Method and system for detecting loss of synchronization in ports

摘要

Machine implemented method and system of detecting a loss of sync at a port of a network device coupled to a port of another device is provided. The port includes logic configured to detect that a special character has not been received by the port for a programmable duration; and generates a signal for a processor of the network device indicating a loss of sync between the port of the network device and the port of the other device.

主权项

1. A machine implemented method of detecting a loss of sync at a port of a network device coupled to a port of another device, comprising:
decoding a frame received at the port of the network device; detecting, from the decoded frame absence of an expected special character that has not been received by the port of the network device, where absence of the special character is not a code violation that occurs upon receipt of an invalid code at the port; generating a special character absent signal for a timer module that tracks a duration during which the special character has not been received at the port; and generating an interrupt signal for a processor of the network device indicating a loss of sync between the port of the network device and the port of another device when the tracked duration reaches a programmable duration.