ZyXEL Communications MES-2110 Guía de usuario Pagina 121
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Chapter 17 IP Source Guard
MES-2110 User’s Guide
121
17.2 DHCP Snooping Configuration
Use this screen to enable DHCP snooping on the Switch and specify whether ports
are trusted or untrusted ports for DHCP snooping. To open this screen, click
Configuration > DHCP Snooping > DHCP Snooping Configuration.
Figure 63 Configuration > DHCP Snooping > DHCP Snooping Configuration
The following table describes the labels in this screen.
Table 49 Configuration > DHCP Snooping > DHCP Snooping Configuration
LABEL DESCRIPTION
DHCP Snooping Configuration
Action Select Enable to have the Switch use DHCP snooping . You still
have to enable DHCP snooping on specific VLAN and specify
trusted ports.
Select Disable if you do not want to use this feature.
Note: If DHCP is enabled and there are no trusted ports,
DHCP requests will not succeed.
DHCP snooping VLAN
Mode
Select All-VLAN to have the Switch forward DHCP frames of any
VLANs to DHCP servers automatically.
Select Fixed to have the Switch forward DHCP frames of a
specific VLAN to DHCP servers.
- MES-2110 1
- About This User's Guide 3
- Customer Support 4
- Document Conventions 5
- Icons Used in Figures 6
- Safety Warnings 7
- Contents Overview 10
- MES-2110 User’s Guide 10
- Table of Contents 11
- Introduction and 17
- Hardware 17
- CHAPTER 1 19
- 1.1.2 Bridging Example 20
- 1.1.5 Metro Ethernet 22
- Figure 5 Metro Ethernet 23
- CHAPTER 2 25
- 2.3.1.1 Precautions 27
- CHAPTER 3 29
- 3.1.1 Console Port 30
- 3.1.3 Mini-GBIC Slots 31
- 3.1.3.2 Transceiver Removal 32
- 3.1.4 Power Connector 33
- 3.2 LEDs 34
- Basic Configuration 35
- CHAPTER 4 37
- (1234 by default) 38
- 4.3 The Main Screen 39
- LINK DESCRIPTION 42
- 4.5 Switch Lockout 45
- 4.6 Resetting the Switch 45
- Username: admin 46
- Password: 46
- MES-2110> enable 46
- MES-2110# reset default 46
- CHAPTER 5 47
- Chapter 5 System Details 50
- PART III 51
- CHAPTER 6 53
- Chapter 6 Configuration 54
- Chapter 6 Configuration 55
- Status screen as shown next 55
- 6.4 The RMON Status Screen 57
- CHAPTER 7 59
- Chapter 7 Loop Detection 61
- Chapter 7 Loop Detection 62
- CHAPTER 8 63
- Chapter 8 Jumbo Frame 64
- CHAPTER 9 65
- 9.1.2 Guest VLAN 66
- 9.6 Technical Reference 71
- CHAPTER 10 75
- 10.1.2 How STP Works 76
- 10.1.3 STP Port States 77
- Chapter 10 Bridge 79
- Chapter 10 Bridge 80
- CHAPTER 11 83
- 11.3 The VLAN Type Screen 85
- 11.5.1 VLAN Stacking 87
- 11.5.2 VLAN Stacking Example 87
- 11.5.4 VLAN Tag Format 89
- 11.5.5 Frame Format 89
- Table 32 802.1Q Frame 90
- Chapter 11 VLAN 91
- CHAPTER 12 95
- Chapter 12 Bandwidth Control 96
- CHAPTER 13 97
- CHAPTER 14 99
- Chapter 14 Port Mirroring 100
- LABEL DESCRIPTION 100
- CHAPTER 15 101
- 15.3 Static Trunking Example 102
- 15.6 LACP Link Status 105
- Chapter 15 Link Aggregation 106
- CHAPTER 16 107
- 16.2 IGMP Configuration 108
- Chapter 16 IGMP 109
- 16.3 IGMP Status 110
- 16.4 MVR Overview 110
- 16.4.1 Types of MVR Ports 111
- 16.4.2 MVR Modes 111
- 16.4.3 How MVR Works 111
- Chapter 16 IGMP 118
- CHAPTER 17 119
- Chapter 17 IP Source Guard 122
- 17.3 DHCP Binding Table 123
- CHAPTER 18 127
- MAC Table Configuration 128
- Chapter 18 MAC 131
- Chapter 18 MAC 134
- CHAPTER 19 135
- Chapter 19 QoS 137
- 19.4 The Tag Priority Table 139
- Chapter 19 QoS 142
- Management 143
- CHAPTER 20 145
- Table 62 SNMP Commands 147
- 20.4 The SNTP Screen 148
- 20.5 Alarms and Logs 150
- 20.7 The Cable Test Screen 152
- 20.8 The Host DoS Protection 153
- 20.10 Upgrading the Firmware 155
- 20.12 Restarting the System 156
- Troubleshooting & 159
- Product 159
- Specifications 159
- CHAPTER 21 161
- 21.2 Switch Access and Login 162
- CHAPTER 22 165
- FEATURE DESCRIPTION 166
- STANDARD DESCRIPTION 168
- Appendices and 169
- APPENDIX A 171
- Appendix A Changing a Fuse 172
- APPENDIX B 173
- Appendix B Common Services 174
- Appendix B Common Services 175
- APPENDIX C 177
- FCC Warning 178
- CE Mark Warning: 178
- Warning: 178
- Notices 178
- ZyXEL Limited Warranty 179
- Appendix C Legal Information 180
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