Black Box LGB1005A-R2 Technical Information Page 203
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processed as follows:
* If the DHCP packet is a reply packet from a DHCP server, the packet
is dropped.
* If the DHCP packet is from a client, such as a DISCOVER, REQUEST
INFORM, DECLINE or RELEASE message, the packet is forwarded if
MAC address verification is disabled. However, if MAC address
verification is enabled, then the packet will only be forwarded if the
client’s hardware address stored in the DHCP packet is the same as
the source MAC address in the Ethernet header.
* If the DHCP packet is not a recognizable type, it is dropped.
- If a DHCP packet from a client passes the filtering criteria above, it
will only be forwarded to trusted ports in the same VLAN.
- If a DHCP packet is from server is received on a trusted port, it will
be forwarded to both trusted and un-trusted ports in the same VLAN.
3-17-3. DHCP Snooping Client
Function name:
DHCP Snooping Client
Function description:
To show the DHCP snooping client.
Fig. 3-17-2 DHCP Snooping Client
Parameter description:
MAC： To show the DHCP snooping client’s MAC address.
VID： To show the DHCP snooping client’s VLAN ID.
Port：To show the DHCP snooping client’s port.
IP：To show the DHCP snooping client’s IP address.
Lease：To show the DHCP snooping client’s lease.
- L2 Plus Managed Switch 3
- Table of Contents 5
- Revision History 8
- Caution 9
- Electronic Emission Notices 9
- About this user’s manual 10
- 1. Introduction 11
- Key Features in the Device 12
- 1-2. Checklist 14
- 1-3. Features 14
- LED Color Function 17
- 2. Installation 19
- Fig. 2-2 21
- Table 2-3 28
- Ethernet LAN 29
- 2-1-5. IP Address Assignment 30
- 1 0000000 32
- 1 1111111 32
- Fig. 2-12 34
- 2-2. Typical Applications 35
- 3. Operation of 37
- Web-based Management 37
- Fig. 3-1 38
- Fig. 3-2 39
- 3-1-1. System Information 42
- Fig. 3-4 43
- 3-1-2. Account Configuration 44
- 3-1-3. Time Configuration 45
- Fig. 3-6 47
- 3-1-4. IP Configuration 48
- 3-1-5. Loop Detection 51
- 3-1-6. Management Policy 52
- Fig. 3-9 53
- Fig. 3-10 53
- 3-1-7. Virtual Stack 55
- Desc: 58
- 3-2-1. Port Configuration 60
- 3-2-2.Port Status 62
- Fig. 3-14 63
- 3-2-3. Simple Counter 65
- Auto-refresh: 66
- 3-2-4. Detail Counter 67
- “Clear” button 70
- 3-3. VLAN 71
- 3-3-2. Tag-based Group 72
- 3-3-3. Port-based Group 75
- Fig. 3-23 76
- 3-3-4. Ports 77
- Fig. 3-24 78
- 3-3-5. Management 79
- 3-4. MAC 80
- Fig. 3-26 81
- 3-4-2. Static Filter 82
- 3-4-3. Static Forward 83
- 3-4-4. MAC Alias 84
- 3-4-5. MAC Table 85
- 3-5. GVRP 86
- Fig. 3-31 88
- 3-5-2. Counter 89
- 3-5-3. Group 91
- 3-6-1. Ports 92
- Fig. 3-34 93
- 3-6-2. Qos Control List 94
- Fig. 3-42 97
- 3-6-3.Rate Limiters 100
- 3-6-4.Storm Control 102
- 3-6-5.Wizard 103
- Set up Port Policies Finish 105
- Fig. 3-51 106
- 3-7. SNMP Configuration 113
- 3-8. ACL 115
- Fig. 3-64 116
- 3-8-2.Rate Limiters 117
- 3-8-3.Access Control List 118
- Ingress Port 119
- Fig. 3-69 Frame Type 120
- Fig. 3-70 121
- Fig. 3-118 Rate Limiter 135
- Fig. 3-119 Port Copy 135
- 3-8-4.Wizard 147
- Set up Port Policies 149
- Fig. 3-138 153
- 3-9. IP MAC Binding 156
- 3-10. 802.1X Configuration 158
- MAC Enable 159
- Port Authorize 159
- Fig. 3-54 160
- Table 3-3 162
- 3-10-1.Server 163
- ForceUnauthorized: 165
- ForceAuthorized: 165
- 3-10-3.Status 167
- Fig. 3-145 802.1X Status 168
- 3-10-4. Statistics 169
- 3-11. Trunking Configuration 170
- 3-11-1.Port 172
- 173
- Fig.3-147 Trunk Port Setting 173
- 3-11-2 Aggregator View 174
- 3-11-3 ACP System Priority 175
- 3-12 STP Configuration 176
- Fig. 3-150 STP Status 177
- 3-12-2. Configuration 178
- 3-13-1 Status 183
- 3-13-2 Region Config 184
- Fig. 3-156 185
- Fig. 3-157 185
- Fig. 3-158 185
- Fig. 3-159 185
- Fig. 3-160 185
- Fig. 3-156 Edit MSTI / Vlan 186
- Fig. 3-157 Instance Config 187
- Fig. 3-158 Port Config 188
- Fig. 3-159 Instance Status 189
- Fig. 3-160 Port Status 191
- 3-14. Mirror 193
- 3-15. IGMP Snooping 195
- 3-15-2 Group Membership 197
- Fig.3-61 198
- 3-16-1 Events 199
- 3-17-1. DHCP Snooping State 201
- 3-17-2. DHCP Snooping Entry 202
- 3-17-3. DHCP Snooping Client 203
- 3-18. Configuration 204
- 3-18-1. Factory Defaults 205
- 3-18-2 . Save Start 205
- 3-18-3 . Save User 205
- 3-18-4 . Restore User 206
- 3-19. Config File 207
- 3-20. Diagnostics 208
- 3-20-2 .Ping 209
- 3-20-2 .VeriPHY 210
- 3-21 Maintenance 211
- 3-22 Logout 212
- 4. Operation of CLI 213
- Management 213
- LGB1005A-R2 214
- 4-2. Commands of CLI 215
- 802.1X 222
- account 227
- alarm 233
- autologout 238
- config-file 239
- firmware 239
- hostname 244
- ip_mac_binding 248
- loop-detection 249
- <<alias>> 251
- <<mac-table>> 253
- <<maintenance>> 254
- <<static-mac>> 257
- mirror 259
- per port restricted role 265
- policy 270
- <<ports>> 280
- <<qcl>> 281
- <<rate>> 283
- reboot 285
- <<disable>> 286
- <<enable>> 286
- <<set>> 286
- system 293
- traplog 294
- trunk 297
- 5. Maintenance 306
- Appendix A 307
- Technical Specifications 307
- Hardware Specifications 308
- Appendix B 311
- Null Modem Cable 311
- Specifications 311
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