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Link Aggregation, MLT, and SMLT Release: 7.0 Document Revision: 03.02

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Link Aggregation, MLT, and SMLT Release: 7.0 Document Revision: 03.02 Nortel Ethernet Routing Switch 8600 Configuration — Link Aggregation, MLT, and SMLT Release: 7.0 Document Revision: 03.02 www.nortel.com .NN46205-518 Nortel Ethernet Routing Switch 8600 Release: 7.0 Publication: NN46205-518 Document release date: 12 April 2010 Copyright © 2008-2010 Nortel Networks. All Rights Reserved. While the information in this document is believed to be accurate and reliable, except as otherwise expressly agreed to in writing NORTEL PROVIDES THIS DOCUMENT "AS IS" WITHOUT WARRANTY OR CONDITION OF ANY KIND, EITHER EXPRESS OR IMPLIED. The information and/or products described in this document are subject to change without notice. THE SOFTWARE DESCRIBED IN THIS DOCUMENT IS FURNISHED UNDER A LICENSE AGREEMENT AND MAY BE USED ONLY IN ACCORDANCE WITH THE TERMS OF THAT LICENSE. Nortel, Nortel Networks, the Nortel logo, and the Globemark are trademarks of Nortel Networks. All other trademarks are the property of their respective owners. 3 . Contents Software license 7 New in this release 11 Features 11 Enterprise Device Manager 11 Other changes 11 Classic modules 11 Changes in revision 03.02 11 8695 SF/CPU renamed to 8895 SF/CPU 12 Introduction 13 Link aggregation fundamentals 15 Link aggregation overview 15 MultiLink Trunking 16 MLT traffic distribution algorithm 17 Multicast flow distribution over MLT 18 MLT and MLT with LACP configuration rules 23 LAG rules 25 MultiLink Trunking with LACP 25 IEEE 802.3ad overview 25 802.3ad link aggregation principles 27 Split MultiLink Trunking 28 SMLT overview 29 SMLT versus STP 30 SMLT topologies 31 SMLT and Interswitch trunking 31 SMLT and IST traffic flow example 34 SMLT-on-Single-CPU feature 36 Single Port SMLT 37 MLT-based SMLT with Single Port SMLT 39 SMLT and LACP support 41 SMLT and IP routing 42 SMLT and SLPP 43 SMLT/RSMLT operational improvements 43 Nortel Ethernet Routing Switch 8600 Configuration — Link Aggregation, MLT, and SMLT NN46205-518 03.02 12 April 2010 Copyright © 2008-2010 Nortel Networks. All Rights Reserved. 4 Additional SMLT considerations 45 Virtual Link Aggregation Control Protocol 47 VLACP timers and sub-100-ms core convergence 49 VLACP considerations 50 LACP and Minimum Link 51 MinLink requirements 51 MinLink operations 51 MinLink considerations 52 Link aggregation configuration considerations 52 MLT with LACP configuration considerations 52 MLT with LACP and SMLT configuration considerations 53 MLT with LACP and Spanning Tree configuration considerations 55 LACP parameters configuration considerations 55 Link aggregation and scaling 57 Link aggregation configuration using Enterprise Device Manager 59 Configuring global LACP parameters 59 Configuring LACP parameters 61 Configuring LACP on a port 63 MLT and SMLT link aggregation configuration using Enterprise Device Manager 71 Adding a MultiLink/LACP trunk 71 Adding ports to an MLT 75 Adding an MLT-based SMLT 75 Viewing MLT-based SMLTs 77 Adding ports to an MLT-based SMLT 78 Configuring an IST MLT 78 Editing an IST 79 Configuring a single port SMLT 80 Viewing Single Port SMLTs 81 Deleting a Single Port SMLT 82 VLACP configuration using Enterprise Device Manager 85 Enabling VLACP globally 85 Configuring VLACP on a port 86 Link aggregation configuration using the CLI 89 Job aid: Roadmap of LACP commands 90 Configuring global LACP parameters 91 Configuring LACP on a port 92 LACP show commands 95 Viewing global LACP configuration information 95 Viewing LACP configuration information 96 Nortel Ethernet Routing Switch 8600 Configuration — Link Aggregation, MLT, and SMLT NN46205-518 03.02 12 April 2010 Copyright © 2008-2010 Nortel Networks. All Rights Reserved. 5 MLT and SMLT link aggregation configuration using the CLI 99 Job aid: Roadmap of MLT and SMLT commands 100 Configuring an MLT 101 Adding ports to an MLT LAG 102 Procedure job aid: Example of adding ports to an MLT LAG 103 Removing ports from an MLT LAG 103 Viewing MLT LACP configuration information for aggregators 104 Configuring LACP on an MLT 105 Creating a SMLT from an existing MLT 106 Creating an interswitch trunk 107 Creating an interswitch trunk from an existing MLT 108 Procedure job aid: Example of creating an interswitch trunk from an existing MLT 109 Enabling and disabling an interswitch trunk 109 Deleting an interswitch trunk 109 Configuring a single port SMLT 110 Configuring SMLT-on-Single-CPU 111 Viewing the MLT port calculated by the MLT hash algorithm 112 MLT and SMLT show commands 113 Viewing MLT information 113 Viewing information about collision errors 114 Viewing information about Ethernet errors 114 Viewing MLT status 115 Viewing interswitch trunk status 115 Viewing SMLT status 116 Viewing all ports configured for single port SMLT 116 Viewing a port configured for Single Port SMLT 117 VLACP configuration using the CLI 119 Job aid: Roadmap of VLACP commands 119 Configuring VLACP on a port 120 Viewing VLACP port configuration 122 Enabling or disabling VLACP 122 Link aggregation configuration using the NNCLI 123 Job aid: Roadmap of LACP commands 124 Configuring global LACP parameters 125 Configuring LACP on a port 127 LACP show commands 129 Viewing LACP configuration information 129 MLT and SMLT link aggregation configuration using the NNCLI 131 Job aid: Roadmap of MLT and SMLT commands 131 Configuring an MLT 132 Nortel Ethernet Routing Switch 8600 Configuration — Link Aggregation, MLT, and SMLT NN46205-518 03.02 12 April 2010 Copyright © 2008-2010 Nortel Networks. All Rights Reserved. 6 Adding ports to an MLT LAG 133 Removing ports from an MLT LAG 133 Configuring LACP on an MLT 134 Creating a SMLT from an existing MLT 135 Creating an interswitch trunk 136 Enabling an interswitch trunk 137 Deleting an interswitch trunk 137 Job aid: Example of deleting an interswitch trunk 138 Configuring a single port SMLT 138 Configuring SMLT-on-Single-CPU 139 Viewing the MLT port calculated by the MLT hash algorithm 139 MLT and SMLT show commands 140 Viewing information about collision errors 141 Viewing information about Ethernet errors 141 Viewing all ports configured for single port SMLT 142 VLACP configuration using the NNCLI 145 Job aid: Roadmap of VLACP commands 145 Configuring VLACP on a port 146 Viewing the VLACP port configuration 147 Enabling or disabling VLACP globally 148 MLT and MLT with LACP CLI configuration examples 151 Navigation 151 MultiLink Trunking configuration example 151 Multilink with LACP configuration example 153 Nortel Ethernet Routing Switch 8600 Configuration — Link Aggregation, MLT, and SMLT NN46205-518 03.02 12 April 2010 Copyright © 2008-2010 Nortel Networks. All Rights Reserved. 7 . Software license This section contains the Nortel Networks software license. Nortel Networks Inc. software license agreement This Software License Agreement ("License Agreement") is between you, the end-user ("Customer") and Nortel Networks Corporation and its subsidiaries and affiliates ("Nortel Networks"). PLEASE READ THE FOLLOWING CAREFULLY. YOU MUST ACCEPT THESE LICENSE TERMS IN ORDER TO DOWNLOAD AND/OR USE THE SOFTWARE. USE OF THE SOFTWARE CONSTITUTES YOUR ACCEPTANCE OF THIS LICENSE AGREEMENT. If you do not accept these terms and conditions, return the Software, unused and in the original shipping container, within 30 days of purchase to obtain a credit for the full purchase price. "Software" is owned or licensed by Nortel Networks, its parent or one of its subsidiaries or affiliates, and is copyrighted and licensed, not sold. Software consists of machine-readable instructions, its components, data, audio-visual content (such as images, text, recordings or pictures) and related licensed materials including all whole or partial copies. Nortel Networks grants you a license to use the Software only in the country where you acquired the Software. You obtain no rights other than those granted to you under this License Agreement. You are responsible for the selection of the Software and for the installation of, use of, and results obtained from the Software. 1. Licensed Use of Software. Nortel Networks grants Customer a nonexclusive license to use a copy of the Software on only one machine at any one time or to the extent of the activation or authorized usage level, whichever is applicable. To the extent Software is furnished for use with designated hardware or Customer furnished equipment ("CFE"), Customer is granted a nonexclusive license to use Software only on such hardware or CFE, as applicable. Software contains trade secrets and Customer agrees to treat Software as confidential information using the same care and discretion Customer uses with its own similar information that it does not wish to disclose, publish or disseminate. Customer will ensure that anyone who uses the Software does so only in compliance with the terms Nortel Ethernet Routing Switch 8600 Configuration — Link Aggregation, MLT, and SMLT NN46205-518 03.02 12 April 2010 Copyright © 2008-2010 Nortel Networks. All Rights Reserved. 8 Software license of this Agreement. Customer shall not a) use, copy, modify, transfer or distribute the Software except as expressly authorized; b) reverse assemble, reverse compile, reverse engineer or otherwise translate the Software; c) create derivative works or modifications unless expressly authorized; or d) sublicense, rent or lease the Software. Licensors of intellectual property to Nortel Networks are beneficiaries of this provision. Upon termination or breach of the license by Customer or in the event designated hardware or CFE is no longer in use, Customer will promptly return the Software to Nortel Networks or certify its destruction. Nortel Networks may audit by remote polling or other reasonable means to determine Customer’s Software activation or usage levels. If suppliers of third party software included in Software require Nortel Networks to include additional or different terms, Customer agrees to abide by such terms provided by Nortel Networks with respect to such third party software. 2. Warranty. Except as may be otherwise expressly agreed to in writing between Nortel Networks and Customer, Software is provided "AS IS" without any warranties (conditions) of any kind.
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