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11
NETWORK TOOLS SCREENS
11.1 Network Tools ...............................................................................................11-1
11.2 Built-in Commands........................................................................................11-4
11.3 Example, Effects of Aging Time on Dynamic Egress..................................11-39
11.4 Example, Using Dynamic Egress to Control Traffic ....................................11-39
11.5 Special Commands.....................................................................................11-40
12
VLAN OPERATION AND NETWORK APPLICATIONS
12.1 Defining VLANs.............................................................................................12-2
12.2 Types of VLANs ............................................................................................12-3
12.2.1 802.1Q VLANs..............................................................................12-3
12.2.2 Other VLAN Strategies .................................................................12-3
12.3 Benefits and Restrictions ..............................................................................12-4
12.4 VLAN Terms..................................................................................................12-4
12.5 VLAN Operation............................................................................................ 12-7
12.5.1 Description....................................................................................12-7
12.5.2 VLAN Components .......................................................................12-7
12.6 Configuration Process...................................................................................12-7
12.6.1 Defining a VLAN ...........................................................................12-8
12.6.2 Classifying Frames to a VLAN ......................................................12-8
12.6.3 Customizing the VLAN Forwarding List ........................................12-8
12.7 VLAN Switch Operation ................................................................................12-8
12.7.1 Receiving Frames from VLAN Ports...........................................12-10
12.7.2 Forwarding Decisions .................................................................12-10
12.7.2.1 Broadcasts, Multicasts, and Unknown Unicasts..........12-10
12.7.2.2 Known Unicasts...........................................................12-11
12.8 VLAN Configuration ....................................................................................12-11
12.8.1 Managing the Switch...................................................................12-11
12.8.2 Switch Without VLANs................................................................12-12
12.8.3 Switch with VLANs......................................................................12-12
12.9 Summary of VLAN Local Management.......................................................12-15
12.9.1 Preparing for VLAN Configuration ..............................................12-15
12.10 Quick VLAN Walkthrough ...........................................................................12-16
12.11 Examples ....................................................................................................12-21
12.12 Example 1, Single Switch Operation...........................................................12-21
12.12.1 Solving the Problem....................................................................12-22
12.12.2 Frame Handling ..........................................................................12-23
12.13 Example 2, VLANs Across Multiple Switches .............................................12-24
12.13.1 Solving the Problem....................................................................12-26
12.13.2 Frame Handling ..........................................................................12-29