nodes (SN1/SN5) chosen according to a predetermined rule after the alternative route has been found, allocating the data stream to this alternative route and transmitting it thereon. <MATH>
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