| 摘要 |
There is disclosed a masking unit (REQMSK) for use in a data packet switching system. The data switching system being of the type having a memoryless cross-back switch (SM) providing cyclic connections under the control of a switch arbiter (SCARB) between ingress routers (IR 0 , IR 1 , IR 2 and IR 3 ) and egress routers (ER 0 , ER 1 , ER 2 and ER 3 ). Each of the ingress routers (IR 0 -IR 3 ) is provided with incoming packet buffering on a virtual output queue basis (VOQ 0.0 , VOQ 0.1 , VOQ 0.2 , and VOQ 0.3 for ingress router IR 0 ). Each virtual output queue also produces a connection request signal REQ 0.0 to REQ 3.3 when the corresponding queue has a data packet in it. The masking unit REQMSK is arranged to randomly mask out correlated connection requests. |
