Based on my understanding, VLAN is similar to multicast. But one happens at L2, the other happens at L3: VLAN restricts Broadcast to a part of LAN, multicast restricts Broadcast to a part of network. VLAN table is kept by bridge; multicast is kept by multicast router.
It is correct?
My question is how do I decide which VLAN should the packet be broadcast to?
It is said that there is an Ethernet frame tag header for VLAN ID. Does it use
"Destinatio n Address" of Ethernet frame?
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Based on my understanding, VLAN is similar to multicast. But one happens at L2, the other happens at L3: VLAN restricts Broadcast to a part of LAN, multicast restricts Broadcast to a part of network. VLAN table is kept by bridge; multicast is kept by multicast router.
It is correct?
My question is how do I decide which VLAN should the packet be broadcast to?
It is said that there is an Ethernet frame tag header for VLAN ID. Does it use
"Destinatio n Address" of Ethernet frame?
Hello, Sophie000!
I have not worked with VLANs but would like to add something because a router is included. Routers will find a closest neighbour, one line that has no problem to send packets away. So if you had the option of hardcoding an IP, so you connect to the VLAN of your choice if VLANs work in this manner, if network is failing, there would not be a closest neighbour to send to. This is just a thought, perhaps it is helpful somehow;-)
Based on my understanding, VLAN is similar to multicast. But one happens at L2, the other happens at L3: VLAN restricts Broadcast to a part of LAN, multicast restricts Broadcast to a part of network. VLAN table is kept by bridge; multicast is kept by multicast router.
It is correct?
My question is how do I decide which VLAN should the packet be broadcast to?
It is said that there is an Ethernet frame tag header for VLAN ID. Does it use
"Destinatio n Address" of Ethernet frame?
Based on my understanding, when ever frame comes, first we check the VLANID (as frames belongs to a VLAN should not be forwarded to other VLAN as per standard). and then only it will search the bridge table for destination mac address to forward frame.
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