2.9 Common Configuration Errors.....................................................................................................................................68
2.9.1 Traffic Is Unevenly Load Balanced Among Eth-Trunk Member Interfaces Because the Load Balancing Mode Is
Incorrect..............................................................................................................................................................................68
2.10 References..................................................................................................................................................................68
3 VLAN Configuration..................................................................................................................70
3.1 Introduction to VLAN..................................................................................................................................................71
3.2 Principles......................................................................................................................................................................72
3.2.1 Basic Concepts of VLAN..........................................................................................................................................72
3.2.2 VLAN Assignment....................................................................................................................................................76
3.2.3 Principle of VLAN Communication..........................................................................................................................76
3.2.4 VLAN Aggregation...................................................................................................................................................81
3.2.5 VLAN Damping........................................................................................................................................................88
3.2.6 VLAN Management..................................................................................................................................................88
3.3 Application Environment.............................................................................................................................................88
3.3.1 VLAN Assignment....................................................................................................................................................89
3.3.2 Inter-VLAN Communication....................................................................................................................................90
3.3.3 VLAN Aggregation...................................................................................................................................................91
3.4 Configuration Task Summary......................................................................................................................................92
3.5 Default Configuration...................................................................................................................................................93
3.6 Configuring VLAN.......................................................................................................................................................93
3.6.1 Assigning a LAN to VLANs.....................................................................................................................................93
3.6.2 Configuring Inter-VLAN Communication................................................................................................................95
3.6.2.1 Configuring VLANIF Interfaces for Inter-VLAN Communication.......................................................................96
3.6.2.2 Configuring Sub-Interfaces for Inter-VLAN Communication...............................................................................97
3.6.2.3 Checking the Configuration....................................................................................................................................98
3.6.3 Configuring VLAN Aggregation to Save IP Addresses............................................................................................98
3.6.3.1 Creating a Sub-VLAN............................................................................................................................................98
3.6.3.2 Creating a Super-VLAN.........................................................................................................................................99
3.6.3.3 Assigning an IP Address to the VLANIF Interface of a Super-VLAN................................................................100
3.6.3.4 (Optional) Configuring an IP Address Pool for a Sub-VLAN.............................................................................101
3.6.3.5 (Optional) Enabling Proxy ARP on the VLANIF Interface of a Super-VLAN...................................................101
3.6.3.6 Checking the Configuration..................................................................................................................................102
3.6.4 Configuring an mVLAN to Implement Integrated Management............................................................................102
3.7 Configuration Examples.............................................................................................................................................104
3.7.1 Example for Configuring Interface-based VLAN Assignment...............................................................................104
3.7.2 Example for Configuring Communication Between VLANs Using VLANIF Interfaces......................................106
3.7.3 Example for Configuring VLAN Damping.............................................................................................................108
3.7.4 Example for Configuring VLAN Aggregation........................................................................................................110
3.7.5 Example for Configuring Communication Across a Layer 3 Network Using VLANIF Interfaces........................113
3.8 Common Configuration Errors...................................................................................................................................116
3.8.1 User Terminals in the Same VLAN Cannot Ping Each Other.................................................................................117
Huawei AR530&AR550 Series Industrial Switch Routers
Configuration Guide - Ethernet Switching
Contents
Issue 01 (2014-11-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
vii
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