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Cisco HWIC-4ESW and HWIC-D-9ESW EtherSwitch Interface Cards
How to Configure EtherSwitch HWICs
43
DETAILED STEPS
Configuring the Maximum Aging Time for a VLAN
Follow the steps below to configure the maximum age interval for the spanning tree.
SUMMARY STEPS
1. enable
2. configure terminal
3. spanning-tree vlan vlan-ID max-age max-age
Command or Action Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
• Enter your password if prompted.
Step 2
configure terminal
Example:
Router# configure terminal
Enters global configuration mode.
Step 3
spanning-tree vlan vlan-ID forward-time
forward-time
Example:
Router(config)# spanning-tree vlan 20
forward-time 5
Configures the forward time of a VLAN.
• The value of forward-time can be from 4 to 30 seconds.
• Use the no form of this command to restore the
defaults.
- Cisco IOS LAN Switching 1
- Configuration 1
- Documentation 3
- Documentation Conventions 4
- Cisco IOS Documentation Set 6
- Command References 7
- Documentation Organization 10
- • Technical documentation 13
- • Technical assistance 13
- Last updated: August 6, 2008 15
- Using the CLI 16
- Router(diag)# 18
- Understanding Command Syntax 20
- • enable password 22
- • enable secret password 22
- Abbreviating Commands 23
- Using the debug Command 24
- Additional Information 26
- Virtual LANs 29
- Virtual LANS Features Roadmap 31
- • Configuring IEEE 33
- Cisco IOS Releases 12.2SR 34
- LAN Segmentation 37
- Security 37
- The Tagging Scheme 39
- Native VLAN 40
- Figure 77 Native VLAN 41
- • A PVST region 41
- • A PVST+ region 41
- • A MST region 41
- VLAN Colors 42
- Implementing VLANS 43
- Communication Between VLANs 43
- IEEE 802.10 Protocol 44
- IEEE 802.1Q Protocol 44
- ATM LANE Protocol 44
- VLAN Interoperability 45
- Designing Switched VLANs 46
- Configuring a VLAN Range 46
- Supported Platforms 47
- Benefits 47
- Frame Tagging in ISL 49
- Host 1 Configuration 89
- Host 2 Configuration 89
- Router A Configuration 89
- Router B Configuration 90
- VLAN Switch Configuration 90
- VLAN 20 Configuration 92
- VLAN 30 Configuration 92
- VLAN 70 Configuration 93
- VLAN IEEE 802.1Q IRB: Example 100
- Additional References 104
- Technical Assistance 105
- Managed LAN Switch 107
- LAN Switching 108
- Enabling Managed LAN Switch 108
- Verifying Managed LAN Switch 109
- Command Reference 111
- Command Reference 112
- EtherSwitch Interface Cards 113
- Contents 114
- Modules in a Single Chassis 115
- Storm Control 117
- Intrachassis Stacking 117
- Fallback Bridging 117
- Configuring VLANs 118
- SUMMARY STEPS 120
- DETAILED STEPS 121
- Verifying VLAN Deletion 121
- Configuring a VTP Server 122
- Configuring a VTP Client 124
- Verifying VTP 125
- Defining a Range Macro 126
- Changing the Quiet Period 141
- Enabling Multiple Hosts 145
- Configuring Spanning Tree 147
- Enabling Spanning Tree 148
- Example: 150
- Calculating Port Cost 151
- Configuring Hello Time 154
- Configuring the Root Bridge 156
- Example 160
- Enabling CDP on an Interface 163
- Configuring the SPAN Sources 166
- Configuring SPAN Destinations 166
- Examples 171
- Configuring IGMP Snooping 173
- Configuring Stacking 183
- Configuring Fallback Bridging 185
- Creating a Bridge Group 186
- Changing the Switch Priority 191
- Assigning a Path Cost 194
- Adjusting BPDU Intervals 195
- Voice Traffic and VVID 201
- Managing the EtherSwitch HWIC 203
- Configuring IP Information 204
- Specifying the Domain Name 207
- Specifying a Name Server 207
- Enabling the DNS 207
- Disabling SPAN 208
- Managing the ARP Table 209
- Configuring the Aging Time 210
- Removing Dynamic Addresses 211
- Adding Secure Addresses 212
- Configuring Static Addresses 214
- Verifying Static Addresses 216
- Range of Interface: Examples 217
- Stacking: Example 218
- VLAN Configuration: Example 218
- Spanning Tree: Examples 219
- Hello Time: Example 221
- IGMP Snooping: Example 222
- Storm-Control: Example 224
- Ethernet Switching: Examples 224
- Inter-VLAN Routing: Example 225
- Standards 227
- HWIC-D-9ESW EtherSwitch Cards 228
- Multilayer Switching 231
- Multilayer Switching Overview 233
- Terminology 234
- Introduction to MLS 234
- Key MLS Features 234
- MLS Implementation 235
- Figure 63 MLS Implementation 236
- Figure 64 MLS Implementation 236
- Figure 65 MLS Implementation 237
- Figure 66 MLS Implementation 237
- General Guidelines 238
- IP Multicast MLS Components 240
- Layer 3 Multicast MLS Cache 241
- IP Multicast MLS Flow Mask 241
- Introduction to IPX MLS 243
- IPX MLS Flows 244
- MLS Cache 244
- Flow Mask Modes 244
- Introduction to IPX MLS 245
- IPX MLS Operation 246
- Standard Access Lists 247
- Features That Affect MLS 248
- Reflexive Access Lists 249
- Maximum Transmission Unit 250
- Americas Headquarters: 251
- Configuring MLS on a Router 252
- Monitoring MLS 252
- Prerequisites 259
- Restrictions 260
- External Router Guidelines 261
- Enabling IP Multicast Routing 262
- Enabling IP PIM 262
- Enabling IP Multicast MLS 262
- Network Topology Example 264
- Router Configuration 265
- Switch Configuration 266
- Switch B Configuration 269
- Switch C Configuration 269
- Console> (enable) 270
- Router(config)# mls rp ipx 274
- Troubleshooting Tips 275
- Switch A Configuration 278
- MLS-RP Configuration 280
- Restrictions for cGVRP 283
- Information About cGVRP 284
- EtherChannel 285
- How to Configure cGVRP 286
- Enabling a Dynamic VLAN 288
- Configuring cGVRP: Example 290
- Verifying cGVRP: Example 295
- Topology 296
- Feature Information for cGVRP 300
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