All delivered network switch

摘要

Methods and systems for operating a packet switch that communicates packets with error indication, including the steps of: receiving a packet comprising an error detection field; utilizing the error detection field to identify an error in the packet; marking the occurrence of the error in an error propagation field in the packet; updating the value of the error detection field; and forwarding the modified packet, with the updated value of the error detection field and the error propagation field, according to information carried in the packet.

主权项

1. A packet switch configured to operate in a packet switching network that communicates packets with error indication, comprising:
the switch configured to receive a packet comprising an error detection field; the switch is further configured to utilize the error detection field to identify an error in the packet; the switch is further configured to mark occurrence of the error in an error propagation field in the packet; the switch is further configured to modify value of the error detection field; whereby, by itself, the value of the error detection field in the modified packet does not indicate an error in the modified packet; and the switch is further configured to forward the modified packet, with the modified value of the error detection field and the error propagation field, according to information carried in the packet.