CAN IDs play almost the same role as MAC addresses in Ethernet. If these segments join back into one network - you will have collisions and both devices become. Is it possible to use the same vlan id on multiple networks without there being any mixing of traffic? Thanks in advance for any feedback. Trunk just pass teh multiple vlans data. Hope this helps. A Virtual Local Area Network, or VLAN, is a logical construct that can be configured within a switch that can be used to create distinct broadcast domains, which are partitioned and isolated in a computer network at the Data Link Layer, or Layer 2 of the OSI model. So I unplugged the DAC cable, changed the chassis-id on the new switch, and reconnected it. At the exact same time, on my Cisco L3 switch uplink, I started. We need to configure the same VLAN numbers in each VRF, ie both will have separate instances of VLANs 10, 11 & 12.
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