公开(公告)号：EP1327338A1

公开(公告)日：2003-07-16

申请号：EP01976993.4

申请日：2001-10-16

申请人： Telefonaktiebolaget L M Ericsson (Publ)

发明人： SYDHOFF, Per ,  BERGHAGER, Hans ,  LINDBLOM, Mats ,  KUNDEL, Mikael ,  BERGLUND, Astrid

IPC分类号： H04L12/56 ,  H04Q11/04

CPC分类号： H04L12/5601 ,  H04L49/153 ,  H04L49/203 ,  H04L2012/5627 ,  H04L2012/5646 ,  H04Q11/0478

摘要： A change of switch plane operation is performed in a multi-plane cell switching node (20) which has a first switch plane (22); a second switch plane (24), and plural switch port interface units (26). In response to detection of a fault in the active switch plane, the passive switch plane sends a plane change cell to the plural switch port interface units, and stops egress traffic flow from the second switch plane. Upon receiving the plane change cell, each switch port interface unit redirects traffic cells sent from the active plane to the passive switch plane. Each switch port interface unit then determines when traffic cells destined thereto have been flushed from the first switch plane, and changes its active switch plane designation (so that the formerly passive switch plane becomes the active switch plane) so that egress traffic flow can begin from the formerly passive (now active) plane to the respective switch port interface units.