Cisco 2924C - Catalyst Switch Spezifikationen Seite 273
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Catalyst 2900 Series XL and Catalyst 3500 Series XL Software Configuration Guide
78-6511-05
Chapter 8 Configuring VLANs
How VLAN Trunks Work
Beginning in privileged EXEC mode, follow these steps to modify the allowed list
of a ISL or 802.1Q trunk:
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
interface interface_id Enter interface configuration mode and the port to be
added to the VLAN.
Step 3
switchport mode trunk Configure VLAN membership mode for trunks.
Step 4
switchport trunk allowed vlan
remove vlan-list
Define the VLANs that are not allowed to transmit and
receive on the port.
The vlan-list parameter is a range of VLAN IDs Separate
nonconsecutive VLAN IDs with a comma and no spaces;
use a hyphen to designate a range of IDs. Valid IDs are
from 2 to 1001.
Step 5
end Return to privileged EXEC.
Step 6
show interface interface-id
switchport allowed-vlan
Verify your entries.
Step 7
copy running-config
startup-config
Save the configuration.
- Catalyst 2900 Series XL and 1
- Catalyst 3500 Series XL 1
- Software Configuration Guide 1
- CONTENTS 3
- 1 Overview 1-1 4
- 5 Clustering Switches 5-1 6
- 6 Configuring the System 6-1 7
- Contents 10
- 78-6511-05 10
- 8 Configuring VLANs 8-1 11
- 9 Troubleshooting 9-1 13
- A System Error Messages A-1 14
- Audience 15
- Organization 17
- Conventions 18
- Related Publications 19
- Obtaining Documentation 20
- Ordering Documentation 21
- Documentation Feedback 21
- Cisco.com 22
- Technical Assistance Center 22
- Contacting TAC by Telephone 23
- Chapter 1 Overview 26
- Features 26
- Management Options 31
- Large Campus Configuration 42
- Hotel Network Configuration 44
- Multidwelling Configuration 47
- Getting Started with CMS 49
- Cluster Manager and VSM 51
- 10.1.126.45 52
- Cluster Tree 54
- Switch Images 55
- Redundant Power System LED 56
- Port Modes and LEDs 57
- 10/100 Ports 61
- 1000BASE-X Ports 61
- Menu Bars 62
- Cluster (VSM-specific) 63
- Move the cursor over 65
- Help Contents 65
- Port Pop-Up Menu 66
- Device Pop-Up Menu 67
- Monitoring 68
- Cluster is collapsed to a 70
- Connected cluster 70
- Status bar shows that 70
- Cluster View is displayed 70
- Switch202 71
- Topology 72
- Menu Bar 74
- CMS Window Components 79
- Host Name List 80
- Online Help 81
- Accessing CMS 83
- Saving Configuration Changes 85
- Management Software 86
- Where to Go Next 86
- Getting Started with the CLI 87
- Command Usage Basics 88
- • Change 89
- • Perform basic 89
- • Display 89
- Abbreviating Commands 90
- Redisplaying a Command 91
- Getting Help 91
- Note No space before tabbing 92
- Command-Line Error Messages 93
- Accessing the CLI 94
- General Switch Administration 97
- Switch Software Releases 98
- Console Port Access 99
- Telnet Access to the CLI 100
- HTTP Access to CMS 101
- Default Settings 105
- Device Management 106
- Flooding Control 109
- Network Redundancy 109
- Diagnostics 110
- Security 110
- Clustering Switches 113
- Understanding Switch Clusters 114
- Planning a Switch Cluster 116
- Standby Command Switches 117
- IP Addresses 120
- Passwords 120
- Host Names 122
- SNMP Community Strings 122
- Management VLAN 123
- Network Port 124
- NAT Commands 124
- Creating a Switch Cluster 125
- Verifying a Switch Cluster 131
- Displaying Link Information 132
- Command switch 135
- Trap 1, Trap 2, Trap 3 135
- Member 1 Member 2 Member 3 135
- SNMP Manager 135
- Configuring the System 137
- Changing IP Information 138
- DHCP Client Request Process 141
- Configuring the DHCP Server 142
- Configuring the TFTP Server 143
- Configuring the Relay Device 145
- Obtaining Configuration Files 146
- Example Configuration 148
- Changing the Password 151
- Configuring SNMP 154
- Entering Community Strings 155
- Adding Trap Managers 155
- Configuring CDP 158
- Configuring STP 160
- Disabling STP 161
- Enabling STP UplinkFast 166
- How CSUF Works 167
- Limitations 171
- Connecting the Stack Ports 171
- Changing the Switch Priority 175
- STP Port States 177
- Changing the Path Cost 179
- Changing the Port Priority 179
- Configuring STP Root Guard 180
- Managing the ARP Table 181
- Removing Multicast Groups 184
- Configuring MVR 185
- Setting MVR Parameters 189
- MAC Addresses and VLANs 192
- Adding Secure Addresses 194
- Removing Secure Addresses 195
- Adding Static Addresses 195
- Removing Static Addresses 196
- Configuring TACACS+ 197
- Network Services 201
- Starting TACACS+ Accounting 202
- Configuring the Switch Ports 205
- Configuring Flooding Controls 208
- Disabling Storm Control 209
- Enabling a Network Port 211
- Disabling a Network Port 212
- Configuring Protected Ports 217
- Enabling Port Security 218
- Disabling Port Security 219
- Enabling SPAN 220
- Disabling SPAN 220
- Configuring Voice Ports 221
- Different VLANs 224
- Configuring the LRE Ports 226
- Table 7-1 LRE Profiles 228
- LRE Ethernet Links 229
- Configuring VLANs 233
- Overview 234
- Management VLANs 236
- VLAN Membership Combinations 240
- Using VTP 244
- The VTP Domain 245
- Table 8-4 VTP Modes 246
- VTP Advertisements 247
- VTP Version 2 248
- VTP Pruning 249
- VTP Configuration Guidelines 250
- VTP Version 251
- Configuring VTP 252
- Configuring VTP Server Mode 253
- Configuring VTP Client Mode 254
- Enabling VTP Version 2 256
- Disabling VTP Version 2 257
- Enabling VTP Pruning 257
- Monitoring VTP 258
- VLANs in the VTP Database 259
- VLAN Configuration Guidelines 260
- Default VLAN Configuration 260
- Adding a VLAN 265
- Modifying a VLAN 266
- How VLAN Trunks Work 268
- Configuring a Trunk Port 270
- Disabling a Trunk Port 272
- How Class of Service Works 276
- Port Scheduling 277
- Load Sharing Using STP 278
- How the VMPS Works 284
- Dynamic Port VLAN Membership 285
- VMPS Configuration Guidelines 288
- Default VMPS Configuration 289
- Reconfirming VLAN Memberships 291
- Changing the Retry Count 292
- Troubleshooting 295
- Table 9-2 LRE Port Problems 298
- Troubleshooting CMS Sessions 299
- Chapter9 Troubleshooting 300
- Configuration Problems 303
- Recovery Procedures 307
- Step 7 Load any helper files: 317
- System Error Messages 321
- Table A-1 Facility Codes 322
- Chassis Message 325
- CMP Messages 325
- Environment Messages 326
- GigaStack Messages 327
- Link Message 328
- LRE Link Messages 328
- Module Message 329
- Port Security Messages 329
- RTD Messages 330
- Storm Control Messages 331
- Numerics 333
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