ZTE Communications ›› 2021, Vol. 19 ›› Issue (1): 82-90.DOI: 10.12142/ZTECOM.202101010
• Research Paper • Previous Articles
LIAN Meng1, GU Rentao1(), JI Yuefeng1, WANG Dajiang2, LI Hongbiao2
Received:
2020-04-08
Online:
2021-03-25
Published:
2021-04-09
About author:
LIAN Meng received the B.S. degree from Beijing University of Posts and Telecommunications, China in 2018. He is currently pursuing the master degree with the State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications. His research interests include intelligent optical network and IP-optical network survivability.|GU Rentao (Supported by:
LIAN Meng, GU Rentao, JI Yuefeng, WANG Dajiang, LI Hongbiao. Adaptability Analysis of Fluctuating Traffic for IP Switching and Optical Switching[J]. ZTE Communications, 2021, 19(1): 82-90.
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URL: http://zte.magtechjournal.com/EN/10.12142/ZTECOM.202101010
Figure 2 Multi-level Clos network: (a) datacenter network; (b) datacenter network mapped to Clos network model; (c) middle layer of Clos network for splitting
OTN Equipment | Composition | Normalized Cost | |
---|---|---|---|
Common unit | Common unit | 3.83 | |
Service unit | Port | Capacity/G | |
16 | 2.5 | 1.25 | |
12 | 10 | 2.22 | |
2 | 40 | 2.29 | |
2 | 100 | 1.59 | |
1 | 100 | 1.83 |
Table 1 Cost parameters for normalized OTN equipment
OTN Equipment | Composition | Normalized Cost | |
---|---|---|---|
Common unit | Common unit | 3.83 | |
Service unit | Port | Capacity/G | |
16 | 2.5 | 1.25 | |
12 | 10 | 2.22 | |
2 | 40 | 2.29 | |
2 | 100 | 1.59 | |
1 | 100 | 1.83 |
IP Router | Composition | Cost | |
---|---|---|---|
Base system | Base system | 10 | |
Processor card | A-type network processor card | 21.14 | |
B-type network processor card | 84.13 | ||
Line card | Port | Capacity/G | |
1 | 100 | 58.57 | |
3 | 40 | 52.06 | |
10 | 10 | 24.57 | |
8 | 2.5 | 97.62 | |
Optical module | 100 | 53.97 | |
40 | 8.41 | ||
10 | 0.22 | ||
2.5 | 0.16 |
Table 2 Cost parameters for normalized IP router
IP Router | Composition | Cost | |
---|---|---|---|
Base system | Base system | 10 | |
Processor card | A-type network processor card | 21.14 | |
B-type network processor card | 84.13 | ||
Line card | Port | Capacity/G | |
1 | 100 | 58.57 | |
3 | 40 | 52.06 | |
10 | 10 | 24.57 | |
8 | 2.5 | 97.62 | |
Optical module | 100 | 53.97 | |
40 | 8.41 | ||
10 | 0.22 | ||
2.5 | 0.16 |
Notation | Description |
---|---|
Total number of service requests | |
Card type set for IP/OTN equipment | |
Port rate set for different types of cards | |
Number of mother card j on one piece of IP/OTN equipment | |
Number of port for IP/OTN equipment on one card j | |
Cost for base system of IP equipment | |
Cost for A-type/B-type card of IP equipment | |
Cost for line card/optical module of IP equipment on one card j | |
Cost for common unit of OTN equipment | |
Cost for service unit/optical module of OTN equipment | |
Total hardware cost for IP/OTN equipment | |
Number of convergence/core IP equipment | |
Number of convergence/core OTN equipment | |
Bandwidth after the OTN multiplexing | |
Iteration time for splitting the middle layer SM |
Table 3 Notations, costs and variables
Notation | Description |
---|---|
Total number of service requests | |
Card type set for IP/OTN equipment | |
Port rate set for different types of cards | |
Number of mother card j on one piece of IP/OTN equipment | |
Number of port for IP/OTN equipment on one card j | |
Cost for base system of IP equipment | |
Cost for A-type/B-type card of IP equipment | |
Cost for line card/optical module of IP equipment on one card j | |
Cost for common unit of OTN equipment | |
Cost for service unit/optical module of OTN equipment | |
Total hardware cost for IP/OTN equipment | |
Number of convergence/core IP equipment | |
Number of convergence/core OTN equipment | |
Bandwidth after the OTN multiplexing | |
Iteration time for splitting the middle layer SM |
Figure 3 Hardware cost of IP switching and OTN switching: (a) with 6 300 Mbit/s mean bandwidth, 0.3 deviation-mean rate and 0.01 blocking rate; (b) with 6 300 Mbit/s mean bandwidth, 0.5 deviation-mean rate and 0.1 blocking rate
Figure 4 Total hardware cost when service number is 1 800 with: (a) 0.3 deviation-mean-rate and 0.01 blocking rate; (b) 0.5 deviation-mean-rate and 0.01 blocking rate; (c) 0.3 deviation-mean-rate and 0.1 blocking rate; (d) cost of IP switching and OTN switching after using FlexE
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