Limitations of current Ethernet switch architectures for enhanced flow control and service differentiation
One of the new challenges associated with full‐duplex Ethernet is that of providing for network congestion control. The IEEE 802.3x Standard does not specify the switch architecture for implementing PAUSE flow control or at what point a MAC Control entity actually generates a PAUSE frame. This is an...
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| Published in | International journal of network management Vol. 19; no. 3; pp. 153 - 174 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
Chichester, UK
John Wiley & Sons, Ltd
01.05.2009
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| Subjects | |
| Online Access | Get full text |
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| Abstract | One of the new challenges associated with full‐duplex Ethernet is that of providing for network congestion control. The IEEE 802.3x Standard does not specify the switch architecture for implementing PAUSE flow control or at what point a MAC Control entity actually generates a PAUSE frame. This is an implementation issue that is product specific and as a result many different switch architectures are possible. There are also a number of limitations of the PAUSE flow control mechanism when implemented in Ethernet switches. These issues have not been adequately addressed in the literature. In addition, multimedia traffic such as real‐time voice and streaming video are now being deployed over switched Ethernet networks, thus calling for congestion control with service differentiation for the various classes of traffic. Here we examine current Ethernet switch architectures and show that the PAUSE flow control when implemented in these architectures does not provide service selectivity and differentiation, making it unsuitable for real‐time traffic. Copyright © 2008 John Wiley & Sons, Ltd. |
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| AbstractList | One of the new challenges associated with full‐duplex Ethernet is that of providing for network congestion control. The IEEE 802.3x Standard does not specify the switch architecture for implementing PAUSE flow control or at what point a MAC Control entity actually generates a PAUSE frame. This is an implementation issue that is product specific and as a result many different switch architectures are possible. There are also a number of limitations of the PAUSE flow control mechanism when implemented in Ethernet switches. These issues have not been adequately addressed in the literature. In addition, multimedia traffic such as real‐time voice and streaming video are now being deployed over switched Ethernet networks, thus calling for congestion control with service differentiation for the various classes of traffic. Here we examine current Ethernet switch architectures and show that the PAUSE flow control when implemented in these architectures does not provide service selectivity and differentiation, making it unsuitable for real‐time traffic. Copyright © 2008 John Wiley & Sons, Ltd. One of the new challenges associated with full-duplex Ethernet is that of providing for network congestion control. The IEEE 802.3x Standard does not specify the switch architecture for implementing PAUSE flow control or at what point a MAC Control entity actually generates a PAUSE frame. This is an implementation issue that is product specific and as a result many different switch architectures are possible. There are also a number of limitations of the PAUSE flow control mechanism when implemented in Ethernet switches. These issues have not been adequately addressed in the literature. In addition, multimedia traffic such as real-time voice and streaming video are now being deployed over switched Ethernet networks, thus calling for congestion control with service differentiation for the various classes of traffic. Here we examine current Ethernet switch architectures and show that the PAUSE flow control when implemented in these architectures does not provide service selectivity and differentiation, making it unsuitable for real-time traffic. Abstract One of the new challenges associated with full‐duplex Ethernet is that of providing for network congestion control. The IEEE 802.3x Standard does not specify the switch architecture for implementing PAUSE flow control or at what point a MAC Control entity actually generates a PAUSE frame. This is an implementation issue that is product specific and as a result many different switch architectures are possible. There are also a number of limitations of the PAUSE flow control mechanism when implemented in Ethernet switches. These issues have not been adequately addressed in the literature. In addition, multimedia traffic such as real‐time voice and streaming video are now being deployed over switched Ethernet networks, thus calling for congestion control with service differentiation for the various classes of traffic. Here we examine current Ethernet switch architectures and show that the PAUSE flow control when implemented in these architectures does not provide service selectivity and differentiation, making it unsuitable for real‐time traffic. Copyright © 2008 John Wiley & Sons, Ltd. |
| Author | Ouellette, Michel Aweya, James Montuno, Delfin Y. |
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| References | McKeown N, Anderson TE. A quantitative comparison of iterative scheduling algorithms for input-queued switches. Computer Networks and ISDN Systems 1998; 30: 2309-2326. Seifert R. Gigabit Ethernet. Addison-Wesley: Reading, MA, 1998. 1998 1998; 30 1997 May 1998 June 1998 e_1_2_1_6_2 e_1_2_1_7_2 e_1_2_1_4_2 e_1_2_1_5_2 e_1_2_1_2_2 Seifert R (e_1_2_1_3_2) 1998 e_1_2_1_8_2 e_1_2_1_9_2 |
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| Snippet | One of the new challenges associated with full‐duplex Ethernet is that of providing for network congestion control. The IEEE 802.3x Standard does not specify... Abstract One of the new challenges associated with full‐duplex Ethernet is that of providing for network congestion control. The IEEE 802.3x Standard does not... One of the new challenges associated with full-duplex Ethernet is that of providing for network congestion control. The IEEE 802.3x Standard does not specify... |
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| SubjectTerms | Architecture Differentiation Ethernet Flow control Networks Switches Switching theory Traffic flow |
| Title | Limitations of current Ethernet switch architectures for enhanced flow control and service differentiation |
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