7.5 Configuration Examples.................................................................................................................................137

7.5.1 Example for Configuring UDP Helper..................................................................................................137

8 DNS Configuration...................................................................................................................140

8.1 Introduction to DNS.......................................................................................................................................141

8.2 DNS Supported by the S9300&S9300E.........................................................................................................141

8.3 Configuring DNS............................................................................................................................................141

8.3.1 Establishing the Configuration Task.....................................................................................................141

8.3.2 Configuring Static DNS Entries............................................................................................................142

8.3.3 Configuring Dynamic DNS...................................................................................................................142

8.3.4 Checking the Configuration...................................................................................................................143

8.4 Maintaining DNS............................................................................................................................................144

8.4.1 Clearing DNS Entries............................................................................................................................144

8.4.2 Monitoring Network Operation Status of DNS.....................................................................................145

8.4.3 Debugging DNS....................................................................................................................................145

8.5 Configuration Examples.................................................................................................................................146

8.5.1 Example for Configuring DNS..............................................................................................................146

9 Basic Configurations of IPv6...................................................................................................150

9.1 Introduction to IPv6........................................................................................................................................151

9.2 IPv6 Features Supported by the S9300&S9300E...........................................................................................151

9.3 Configuring an IPv6 Address for an Interface................................................................................................153

9.3.1 Establishing the Configuration Task.....................................................................................................153

9.3.2 Enabling IPv6 Packet Forwarding Capability.......................................................................................154

9.3.3 Configuring an IPv6 Link-Local Address for an Interface....................................................................154

9.3.4 Configuring an IPv6 Global Unicast Address for an Interface..............................................................155

9.3.5 Checking the Configuration...................................................................................................................156

9.4 Configuring IPv6 Neighbor Discovery...........................................................................................................156

9.4.1 Establishing the Configuration Task.....................................................................................................156

9.4.2 Configuring Static Neighbors................................................................................................................157

9.4.3 Enabling RA Message Advertising.......................................................................................................158

9.4.4 Setting the Interval for Advertising RA Messages................................................................................158

9.4.5 Enabling Stateful Auto Configuration...................................................................................................159

9.4.6 Configuring the Address Prefixes to Be Advertised.............................................................................159

9.4.7 Configuring Other Information to Be Advertised.................................................................................160

9.4.8 Checking the Configuration...................................................................................................................162

9.5 Configuring TCP6..........................................................................................................................................163

9.5.1 Establishing the Configuration Task.....................................................................................................163

9.5.2 Configuring TCP6 Timers.....................................................................................................................163

9.5.3 Configuring the Size of the TCP6 Sliding Window..............................................................................164

9.5.4 Checking the Configuration...................................................................................................................164

9.6 Maintaining IPv6............................................................................................................................................166

Issue 01 (2012-03-15)

Huawei Proprietary and Confidential

Contents

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Table of Contents