CCNP Switch: Multilayer Switching InterVLAN Routing Recall that a Layer 2 network is defined as a broadcast domain. A Layer 2 network also can exist as a VLAN inside one or more switches. VLANs essentially are isolated from each other so that packets in one VLAN cannot cross into another VLAN. To transport packets between VLANs, you must use a Layer 3 device. … [Read more...]