22-11-2012, 04:36 PM
Inter-VLAN Routing
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Configuring Inter-VLAN Routing
The exercises in this section cover how to configure inter-VLAN routing and review the commands to
configure a switch to support inter-VLAN routing.
Inter-VLAN Routing Configuration Exercise
Figure 6-3 shows two topologies. One topology is using traditional inter-VLAN routing and the other
topology is using router-on-a-stick inter-VLAN routing. The addressing for both topologies is shown
in Table 6-2. For this exercise, you will not configure a separate management or native VLAN.
Prepare the Network
Cable a network that is similar to the one shown in Figure 6-4.
You can use any current switch in your lab as long as it has the required interfaces shown
in Figure 6-4 and supports 802.1Q encapsulation. The router you choose must support
inter-VLAN routing. The output shown in this lab is based on Cisco 2960 switches and an
1841 router. Other switch or router models may produce different output.
Set up console connections to all three switches.
Step 2. Clear any existing configurations on the switches.
Clear NVRAM, delete the vlan.dat file, and reload the switches. Refer to “Lab 2-1: Basic
Switch Configuration (2.5.1)” if necessary for the procedure. After the reload is complete,
use the show vlan command to confirm that only default VLANs exist and that all ports
are assigned to VLAN 1.
Document the Switch Configurations
On the router and each switch, capture the running configuration to a text file and save it for future
reference. These scripts can be edited to expedite configuring switches in future labs.
Task
Clean Up
Unless directed otherwise by your instructor, erase the configurations and reload the router and switches.
Disconnect and store the cabling. For PC hosts that are normally connected to other networks (such as
the school LAN or to the Internet), reconnect the appropriate cabling and restore the TCP/IP settings.
Packet Tracer Companion: Basic Inter-VLAN Routing (6.4.1)
You can now open the file LSG03-Lab641.pka on the CD-ROM that accompanies this book to repeat
this hands-on lab using Packet Tracer. Remember, however, that Packet Tracer is not a substitute for a
hands-on lab experience with real equipment.