IEEE P802.1Qcz:2023 Edition

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IEEE Approved Draft Standard for Local and Metropolitan Area Networks–Bridges and Bridged Networks — Amendment 35: Congestion Isolation

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IEEE	2023

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Description

Amendment Standard – Active – Draft. This amendment to IEEE Std 802.1Q™-2022 specifies protocols, procedures and managed objects that support the isolation of congesting data flows within data center environments.

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PDF Pages	PDF Title
1	Front cover
2	Title page
8	Participants
10	Introduction
11	Contents
14	Figures
15	Tables
16	Title page
17	1. Overview 1.3 Introduction
18	2. Normative references
19	3. Definitions
20	4. Abbreviations
21	5. Conformance 5.4 VLAN Bridge component requirements 5.4.1 VLAN Bridge component options 5.4.1.6 ETS Bridge requirements 5.4.7 VLAN Bridge requirements for congestion isolation (optional)
22	5.32 End station requirements for congestion isolation
23	6. Support of the MAC Service 6.10 Support of the ISS/EISS by PIPs 6.10.1 Data indications
24	8. Principles of Bridge operation 8.6 The Forwarding Process 8.6.5 Flow classification and metering
25	8.6.5.2 Per-stream classification and metering 8.6.5.2.3 CI Support
26	8.6.5.3 Stream filtering 8.6.5.4 Stream gating
27	8.6.5.5 Flow metering 8.6.6 Queuing frames 8.6.8 Transmission selection 8.6.8.6 Enhancements for congestion isolation
28	12. Bridge management 12.1 Management functions 12.1.1 Configuration Management 12.2 VLAN Bridge objects 12.31 Managed objects for per-stream classification and metering 12.31.1 The Stream Parameter Table
29	12.31.2 The Stream Filter Instance Table
30	12.31.2.2 stream_handle specification data type 12.31.3 The Stream Gate Instance Table
31	12.33 Congestion Isolation managed objects
32	12.33.1 CI entity managed object 12.33.2 CI Peer Table 12.33.3 CI Stream Table
33	12.33.4 CIP entity managed object
34	30. Principles of congestion notification 30.1 Congestion notification design requirements 30.3 Congestion Controlled Flow (CCF)
35	46. Time-Sensitive Networking (TSN) configuration 46.2 User/network configuration information 46.2.1 Data types 46.2.3 Talker 46.2.3.4 DataFrameSpecification 46.2.3.4.4 IPv6-tuple
36	48. YANG Data Models 48.2 IEEE 802.1Q YANG models 48.2.8 Congestion Isolation (CI) model
37	48.3 Structure of the YANG models 48.3.7 Asynchronous Traffic Shaping (ATS) model
38	48.3.8 Congestion Isolation (CI) model
39	48.4 Security considerations 48.4.8 Security considerations of the Congestion Isolation model
40	48.5 YANG schema tree definitions 48.5.11 Schema for the ieee802-dot1q-stream-filters-gates YANG module 48.5.12 Schema for the ieee802-dot1q-stream-filters-gates-bridge YANG module
41	48.5.13 Schema for the ieee802-dot1q-ats YANG module 48.5.14 Schema for the ieee802-dot1q-ats-bridge YANG module
42	48.5.15 Schema for the ieee802-dot1q-congestion-isolation YANG module
43	48.5.16 Schema for the ieee802-dot1q-congestion-isolation-bridge YANG module
44	48.6 YANG modules 48.6.2 The ieee802-dot1q-types YANG module
59	48.6.11 The ieee802-dot1q-stream-filters-gates YANG module
65	48.6.12 The ieee802-dot1q-stream-filters-gates-bridge YANG module
66	48.6.13 The ieee802-dot1q-ats YANG module
71	48.6.14 The ieee802-dot1q-ats-bridge YANG module
73	48.6.15 The ieee802-dot1q-congestion-isolation YANG module
81	48.6.16 The ieee802-dot1q-congestion-isolation-bridge YANG module
83	49. Congestion Isolation
84	49.1 Congestion isolation objectives
85	49.2 Principles of congestion isolation
86	49.2.1 Congesting flow identification 49.2.2 IEEE Std 802.1CB stream identification 49.2.3 Flow priority modification 49.2.4 Priority-based Flow Control interaction
87	49.2.5 Congestion isolation signaling 49.2.6 Congesting to non-congesting status change
88	49.2.7 System topology and port orientation 49.2.8 Comparison to Congestion Notification
89	49.3 The Congestion Isolation Aware Forwarding Process
90	49.3.1 CIP Congestion Detection 49.3.2 CIP transmission gates 49.3.3 CIM Demultiplexer 49.3.4 Congesting flow identification 49.3.5 CIM Multiplexer
91	49.3.6 CI Peer Table 49.3.7 CI Stream Table 49.4 Congestion Isolation Protocol 49.4.1 Variables controlling operation 49.4.1.1 CI entity variables 49.4.1.1.1 ciMasterEnable 49.4.1.1.2 ciCIMTransmitPriority
92	49.4.1.1.3 ciMaxFlowLife 49.4.1.2 CIP entity variables 49.4.1.2.1 cipMacAddress 49.4.1.2.2 cipIPv4Address 49.4.1.2.3 cipIPv6Address 49.4.1.2.4 cipCIMUDPPort 49.4.1.2.5 cipQueueMap[]
93	49.4.1.2.6 cipMinHeaderOctets 49.4.1.2.7 cipMaxCIM 49.4.1.3 CIP entity per-port variables 49.4.1.3.1 ciRxPort 49.4.1.3.2 ciAddDel 49.4.1.4 CIP entity per-port per-traffic class variables
94	49.4.1.4.1 cipGateControl 49.4.1.4.2 cipNonCongestedTime 49.4.1.4.3 cipCongesting 49.4.1.5 CIP entity per-stream variables 49.4.1.5.1 ciStreamIdHandle 49.4.1.5.2 ciCIMCount
95	49.4.1.5.3 ciCreateTime 49.4.1.5.4 ciStreamCreateMask 49.4.1.5.5 ciQueueKey 49.4.1.5.6 ciDestination_address 49.4.1.5.7 ciSource_address 49.4.1.5.8 ciVlan_identifier 49.4.1.5.9 ciMsdu 49.4.2 CIP procedures
96	49.4.2.1 ciInitialize() 49.4.2.2 EM_UNITDATA.request (parameters)
98	49.4.2.3 condTransmitCimAddPdu() 49.4.2.4 transmitCimDelPdu() 49.4.2.5 buildAndSendCim()
100	49.4.2.6 processCimPdu() 49.4.2.7 addCongestingFlow()
101	49.4.2.8 delCongestingFlow() 49.4.2.9 flushCongestingFlows()
102	49.4.2.10 periodicTableCleanup() 49.4.3 Encoding of the CIM PDU
103	49.4.3.1 Layer-2 CIM PDU encapsulation 49.4.3.1.1 .Version 49.4.3.1.2 Subtype 49.4.3.2 IPv4 layer-3 CIM PDU encapsulation
104	49.4.3.3 IPv6 layer-3 CIM PDU encapsulation 49.4.3.4 Congestion Isolation Message PDU format 49.4.3.4.1 Version 49.4.3.4.2 Reserved 49.4.3.4.3 Add/Del 49.4.3.4.4 destination_address
105	49.4.3.4.5 source_address 49.4.3.4.6 vlan_identifier 49.4.3.4.7 Encapsulated MSDU length 49.4.3.4.8 Encapsulated MSDU 49.4.3.5 CIM Validation 49.4.4 LLDP Congestion Isolation TLV 49.4.4.1 LLDP Congestion Isolation TLV procedures
106	49.4.4.1.1 addCiPeer() 49.4.4.1.2 delCiPeer() 49.5 Topology Recognition 49.5.1 TR theory of operation
107	49.5.2 TR variables controlling operation 49.5.2.1 trDeviceType 49.5.2.2 trLevel 49.5.2.3 trPortOrientation 49.5.3 TR procedures
108	49.5.3.1 trInit() 49.5.3.2 trSet() 49.5.3.3 trUpdate()
109	Annex A (normative) PICS proforma—Bridge implementations A.5 Major capabilities A.7 Relay and filtering of frames
110	A.14 Bridge management
111	A.47 YANG
112	A.53 Congestion Isolation
113	Annex B (normative) PICS proforma—End station implementations B.5 Major capabilities B.19 Congestion Isolation
114	Annex D (normative) IEEE 802.1 Organizationally Specific TLVs D.1 Requirements of the IEEE 802.1 Organizationally Specific TLV sets D.2 Organizationally Specific TLV definitions D.2.15 Congestion Isolation TLV D.2.15.1 TLV type
115	D.2.15.2 TLV information string length D.2.15.3 Queue Map D.2.15.4 CIM Encap Length D.2.15.5 MAC Address D.2.15.6 UDP Port Number D.2.15.7 Address Family D.2.15.8 IP Address
116	D.2.15.9 Congestion Isolation TLV usage rules D.2.16 Topology Recognition TLV D.2.16.1 TLV Type D.2.16.2 TLV information string length D.2.16.3 Device Type
117	D.2.16.4 Topology Level D.2.16.5 Port Orientation D.3 IEEE 802.1 Organizationally Specific TLV management D.3.2 IEEE 802.1 managed objects—TLV variables D.3.2.11 Congestion Isolation TLV managed objects D.3.2.12 Topology Recognition TLV managed objects
118	D.4 PICS proforma for IEEE 802.1 Organizationally Specific TLV extensions D.4.3 Major capabilities and options
119	D.5 IEEE 802.1/LLDP extension MIB D.5.2 Structure of the IEEE 802.1/LLDP extension MIB
120	D.5.4 Security considerations for IEEE 802.1 LLDP extension MIB module
122	D.5.5 IEEE 802.1 LLDP extension MIB module—version 2
194	D.6 IEEE 802.1/LLDP extension YANG D.6.1 YANG framework D.6.2 IEEE 802.1 Organizationally Specific TLV YANG data models D.6.2.1 IEEE 802.1/LLDP extension basicSet TLV model
195	D.6.2.2 IEEE 802.1/LLDP extension cnSet YANG model
196	D.6.2.3 IEEE 802.1/LLDP extension dcbxSet YANG model
197	D.6.2.4 IEEE 802.1/LLDP extension evbSet YANG model
198	D.6.2.5 IEEE 802.1/LLDP extension ciSet TLV model D.6.2.6 IEEE 802.1/LLDP extension trSet TLV model
199	D.6.3 Structure of the IEEE 802.1/LLDP extension YANG models
200	D.6.4 Security considerations D.6.4.1 Security considerations of the ieee802-dot1q-lldp-basic-tlv YANG module D.6.4.2 Security considerations of the ieee802-dot1q-lldp-cn-tlv YANG module D.6.4.3 Security considerations of the ieee802-dot1q-lldp-dcbx-tlv YANG module
201	D.6.4.4 Security considerations of the ieee802-dot1q-lldp-evb-tlv YANG module D.6.4.5 Security considerations of the ieee802-dot1q-lldp-ci-tlv YANG module D.6.4.6 Security considerations of the ieee802-dot1q-lldp-tr-tlv YANG module D.6.5 Definition of the IEEE 802.1/LLDP extension YANG modules D.6.5.1 Schema for the ieee802-dot1q-lldp-basic-tlv YANG module
202	D.6.5.2 Schema for the ieee802-dot1q-lldp-cn-tlv YANG module D.6.5.3 Schema for the ieee802-dot1q-lldp-dcbx-tlv YANG module
204	D.6.5.4 Schema for the ieee802-dot1q-lldp-evb-tlv YANG module D.6.5.5 Schema for the ieee802-dot1q-lldp-ci-tlv YANG module D.6.5.6 Schema for the ieee802-dot1q-lldp-tr-tlv YANG module
205	D.6.6 IEEE 802.1/LLDP extension YANG modules D.6.6.1 The ieee802-dot1q-lldp-basic-tlv YANG module
209	D.6.6.2 The ieee802-dot1q-lldp-cn-tlv YANG module
211	D.6.6.3 The ieee802-dot1q-lldp-dcbx-tlv YANG module
219	D.6.6.4 The ieee802-dot1q-lldp-evb-tlv YANG module
220	D.6.6.5 The ieee802-dot1q-lldp-ci-tlv YANG module
223	D.6.6.6 The ieee802-dot1q-lldp-tr-tlv YANG module
226	Annex W (informative) Maintaining frame order with Congestion Isolation
228	W.1 Queue markers for order preservation
230	W.2 Congestion Isolation queuing and Priority-based Flow Control
233	Annex X (informative) Bibliography
237	Back cover

Additional information

Standard Title	IEEE Approved Draft Standard for Local and Metropolitan Area Networks–Bridges and Bridged Networks — Amendment 35: Congestion Isolation
Published Code	IEEE
Publication Date	2023

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