In today's data centers, the performance of interconnects plays a pivotal role. However, many of the underlying technologies for these interconnects have a history of several decades and existed long before data centers came into being.To better cater to the requirements of data center networks, particularly in the context of intra-rack communication, we have developed a new interconnect. This interconnect is based on a lossless link layer protocol, named RIFL. In this work, we designed and implemented RIFL Layer 2, a scalable network that supports up to multi-hundred Gbps communication. RIFL Layer 2 includes the RIFL switch and RIFL NIC. By utilizing a simple Batcher Banyan and iSLIP RIFL switch, we effectively keep the typical intra-rack latency under 400 nanoseconds. Moreover, for a 32-port 100Gbps network, under both Bernoulli arrival and bursty arrival traffic patterns, we ensure that the 99\% tail latency does not exceed 12microseconds.

翻译：在当今的数据中心中，互连性能起着关键作用。然而，许多支撑这些互连的基础技术已有数十年的历史，且早在数据中心出现之前就已存在。为了更好地满足数据中心网络的需求，特别是在机架内部通信的背景下，我们开发了一种新型互连技术。该互连基于无损链路层协议RIFL。在本工作中，我们设计并实现了RIFL第二层——一种支持高达数百Gbps通信的可扩展网络。RIFL第二层包含RIFL交换机和RIFL网卡。通过采用简单的Batcher Banyan与iSLIP RIFL交换机，我们有效将典型机架内延迟控制在400纳秒以内。此外，对于32端口100Gbps网络，在伯努利到达与突发到达两种流量模式下，我们确保99%尾延迟不超过12微秒。