ZyXEL Communications ES-2024A - Page 12

ES-2024A User’s Guide
Table of Contents 11
Chapter 20
Differentiated Services........................................................................................ 109
20.1 Overview ........................................................................................................ 109
20.1.1 DSCP and Per-Hop Behavior .............................................................. 109
20.1.2 DiffServ Network Example .................................................................. 109
20.2 Activating DiffServ ....................................................................................... 110
20.3 DSCP-to-IEEE802.1p Priority Mapping .....................................................111
20.3.1 Configuring DSCP Settings ...................................................................111
Chapter 21
Maintenance ..........................................................................................................113
21.1 The Maintenance Screen ............................................................................. 113
21.2 Firmware Upgrade ...................................................................................... 114
21.3 Restore a Configuration File ........................................................................ 114
21.4 Backing Up a Configuration File .................................................................. 115
21.5 Load Factory Defaults ................................................................................. 115
21.6 Reboot System ............................................................................................ 116
21.7 FTP Command Line ...................................................................................... 116
21.7.1 Filename Conventions ........................................................................ 116
21.7.1.1 Example FTP Commands .......................................................... 117
21.7.2 FTP Command Line Procedure .......................................................... 117
21.7.3 GUI-based FTP Clients ........................................................................ 118
21.7.4 FTP over WAN Restrictions ................................................................ 118
Chapter 22
Access Control......................................................................................................119
22.1 Overview ...................................................................................................... 119
22.2 The Access Control Main Screen .................................................................. 119
22.3 About SNMP ................................................................................................ 120
22.3.1 Supported MIBs ................................................................................. 121
22.3.2 SNMP Traps ....................................................................................... 121
22.3.3 Configuring SNMP .............................................................................. 121
22.4 Setting Up Login Accounts ......................................................................... 122
22.5 SSH Overview ............................................................................................... 123
22.6 How SSH works ............................................................................................. 124
22.7 SSH Implementation on the Switch ............................................................... 125
22.7.1 Requirements for Using SSH ............................................................... 125
22.7.2 SSH Login Example ............................................................................. 125
22.8 Introduction to HTTPS ................................................................................... 126
22.9 HTTPS Example ............................................................................................ 127
22.9.1 Internet Explorer Warning Messages ................................................... 127
22.9.2 Netscape Navigator Warning Messages .............................................. 128
22.9.3 The Main Screen .................................................................................. 129