Broadcast and Vlan

[susim]

Hi 

Broadcasts and IP networks are not limited to VLANs. Then why we would say vlans  are separate broadcast domains 

Thanks 

[susim]

Thanks milan 

For your great explanation . 

As per the diagram attached , 

PC-A sends frame . When it leaves the port which is connected , it tags vlan 5 .

The switch already learned the mac-address of the PC-B on port fa0/8 ( fa0/8 (vlan 5) connected second switch fa0/8(vlan 6)

since it identified the destination port is fa0/8 , it removes the vlan information and send to port fa0/8 

is it correct 

or  

PC-A sends frame . When it leaves the port which is connected it does not tag any vlan information to the frame 

The switch already learned the mac-address of the PC-B on port fa0/8 

since it identified the destination port is fa0/8 ,it sends the frame to fa0/8 

Thanks 

[milan.kulik]

Hi,

in your case (all ports configured as access ones) no VLAN tags are sent on the wires.

PC-A sends an untagged frame to the switch.

The switch knows the destinatiom MAC address is visible on port fa0/8.

It only checks if this port belongs to the same VLAN 5.

It does, so it forwards the frame (untagged) out of the port fa 0/8.

The second switch receives this untagged frame on his port (fa0/8?) which belongs to VLAN 6.

He knows the destination MAC address, so again it only checks if the destination port belongs to the same VLAN 6. And forwards the frame to the PC-B.

As I said already, connecting switches this way creates one common VLAN5-6.

Best regards,

Milan