Smc-networks SMC TigerStack II SMC6624M Manual de usuario Pagina 313
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11-9
Troubleshooting
Unusual Network Activity
Troubleshooting
1. If VLAN_1 (VID=1) is configured as “Untagged” on port 3 on switch “X”,
then it must also be configured as “Untagged” on port 7 on switch “Y”.
Make sure that the VLAN ID (VID) is the same on both switches.
2. Similarly, if VLAN_2 (VID=2) is configured as “Tagged on the link port on
switch “A”, then it must also be configured as “Tagged” on the link port
on switch “B”. Make sure that the VLAN ID (VID) is the same on both
switches.
Duplicate MAC Addresses Across VLANs. Duplicate MAC addresses on
different VLANs are not supported and can cause VLAN operating problems.
There are no explicit events or statistics to indicate the presence of duplicate
MAC addresses in a VLAN environment. However, one symptom that may
occur is that a duplicate MAC address can appear in the Port Address Table
of one port, and then later appear on another port. (This can also occur in a
LAN where there are redundant paths between nodes and Spanning Tree is
turned off.) For more information, refer to “VLAN Restrictions” on page 9-73.
- TigerSwitch 10/100 1
- Management Guide 3
- Trademarks: 4
- Information 8
- Trunking 9
- Contents 10
- 11 Troubleshooting 14
- Configuration File 15
- B MAC Address Management 15
- D Daylight Savings Time 16
- Selecting a Management 17
- Interface 17
- Advantages of Using the CLI 19
- Using the Menu Interface 21
- Command Line (CLI) option.) 22
- Main Menu Features 26
- Rebooting the Switch 31
- Menu Features List 33
- Where To Go From Here 34
- Accessing the CLI 35
- Using the CLI 35
- Privilege Levels at Logon 36
- Privilege Level Operation 37
- Manager Privileges 38
- Using the Command Line 39
- Interface (CLI) 39
- How To Move Between Levels 40
- ? symbol lists the 41
- Using the CLI 42
- Command Option Displays 43
- Displaying CLI “Help” 44
- Configuration Modes 46
- CLI Control and Editing 49
- Using the Web Browser 51
- General Features 52
- Session with the Switch 54
- Interface Session 56
- Using the Passwords 58
- Using the User Names 59
- If You Lose a Password 59
- Support/Mgmt URL Feature 60
- Status Reporting Features 61
- Port Utilization 62
- The Alert Log 65
- Alert Types 66
- The Status Bar 67
- Configuring IP Addressing 69
- Interface Access, and 69
- IP Configuration 70
- Just Want a Quick Start? 71
- (TTL), and Timep 72
- DHCP/Bootp Operation 78
- Web, and Inbound Telnet 83
- Interface Access 84
- ■ VT100 operation 86
- ■ 19,200 baud 86
- ■ No flow control 86
- ■ 10-minute inactivity time 86
- ■ Critical log events 86
- System Information 88
- Control and Port Trunking 93
- Parameters 100
- Port Trunking 101
- Trunk Configuration Methods 103
- Optimizing Port Usage 104
- Through Traffic Control and 104
- Trunk Group 109
- Default Port Operation 116
- LACP Notes and Restrictions 117
- technol 118
- Using Passwords, Port 121
- Security, and Authorized IP 121
- Using Password Security 122
- Security tab 126
- Security 127
- Blocking Unauthorized Traffic 128
- Planning Port Security 129
- Notice of Security Violations 140
- Resetting Alert Flags 142
- Using IP Authorized Managers 148
- Access Levels 149
- Overview of IP Mask Operation 150
- Managers 151
- Building IP Masks 154
- Applications 159
- SNMP Management Features 160
- Monitoring and Managing 161
- SNMP Communities 163
- Configuring Trap Receivers 169
- Configuring Advanced Features 171
- Stack Management 172
- Configuring Advanced 173
- Features 173
- General Stacking Operation 174
- Operating Rules for Stacking 175
- Specific Rules 176
- Configure Stacking 182
- – To change 186
- Save) to 188
- Back) to return to 190
- 4. Stack Management 190
- Monitoring Stack Status 195
- For status descriptions 196
- 9. Stacking 198
- Stacking 199
- listing 206
- MAC Address for 208
- Stack Commander 208
- Auto Join parameter 210
- SN) assigned by the Com 212
- 1 - 15) 212
- Transmission Interval 215
- Status Messages 217
- SMC6624M 220
- Overview of Using VLANs 221
- General Steps for Using VLANs 224
- Notes on Using VLANs 224
- An asterisk indicates 226
- VLANs setting 226
- Adding or Editing VLAN Names 227
- Example of a New 228
- VLAN and ID 228
- Creating the new VLAN 234
- Showing the result 234
- ■ Add VLANs 236
- ■ Rename VLANs 236
- ■ Remove VLANs 236
- ■ Configure GVRP security 236
- ■ Select a new Primary VLAN 236
- VLAN Tagging Information 237
- ■ In switch X: 238
- ■ In switch Y: 238
- IP Interfaces 241
- VLAN MAC Addresses 242
- Port Trunks 242
- Port Monitoring 242
- VLAN Restrictions 243
- General Operation 245
- GVRP Enabled 248
- (Required for Unknown 248
- VLAN operation.) 248
- Unknown VLAN Settings 248
- Default: 248
- GVRP and VLAN Access Control 250
- Planning for GVRP Operation 251
- Configuring GVRP On a Switch 251
- GVRP Operating Notes 256
- Multicast (IGMP) 258
- How IGMP Operates 264
- Role of the Switch 265
- Spanning Tree Protocol (STP) 269
- Menu: Configuring STP 270
- CLI: Configuring STP 272
- How STP Operates 275
- STP Fast Mode 276
- Monitoring and Analyzing 279
- Switch Operation 279
- Status and Counters Data 280
- General System Information 282
- Menu Access 283
- CLI Access 283
- Port Status 284
- Menu Access to STP Data 292
- CLI Access to STP Data 293
- VLAN Information 295
- Port Monitoring Features 298
- Troubleshooting 305
- Troubleshooting Approaches 306
- Unusual Network Activity 309
- IGMP-Related Problems 310
- Stacking-Related Problems 311
- Timep or Gateway Problems 311
- VLAN-Related Problems 312
- ■ All events recorded 316
- Diagnostic Tools 317
- CLI: Ping or Link Tests 319
- Configuration 323
- Transferring an Operating 327
- System or Startup 327
- Switch-to-Switch Download 328
- Menu: Xmodem Download 330
- Message Indicating 332
- MAC Address Management 337
- Determining MAC Addresses 338
- Management 341
- Using the CLI To Implement 343
- Configuration Changes 343
- Switch Memory and 345
- Maximum 348
- VLANs to support 348
- Daylight Savings Time 351
- Numerics 353
- 2 – Index 354
- Index – 3 355
- 4 – Index 356
- Index – 5 357
- 6 – Index 358
- Index – 7 359
- 8 – Index 360
- Index – 9 361
- 10 – Index 362
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