White Papers
Abstract
This paper is provided for IBM®, IBM customers, and vendors who have an interest in the IBM Shared Memory Communications (SMC) protocol and related solutions such as IBM z/OS® Shared Memory Communications, IBM Z® Internal Shared Memory, and IBM RoCE Express® features.
Content
The purpose of this paper is to:
- Provide a brief high-level review of SMC in its original form. In this paper, SMC in its original form is referred to as SMC Version 1 (SMCv1). SMCv1 connectivity is limited to hosts that are directly attached to a common single IP subnet.
- Introduce the next version of SMC, referred to as SMC Version 2 (SMCv2). SMCv2 provides Shared Memory Communications capability over multiple IP subnets.
Notes:
-
IBM Shared Memory Communications: Version 2 (Fourth Edition) was published in January 2024. The Fourth Edition of the IBM SMCv2 Overview adds the SMC Version 2.1 feature updates for SMC-Dv2 with Emulated-ISM specifications.
- IBM Shared Memory Communications: Version 2 (Third Edition) was published in July 2023. The Third Edition of the IBM SMCv2 Overview adds the SMC Version 2.1 feature updates for SMC-Rv2 with RoCEv2 specifications.
[{"Line of Business":{"code":"LOB35","label":"Mainframe SW"},"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SSSN3L","label":"z\/OS Communications Server"},"ARM Category":[{"code":"a8m0z0000000AW3AAM","label":"z\/OS Comm Server"}],"ARM Case Number":"","Platform":[{"code":"PF035","label":"z\/OS"}],"Version":"2.4.0"}]
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Document Information
Modified date:
28 January 2024
UID
ibm16326337