- Purple, 4500 points or more
If I create a L3 SVI, and assign an access port to that VLAN, then anyone within that L3 switch should STILL be able to see those devices in that vlan because the switch is in routing mode. Correct?
Now, what happens to hosts that are on L2 switches? If I ping a host that's on a L2 switch and the same subnet as the one that I just assigned the access port to, would I be able to see it, or would I need to create the vlan on the L2 switch as well and add that device to the vlan on the L2 switch for the hosts on the L3 to see each other?
1) Broadcasts will always stay local to the vlan unless you configure your L3 interfaces to forward on the broadcasts.
The key thing to note is that the switch is a router if you enable ip routing. If you don't it is just a L2 switch, but broadcasts are still contained within the vlan.
2) Thw wording is a little misleading here. I think what your'e asking is if you have devices in vlan 2 on a L2 switch and vlan 2 has a routed interface on a L3 switch as does vlan 1 can devices in vlan 2 talk to devices in vlan 1 and the answer is yes.
If you had only L2 switches and the devices were allocated to different vlans then yes they would need to be in the same vlan to communicate.