HP 4000M User Manual Page 46
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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Using the HP Web Browser Interface
The Web Browser Interface Screen Layout
Using the HP Web Browser
Interface
Alert Types
The following table lists the types of alerts that can be generated.
Table 3-2. Alert Strings and Descriptions
Alert String Alert Description
First Time Install Important installation information for your switch.
Too many undersized/giant packets A device connected to this port is transmitting packets shorter than 64 bytes or
longer than 1518 bytes (longer than 1522 bytes if tagged), with valid CRCs (unlike
runts, which have invalid CRCs).
Excessive jabbering A device connected to this port is incessantly transmitting packets (“jabbering”),
detected as oversized packets with CRC errors.
Excessive CRC/alignment errors A high percentage of data errors has been detected on this port. Possible causes
include:
• Faulty cabling or invalid topology.
• Duplex mismatch (full-duplex configured on one end of the link, half-duplex
configured on the other)
• A malfunctioning NIC, NIC driver, or transceiver
Excessive late collisions Late collisions (collisions detected after transmitting 64 bytes) have been
detected on this port. Possible causes include:
• An overextended LAN topology
• Duplex mismatch (full-duplex configured on one end of the link, half-duplex
configured on the other)
• A misconfigured or faulty device connected to the port
High collision or drop rate A large number of collisions or packet drops have occurred on the port. Possible
causes include:
• A extremely high level of traffic on the port
• Duplex mismatch
• A misconfigured or malfunctioning NIC or transceiver on a device connected
to this port
• A topology loop in the network
Excessive broadcasts An extremely high percentage of broadcasts was received on this port. This
degrades the performance of all devices connected to the port. Possible causes
include:
• A network topology loop—this is the usual cause
• A malfunctioning device, NIC, NIC driver, or software package
Network Loop Network loop has been detected by the switch.
Loss of Link Lost connection to one or multiple devices on the port.
- HP ProCurve Switches 1
- Documentation 5
- Contents 7
- Manage the Switch 9
- 6 Configuring the Switch 9
- 8 Troubleshooting 13
- A File Transfers 14
- B MAC Address Management 15
- Browser Interface 18
- Hubs & Switches 20
- Network Traffic 21
- Network Growth 21
- Where To Go From Here 26
- Session with the Switch 29
- Alert Log 31
- First-Time 31
- Install Alert 31
- Interface Session 32
- Using the Passwords 35
- Using the User Names 35
- If You Lose a Password 35
- Support URLs Feature 38
- Management Server URL 39
- The Overview Window 40
- Port Utilization 42
- The Alert Log 44
- Sorting the Alert Log Entries 45
- Alert Types 46
- The Alert Control Bar 48
- The Tab Bar 49
- Configuration Tab 50
- Security Tab 51
- Diagnostics Tab 51
- The Status Bar 52
- Working With Fault Detection 53
- How To End a Console Session: 57
- Main Menu Features 58
- Using the Switch Console 61
- Using Password Security 63
- Rebooting the Switch 66
- The Command Prompt 68
- Commands Available 69
- Set and Show Commands 71
- Show Commands 72
- Monitor and Manage the Switch 73
- SNMP Management Features 74
- SNMP Configuration Process 75
- Extended RMON Support 76
- Configuration Features 78
- IP Configuration 80
- To Access IP Addressing: 82
- DHCP/Bootp Operation 85
- This tag must precede the 87
- Configuring DHCP/Bootp 88
- SNMP Communities 90
- Trap Receivers 93
- Console/Serial Link 95
- Authorized IP Managers 97
- Overview of IP Mask Operation 98
- Building IP Masks 100
- Configuring the Switch 102
- Manager Addresses 102
- System Information 104
- To Access System Information: 105
- Port Settings 106
- Interface 108
- To Access Port Settings: 109
- To Access Port Monitoring: 112
- 7. Return to the Main Menu 114
- Spanning Tree Protocol (STP) 115
- To Access STP: 117
- How STP Operates 118
- STP Fast Mode 119
- Further Information 121
- Filter Types and Operation 125
- Protocol Filters 126
- Source Port Filters 126
- Non-802.1Q 129
- Overview of Using VLANs 130
- To Activate VLANs 132
- Adding or Editing VLAN Names 134
- VLAN Tagging Information 138
- IPX and IP Interfaces 142
- VLAN MAC Addresses 143
- Port Trunks 143
- Port Monitoring 143
- VLANs and Switch Meshing 143
- VLAN Restrictions 144
- Environments 145
- Load Balancing: Port Trunking 146
- Interoperability 148
- Trunk Configuration Options 149
- Operating Information 153
- Source Nodes A and D 154
- Always Appear on Port 1 154
- technol 155
- Switch Meshing Fundamentals 158
- To Access Switch Meshing 160
- Flooded Traffic 163
- Switch Mesh Domain 164
- Requirements and Restrictions 168
- IP Multicast (IGMP) Features— 171
- Multimedia Traffic Control 171
- To Access IGMP Service: 174
- How IGMP Operates 176
- Role of the Switch 177
- Features 182
- To Access ABC: 185
- How ABC Operates 189
- To Manage IP Addresses 191
- Restrictions 192
- Security 194
- Configuring Port Security 195
- Notice of Security Violations 201
- Bandwidth More Effectively 206
- Definitions 207
- Basic Operation 208
- How To Configure CoS 211
- No override is config 217
- The CoS VLAN Priority Screen 218
- E 0 219
- ToS Option: 221
- Summary of CoS Operation 222
- (IP Packets Only) 223
- Environment 227
- Tagged or Untagged for that 228
- Untagged 228
- Overview 229
- Status and Counters Screens 230
- Web Browser Interface Status 232
- Information 232
- General System Information 233
- Module Information 235
- Port Status 236
- Port Counters 238
- Address Table 242
- Port Address Table 243
- Next page or Search action 244
- IP Multicast (IGMP) Status 247
- Switch Mesh Information 250
- VLAN Information 251
- Troubleshooting 253
- Troubleshooting Approaches 254
- Unusual Network Activity 257
- IP address 258
- IGMP-Related Problems 259
- Switch Mesh Problems 259
- Topology Error 260
- STP-Related Problems 261
- VLAN-Related Problems 262
- Severity 264
- System Module 264
- Event Message 264
- Range of Events in the Log 265
- Range of Log Events Displayed 265
- Log Status Line 265
- Diagnostics 269
- The Configuration File 273
- -- More -- appears, press 274
- Using the Command Prompt 275
- Configuration 276
- File Transfers 277
- Switch-to-Switch Download 280
- To Perform the OS Download: 281
- MAC Address Management 287
- Determining the MAC Addresses 288
- Switch Port MAC Addresses 289
- Numerics 291
- 2 – Index 292
- Index – 3 293
- 4 – Index 294
- Index – 5 295
- 6 – Index 296
- Index – 7 297
- 8 – Index 298
- Index – 9 299
- 10 – Index 300
- Index – 11 301
- 12 – Index 302
- *5969-2320* 304
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