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Hodnocené. / 5. Na základě hodnocení zákazníků
Chapter 38 ARP Setup
XS1920 Series User’s Guide
314
ICMP reply from host B, it sends out an ARP request to get host A’s MAC address and updates the
ARP table with host A’s ARP reply. The Switch then can forward host B’s ICMP reply to host A.
38.1.2.2 Gratuitous-ARP
A gratuitous ARP is an ARP request in which both the source and destination IP address fields are
set to the IP address of the device that sends this request and the destination MAC address field is
set to the broadcast address. There will be no reply to a gratuitous ARP request.
A device may send a gratuitous ARP packet to detect IP collisions. If a device restarts or its MAC
address is changed, it can also use gratuitous ARP to inform other devices in the same network to
update their ARP table with the new mapping information.
In Gratuitous-ARP learning mode, the Switch updates its ARP table with either an ARP reply or a
gratuitous ARP request.
38.1.2.3 ARP-Request
When the Switch is in ARP-Request learning mode, it updates the ARP table with both ARP replies,
gratuitous ARP requests and ARP requests.
A
B
ARP Request
ARP Reply
ICMP Request
ARP Request
ARP Reply
ICMP Request
ICMP Reply
ARP Request
ARP Reply
ICMP Reply
- XS1920 Series 1
- User’s Guide 1
- IMPORTANT! 2
- READ CAREFULLY BEFORE USE 2
- Contents Overview 3
- Chapter 9 7
- Table of Contents 10
- XS1920 Series User’s Guide 10
- Table of Contents 11
- CHAPTER 1 18
- 1.1.2 Bridging Example 19
- CHAPTER 2 22
- CHAPTER 3 25
- 3.1.2 SFP/SFP+ Slots 26
- 3.1.2.2 Transceiver Removal 27
- 3.2 Rear Panel 28
- 3.3 LEDs 29
- Technical Reference 31
- CHAPTER 4 32
- 4.3 The Status Screen 33
- LINK DESCRIPTION 35
- 4.5 Switch Lockout 37
- 4.6 Resetting the Switch 38
- 4.8 Help 38
- CHAPTER 5 39
- 5.1.2 Setting Port VID 40
- 5.2 Configuring Switch 41
- Management IP Address 41
- CHAPTER 6 43
- 6.3.2 Creating a VLAN 47
- 6.3.3 Configuring DHCP Relay 49
- 6.3.4 Troubleshooting 50
- CHAPTER 7 51
- 7.3 Neighbor Screen 52
- 7.4 Port Status Summary 53
- CHAPTER 8 58
- 8.3 General Setup 60
- 8.4 Introduction to VLANs 62
- 8.5 Switch Setup Screen 63
- Chapter 8 Basic Setting 64
- 8.6 IP Setup 65
- Static IP Details 66
- Dynamic IP Details (DHCP) 66
- 8.6.3 IP Configuration 67
- 8.7 Port Setup 69
- 8.8 Interface Setup 71
- 8.9 IPv6 72
- 8.9.2 IPv6 Configuration 75
- 8.9.3 IPv6 Global Setup 76
- 8.9.4 IPv6 Interface Setup 76
- 8.9.9 IPv6 Prefix Setup 82
- 8.9.10 IPv6 Neighbor Setup 83
- 8.9.11 DHCPv6 Client Setup 84
- CHAPTER 9 86
- GARP Timers 87
- 9.1.2.2 Port VLAN Trunking 88
- 9.2 VLAN Status 89
- 9.2.1 VLAN Details 90
- 9.3 Private VLAN Status 91
- 9.4 VLAN Configuration 92
- 9.7 Subnet Based VLANs 96
- 9.8 Protocol Based VLANs 98
- 9.9 Voice VLAN 100
- LABEL DESCRIPTION 101
- 9.10 MAC-based VLAN 102
- 9.12 Port-based VLAN 104
- 9.13 Technical Reference 106
- Chapter 9 VLAN 107
- 3 Click Add 107
- CHAPTER 10 108
- CHAPTER 11 110
- CHAPTER 12 113
- Chapter 12 Filtering 114
- CHAPTER 13 115
- STP Terminology 116
- How STP Works 116
- STP Port States 117
- Multiple RSTP 117
- Multiple STP 117
- 13.7 Technical Reference 131
- 13.7.2 MST Region 132
- 13.7.3 MST Instance 133
- CHAPTER 14 134
- CHAPTER 15 136
- CHAPTER 16 138
- CHAPTER 17 140
- 17.2 Link Aggregation Status 141
- 17.5 Technical Reference 146
- Chapter 17 Link Aggregation 147
- CHAPTER 18 148
- 18.1.2 MAC Authentication 149
- 18.3.1 Guest VLAN 151
- Internet 152
- CHAPTER 19 156
- 19.3 VLAN MAC Address Limit 158
- Chapter 19 Port Security 159
- CHAPTER 20 160
- Chapter 20 Time Range 161
- CHAPTER 21 162
- Chapter 21 Classifier 164
- Chapter 21 Classifier 165
- 21.4 Classifier Example 169
- CHAPTER 22 171
- CHAPTER 23 175
- 23.2 Configuring Queuing 176
- CHAPTER 24 178
- IGMP Snooping and VLANs 179
- MLD Snooping-proxy 179
- MLD Messages 180
- MVR Overview 180
- Types of MVR Ports 181
- MVR Modes 181
- How MVR Works 181
- 24.2 Multicast Setup 182
- 24.3 IPv4 Multicast Status 182
- 24.3.1 IGMP Snooping 183
- Chapter 24 Multicast 184
- 24.4 IGMP Snooping VLAN 185
- 24.5 IPv6 Multicast Status 188
- 24.5.1 MLD Snooping-proxy 189
- News: 224.1.4.10 ~ 224.1.4.50 199
- Movie: 230.1.2.50 ~230.1.2.60 199
- CHAPTER 25 201
- 25.2 AAA Screens 202
- 25.3 RADIUS Server Setup 202
- 25.5 AAA Setup 206
- 25.6 Technical Reference 208
- VLAN Assignment 210
- VLAN ID 210
- CHAPTER 26 212
- 26.2 IP Source Guard 213
- 26.4 DHCP Snooping 215
- Chapter 26 IP Source Guard 217
- 26.6 ARP Inspection Status 223
- 26.10 Technical Reference 231
- 26.10.2.3 Syslog 234
- CHAPTER 27 235
- 27.2 Loop Guard Setup 237
- CHAPTER 28 239
- CHAPTER 29 243
- 29.1.2.2 Sub-Option Format 244
- 29.1.2.3 Port State 245
- 29.2 The PPPoE Screen 246
- 29.3.1 PPPoE IA Per-Port 247
- 29.3.3 PPPoE IA for VLAN 250
- Chapter 29 PPPoE 251
- CHAPTER 30 252
- Detect screen 254
- CHAPTER 31 258
- CHAPTER 32 260
- 32.1.1 Configuration 262
- CHAPTER 33 264
- CHAPTER 34 266
- 34.2 LLDP-MED Overview 267
- 34.3 LLDP Screens 268
- 34.4 LLDP Local Status 269
- 34.5 LLDP Remote Status 274
- Management 275
- (Dot1 and Dot3 TLV) 278
- (MED TLV) 279
- 34.6 LLDP Configuration 281
- 34.7 LLDP-MED Configuration 285
- 34.9 LLDP-MED Location 287
- CHAPTER 35 291
- Chapter 35 Static Route 295
- CHAPTER 36 296
- 36.2 Activating DiffServ 297
- CHAPTER 37 300
- 37.2 DHCP Configuration 301
- 37.3 DHCPv4 Status 302
- 37.4 DHCPv4 Relay 302
- 37.4.1.2 Sub-Option Format 303
- 192.168.1.100 310
- 172.16.10.100 310
- 37.6 DHCPv6 Relay 311
- Chapter 37 DHCP 312
- CHAPTER 38 313
- 38.1.2.2 Gratuitous-ARP 314
- 38.1.2.3 ARP-Request 314
- 38.2 ARP Setup 315
- 38.2.2 Static ARP 316
- CHAPTER 39 318
- 39.2.1 Firmware Upgrade 319
- 39.2.5 Save Configuration 322
- 39.2.6 Reboot System 322
- 39.2.7 Factory Default 322
- 39.3 Tech-Support 323
- 39.4 Technical Reference 324
- 39.4.4 GUI-based FTP Clients 325
- 39.4.5 FTP Restrictions 326
- CHAPTER 40 327
- 40.3 Configuring SNMP 328
- 40.7 Technical Reference 336
- SNMP v3 and Security 337
- Supported MIBs 337
- SNMP Traps 338
- 40.7.2 Introduction to HTTPS 339
- 40.7.2.1 HTTPS Example 340
- 40.7.2.2 The Main Screen 342
- CHAPTER 41 344
- Chapter 41 Diagnostic 345
- CHAPTER 42 346
- 42.3 Syslog Server Setup 347
- CHAPTER 43 349
- 43.1.1 What You Can Do 350
- Chapter 43 Cluster Management 352
- 43.4 Technical Reference 353
- CHAPTER 44 355
- Chapter 44 MAC Table 357
- CHAPTER 45 358
- 45.2 Viewing the IP Table 359
- CHAPTER 46 360
- CHAPTER 47 362
- CHAPTER 48 363
- CHAPTER 49 364
- Chapter 49 Configure Clone 366
- CHAPTER 50 367
- Chapter 50 Neighbor Table 368
- CHAPTER 51 369
- 51.2 Switch Access and Login 370
- 51.3 Switch Configuration 372
- APPENDIX A 373
- Australia 378
- South Africa 378
- APPENDIX B 379
- Appendix B Common Services 380
- Appendix B Common Services 381
- APPENDIX C 382
- Global Address 383
- Unspecified Address 383
- Loopback Address 383
- Multicast Address 383
- Subnet Masking 384
- Interface ID 384
- Stateless Autoconfiguration 384
- Identity Association 385
- DHCP Relay Agent 385
- Prefix Delegation 386
- IPv6 Cache 386
- APPENDIX D 390
- Safety Warnings 391
- Appendix D Legal Information 392
- Appendix D Legal Information 393
- Viewing Certifications 394
- ZyXEL Limited Warranty 394
- Open Source Licenses 394
- Numerics 395
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