Dan Li, Chuanxiong guo, haitao wu, kun tan, and yongguang zhang
The goal of data center networking is to interconnect
a large number of server machines with low equipment
cost, high and balanced network capacity, and robustness to
link/server faults. It is well understood that, the current practice
where servers are connected by a tree hierarchy of network
switches cannot meet these requirements , .
In this paper, we explore a new server-interconnection structure.
We observe that the commodity server machines used in
today’s data centers usually come with two built-in Ethernet
ports, one for network connection and the other left for backup
purpose. We believe that, if both ports are actively used in
network connections, we can build a low-cost interconnection
structure without the expensive higher-level large switches. Our
new network design, called FiConn, utilizes both ports and only
the low-end commodity switches to form a scalable and highly
Although the server node degree is only two in this structure,
we have proven that FiConn is highly scalable to encompass
hundreds of thousands of servers with low diameter and high
bisection width. The routing mechanism in FiConn balances
different levels of links. We have further developed a lowoverhead
traffic-aware routing mechanism to improve effective
link utilization based on dynamic traffic state. Simulation results
have demonstrated that the routing mechanisms indeed achieve
high networking throughput.
In IEEE/ACM Trans. on Networking
Publisher IEEE/ACM Transactions on Networking
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