David A. Hughes - Mountain View CA Daryn Lau - Saratoga CA Dan Klausmeier - Menlo Park CA Eugene Wang - Fremont CA Madhav Marathe - Cupertino CA Frank Chui - Sunnyvale CA Gene K. Chui - Campbell CA Gary Kipnis - Sunnyvale CA Gurmohan S. Samrao - San Jose CA Lionel A. King - San Jose CA
Assignee:
Cisco Technology, Inc. - San Jose CA
International Classification:
H04L 1256
US Classification:
370387, 3703951
Abstract:
An apparatus is described comprising an ingress port and a plurality of switch planes where each of the switch planes has a dedicated scheduler and each of the switch planes are communicatively coupled to the ingress port. The switch planes may further have at least one input control port and at least one output control port where each of the input control ports are coupled to each of the output control ports in a crossbar arrangement. The communicative coupling may further comprise one of the input control ports coupled to the ingress port. Furthermore, the ingress port may have at least one unicast queue which is dedicated to a specific egress port. The ingress port may also have a multicast queue. The dedicated scheduler may further comprise a pointer to determine priority between multicast and unicast traffic, a pointer to determine priority between contending input control ports having multicast traffic and/or a pointer for each of the output control ports to determine priority between contending input control ports having unicast traffic. The apparatus may also further comprise a plurality of ingress ports where each of the ingress ports are communicatively coupled to one of each of the input control ports.
Method For Implementing Automatic Protection Switching (Aps) Using Cell Replication
David A. Hughes - Mountain View CA, US Onchuen D. Lau - Saratoga CA, US Frank K. Chui - Sunnyvale CA, US Quang H. Nguyen - San Jose CA, US
Assignee:
Cisco Technology, Inc. - San Jose CA
International Classification:
H04L012/02 H04L012/54
US Classification:
3703954, 370380, 370390
Abstract:
A method for cell replication in which a request for data transmission and mapping information are received by a crossbar and a scheduler and are sent by one of a plurality of software configurable slot remap registers. The mapping information is indicative of a destination slot and a backup destination slot to which the data is to be transmitted. The method replicates the data by transmitting the data to the destination slot and to the backup destination slot when the data arrives at an input slot of the crossbar.