scholarly journals A Clos-Network Switch Architecture Based on Partially-Buffered Crossbar Fabrics

2016 ◽  
Author(s):  
Fadoua Hassen ◽  
Lotfi Mhamdi
Keyword(s):  
Switch Architecture ◽  
Clos Network ◽  
Network Switch

THREE-STAGE CLOS-NETWORK SWITCH ARCHITECTURE WITH BUFFERED CENTER STAGE FOR MULTI-CLASS TRAFFIC

2006 ◽  
Vol 15 (02) ◽  
pp. 263-276 ◽  
Author(s):  
MOO-KYUNG KANG ◽  
CHONG-MIN KYUNG
Keyword(s):  
Round Trip ◽  
Memory Space ◽  
Switch Architecture ◽  
Center Stage ◽  
Clos Network ◽  
Network Switch ◽  
Network Switches ◽  
Strict Priority ◽  
Priority Policy ◽  
The Ideal

Memory-space-memory (MSM) arrangement is a popular architecture to implement three-stage Clos-network switches with distributed arbitration. The scalability of this architecture, however, is limited by the round-trip communication delay between the first and the second stages. Moreover, virtual output queue does not completely remove the blocking in the buffered modules under multi-class traffic. In this paper, we propose a competition-free memory–memory–memory (CFM3) switch which is a three-stage Clos-network switch with buffered center stage. The CFM3 deploys buffered modules in all stages to simplify communication between stages. To reduce the blocking, each module is equipped with a set of buffers fully separated according to the destinations, classes of packets and the input ports of the module. Despite the buffered center stage, CFM3 is free from reordering problem due to simple control mechanism. Simulation result shows the delay of the proposed CFM3 switch closely approaches that of the ideal Output Queued switch under multi-class traffic when strict priority policy popularly used for class-based switch is deployed. The CFM3 achieves 100% throughput under uniformly distributed four-class traffic with strict priority policy while traditional MSM switch records about 77% throughput.

scholarly journals A Split-Central-Buffered Load-Balancing Clos-Network Switch With In-Order Forwarding

2019 ◽  
Vol 27 (2) ◽  
pp. 467-476 ◽  
Author(s):  
Oladele Theophilus Sule ◽  
Roberto Rojas-Cessa ◽  
Ziqian Dong ◽  
Chuan-Bi Lin
Keyword(s):  
Load Balancing ◽  
Clos Network ◽  
Network Switch
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