| 摘要 |
<p>A packet optical channel shared protection method and a system thereof, makes the cost of optical channel shared protection to reduce, realizes simplify. In the present invention, while a failure occurs, takes a operation in optical wavelength group but not a single optical wavelength, accomplishes 4 actions at the time of switching, that is, switches the influenced optical wavelength group in working fiber to backup fiber (Steer), switches the optical wavelength group that the sank node is the present node in the backup fiber to the working fiber (Copy), make the optical wavelength group that the sank node is not the present node in the backup fiber to pass through transparently the present node (Pass Through), barrages or strips the backup optical wavelength group transformed in the backup fiber to prevent it from forming ring loop (Strip). Furthermore, provides multiple nodes configuration that achieves the above 4 actions, its common feature is that exists a pair of WB between the upper and the lower fiber, joins one WB in the upper and the lower fiber and joins one OADM respectively.</p> |
