Method and apparatus for migrating sub-network connection protection (SNCP) service

An apparatus for migrating a Sub-Network Connection Protection (SNCP) service, comprising:

• a receiving module, which is used for receiving a migration request of an SNCP service, wherein the migration request comprises either a Permanent Connection (PC) to Soft Permanent Connection (SPC) migration request or a SPC to PC migration request;
• a setting module, which is used for respectively setting cross status control bits of a current operation connection and a correlative connection thereof according to the received migration request;
• a performing module, which is used for performing collective migration of the current operation connection and the correlative connection thereof according to the set cross status control bits;
• and
• a modifying module, which is used for respectively modifying the cross status control bits of the current operation connection and the correlative connection thereof according to a migration result,
• wherein the cross status control bits set by the setting module and/or modified by the modifying module comprise:
• a cross setting status bit used for determining timing of cross connection migration in a serial mechanism or a parallel mechanism, wherein a value of the cross setting status bit is cross to-be-migrated, cross setting successful, or cross setting failed;
• and
• an actual cross status bit used for identifying an actual status of a current cross, wherein a value of the actual cross status bit is sending direction connected, receiving direction connected, both sending direction and receiving direction disconnected, or both sending direction and receiving direction connected.