Hp TopTools for Hubs and Switches Manuel d'utilisateur Page 168
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Managing Switches
Configuring Switch Features
■ Override “illegal” packet priorities set by upstream devices or applications
that use 802.1Q VLAN tagging with 802.1p priority tags.
■ Avoid or delay the need to add higher-cost NICs (network interface cards)
to implement prioritizing. Instead, control priority through network policy
administered by HP TopTools for Hubs & Switches.
Definitions
The following terms are used frequently with policy configuration.
■ Differentiated services bits: The upper 6 bits of the Type of Service (ToS)
field (the DS field) of an IP packet
■ Downstream device: A device linked directly or indirectly to an outbound
switch port. The switch sends traffic to downstream devices.
■ Inbound port: Any port on a switch through which traffic enters the switch
■ Outbound port: Any port on a switch through which traffic leaves the
switch
■ Outbound port queue: For any port, a buffer that holds outbound traffic
until it can leave the switch through that port. There is a “high priority”
queue and a “normal priority” queue for each port in the HP Procurve
switches supporting this feature. Traffic in a port’s high priority queue
leaves the switch before any traffic in the port’s normal priority queue.
■ Precedence bits: The upper three bits in the Type of Service (ToS) field of
an IP packet
■ Upstream device: A device linked directly or indirectly to an inbound
switch port. The switch receives traffic from upstream devices.
■ 802.1p priority: A traffic priority setting carried only in packets in 802.1Q
tagged VLANs. This setting can be from 0 to 7.
■ 802.1Q tagged VLAN: A virtual LAN (VLAN) that complies with the 802.1Q
standard and is configured as “tagged”. (For more on VLANS, see the
Management and Configuration Guide you received with your HP
Procurve switch.)
Basic Operation
Configuring a CoS policy in the switch affects switch internal traffic priorities
at the outbound port and, if 802.1Q VLANs are configured in your network,
the priority settings in traffic leaving the switch. This enables control over
traffic movement within the switch as well as control over the priority settings
in packets going to downstream devices and applications that can use those
settings.
Policy Option for Controlling Traffic Priorities at the Outbound Port.
Each port in the switch has two outbound traffic queues; “normal” priority
and “high” priority. (High-priority packets leave the switch port first. Normal-
priority packets leave the switch port after the port’s high-priority queue is
emptied.) With no CoS control, all traffic (with two exceptions) goes through
- HP TopTools for 1
- Hubs & Switches 1
- User Guide 1
- Contents 5
- 3 System Requirements 6
- 4 Discovering Your Devices 6
- 5 Alerts 6
- 6 Networking Devices 6
- 7 Configuration Policies 7
- 8 Viewing Your Maps 7
- 9 Monitoring Network Traffic 8
- 11 Quality of Service 9
- 12 Accessing Hub Features 9
- 13 Managing Switches 10
- 15 Performing Diagnostics 11
- 16 Downloading Software 11
- A Appendix A 12
- Quick Start 13
- Getting Around in HP TopTools 14
- Viewing Your Network Devices 15
- Examining Alerts 17
- Viewing Network Traffic 20
- Optimizing Your Network 21
- How to Get Support 22
- Introduction 23
- Network Devices Features 26
- Network Traffic 27
- Network Growth 27
- HP Devices Supported 27
- Learning to Use HP TopTools 30
- System Requirements 33
- System Requirements 34
- Discovering Your Devices 35
- Discovery Status 36
- Selecting Networks 36
- Adding Devices for Discovery 37
- Beginning Discovery 38
- Troubleshooting Discovery 39
- Inventory of Devices 40
- Fault Finding 41
- Table 5-1. Common Faults 43
- Launching the Device View 45
- Acknowledging Alerts 45
- Closing Alerts 45
- Filtering Alerts 46
- Filtering by Alert State 47
- Filtering by Alert Severity 47
- Filtering by Device 47
- Show List 48
- Configuring Action on Alerts 49
- Deleting Closed Alerts 51
- Networking Devices 53
- Configuring Polling 54
- Selecting Actions for Devices 56
- Device Topology 57
- Node Port Table 59
- Custom Groups 59
- Searching for Devices 60
- Group Policies 63
- Creating Groups 64
- Adding a Group 65
- Modifying a Group 65
- Adding a Device to a Group 66
- Changing the Group Name 67
- Configuring Group Policies 68
- SNMP System Information 69
- Alert Configuration Policies 70
- Setting Fault Sensitivity 71
- Advanced Switch Features 72
- Routing Information Protocol 74
- Automatic IP RIP Control 74
- Automatic IPX RIP/SAP Control 75
- The Spanning Tree Protocol 76
- Communities 76
- Adding a Community 77
- Modifying a Community 78
- Deleting a Community 78
- Viewing Your Maps 79
- Map Server Settings 80
- Automatic Map Generation 81
- Default View 81
- Cluster Size 82
- Launching a Map 83
- Using the Panner 84
- Options for Displaying Maps 85
- Locating a Node 86
- Monitor 87
- Monitoring Network Traffic 89
- Using Traffic Monitor 90
- Reading the Segment Histogram 91
- Setting Thresholds 92
- Displaying the Network Meter 94
- Who Are the Top 5 Talkers? 95
- Top5 View Menu Items 98
- Automatic Monitoring 100
- Manual Monitoring 100
- Removing Selected Devices 101
- Remove All Devices 101
- Traffic Data Storage 102
- Monitoring Network Traffic 103
- Connection to Server Lost 105
- Planning for Network Growth 107
- Using Network Tools 108
- Advisor 109
- Creating a New Report 110
- Modifying Your Settings 111
- Viewing a Report 113
- Add or Upgrade Equipment 118
- Top Conversations 121
- Inventory of End Nodes 123
- Controlling Data Storage— 124
- Administration 124
- Collects Data 125
- Capability 128
- Quality of Service 129
- Overview 130
- Basic Operation 131
- Policies 132
- Addresses) 132
- Service (ToS) 134
- How To Configure a ToS Policy 136
- Protocols 137
- Accessing Hub Features 141
- Interpreting Device Status 143
- Global Counters 145
- Table 12-2. Global Counters 146
- Configuring Your Device 147
- Fault Detection 148
- System Information 149
- Configuring IP 149
- Hub IP Configuration 150
- Port Configuration 151
- Bridge Enable/Disable 152
- Backup Links 152
- Support URL 154
- Figure 12-12.The Support Page 155
- Managing Switches 157
- Graph Area 158
- Port Counters 159
- Port Status 159
- Switch Identity Information 161
- Configuring Switch Features 162
- IP Configuration 164
- Class of Service 166
- Definitions 168
- Assigning a Monitoring Port 172
- Setting Device Features 173
- HP Procurve Stack Management 174
- Additional header for the 175
- Commander of a stack 175
- Stacking button 175
- VLAN Configuration 176
- Enabling VLANs 177
- Adding a VLAN 177
- Renaming a VLAN 177
- Removing a VLAN 177
- Enabling GVRP Security 178
- Support/Management URLs 179
- Management Server URL 180
- Device Passwords 181
- Hub Port Security 186
- Address Selection 187
- Authorized Address 188
- Eavesdrop Prevention 188
- Send Alarm 188
- Disable Port 189
- The Hub Intrusion Log 190
- Switch Port Security 191
- Parameter Description 192
- Overview of IP Mask Operation 195
- Configuring Port Security 196
- Switch Intrusion Log 198
- Proxy Web Servers 201
- Security Violations 201
- Intrusion Log 201
- Performing Diagnostics 203
- Rebooting a Device 204
- Settings 205
- Resetting a Switch 206
- Downloading Software 209
- The Software Update Utility 211
- TopTools Server 215
- The HP Download Manager 216
- How to Update the Map Files 219
- Appendix A 221
- Preparing Network Devices 222
- Configuring IP Parameters 223
- Network Bootp Server 225
- Numerics 227
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