InfiniBand
TM
Architecture RoCEv2 (IP Routable RoCE) September 2, 2014
V
OLUME 1 - GENERAL SPECIFICATIONS
InfiniBand
SM
Trade Association Page 1 Proprietary and Confidential
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ANNEX A17: ROCEV2 (IP ROUTABLE ROCE)
A17.1 INTRODUCTION
This document is an annex to Volume 1 release 1.2.1 of the InfiniBand Ar-
chitecture, herein referred to as the base specification. This annex is Op-
tional Normative, meaning that implementation of the feature described by
this annex is Optional, but if present, the implementation must comply with
the compliance statements contained within this annex. This specification
follows the spirit of the RoCE Annex (Annex A16 to the base specification)
in defining a new InfiniBand protocol variant that uses an IP network layer
(with an IP header instead of InfiniBand‘s GRH) thus allowing IP routing
of its packets.
A17.2 OVERVIEW
A17.2.1 THE INFINIBAND ARCHITECTURE
The InfiniBand Architecture offers a rich set of I/O services based on an
RDMA access method and message passing semantics. Included are a
variety of transport services, reliable and unreliable, connected and un
-
connected, support for atomic operations, multicast and others.
InfiniBand defines a layered architecture that specifies the first four layers
of the OSI reference stack including the physical, link, network and trans
-
port layers as well as an accompanying management framework. In addi-
tion, the IB specification defines a software interface and its
accompanying verbs which are designed to allow smooth access to the
services provided by the InfiniBand Architecture.
A17.2.2 RDMA OVER CONVERGED ETHERNET (ROCE)
RDMA over Converged Ethernet (RoCE) is an InfiniBand Trade Associa-
tion Standard designed to provide InfiniBand Transport Services on
Ethernet Networks
4
. RoCE preserves the InfiniBand Verbs Semantics to-
gether with its Transport and Network Protocols and replaces the Infini-
Band Link and Physical Layers with those of Ethernet. The network
management infrastructure for RoCE is also that of Ethernet.
4. http://www.infinibandta.org/content/pages.php?pg=about_us_RoCE
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zuoshouchiyan2019-08-15rdma相关的资料还是很重要的
HEHE87372019-10-13文档不错，挺好用的
EchoMMQ2018-08-01文档很好用。
