Lab 7 : Configuring Management VLAN Interface on Cisco Router
Lab 7 : Configuring Management VLAN Interface on Cisco Router
In the switching world, a logical interface for a VLAN is called a Switched Virtual Interface. When you’re configuring a switch you will see these interfaces represented as a vlan interface. You have the ability to configure these interfaces just as you would a FastEthernet interface. A VLAN Interface can be assigned an IP address, bridge group, interface description and even a quality of service policy.
Having a VLAN Interface gives layer 2 devices the ability to communicate with other devices at layer 3. Multi-Layer switches use VLAN interfaces to enable multi-layer routing functions on a single switch. Basically the switch is its own router-on-a-stick, which is discussed in lab 4-20. In a Multi-Layer switched network, switches such as the Cisco 3550 and Cisco 3560 use VLAN interfaces as default gateways for the PC’s and other host machines on the network to communicate with other IP Networks.
For example; A Cisco 3550 has 2 VLAN’s, VLAN 10 and VLAN 20. Both have a VLAN interface assigned to each with an IP address such as 192.168.10.0/24 and 192.168.20.0/24. When a PC on VLAN 10 needs to communicate to a pc on VLAN 20 it will use the vlan interface as the default gateway and the switch will route the packet via layer3 and the switch will then switch the packet at layer2 in the new VLAN.
Layer 2 only switches can only have a single active vlan interface at any given time. This interface is called the Management VLAN interface. Layer 2 Cisco switches include Cisco 2900XL, 2950 and 2960.
In this lab you will familiarize yourself with VLAN interface configuration mode.
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