Title :
A Flexible Cross Connect LCAS for Bandwidth Maximization in 2.5G EoS
Author :
Tzeng, Hou-Cheng ; Chiu, Ching-Te
Author_Institution :
Dept. of Comput. Sci., Nat. Tsing Hua Univ., Hsinchu
Abstract :
Recently Ethernet-over-SONET/SDH becomes an important topic due to massive growth of data traffic. In this paper, we propose a bandwidth efficient architecture that can transport 4 gigabit Ethernets and 20 fast Ethernets over OC-48 SONET connection. It includes a cross connect UTOPIA interface to aggregate traffic, a switch block capable of flexible and resilient LCAS member mapping, and an enhanced LCAS module that refines VCAT granularity into one-third of VC-3 (STS-1) so as to achieve 97% bandwidth efficiency in worst case. Moreover, we improve the performance of LCAS bandwidth management by modifying its control packet to achieve constant refresh time. In the end, we present a novel mapping scheme that eliminates the need of differential delay compensation memory for UDP/IP applications
Keywords :
bandwidth allocation; local area networks; telecommunication traffic; transport protocols; Ethernet-over-SONET; IP application; LCAS bandwidth management; UDP application; bandwidth efficiency; bandwidth maximization; cross connect UTOPIA interface; cross connect link capacity adjustment scheme; data traffic; differential delay compensation; switch block capability; Aggregates; Bandwidth; Delay; Earth Observing System; Ethernet networks; Payloads; Protocols; SONET; Switches; Synchronous digital hierarchy;
Conference_Titel :
Network Computing and Applications, 2006. NCA 2006. Fifth IEEE International Symposium on
Conference_Location :
Cambridge, MA
Print_ISBN :
0-7695-2640-3
