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| kill97 2004-02-07, 2:58 am |
| hi guys,
got a question here;
i have 3 switchs wih vlan configured and are connected to 1 switch(no vlan and and is jus a dummy switch). if a host in 1vlan do a brodcast, will all host in all other vlan receive it.
cheers,
kelvin | |
| worrywarm 2004-02-07, 11:44 am |
| VLAN is used for break up broadcast domain; as to being connected to a dump switch, only means a pc in one vlan can not communicate with a pc in another vlan. | |
| dmaftei 2004-02-07, 3:42 pm |
| quote:
Originally posted by kill97
if a host in 1vlan do a brodcast, will all host in all other vlan receive it.
Only the hosts in the same vlan will receive the broadcast, provided the vlan is indeed connected (which might not be, considering your dumb switch in the middle). | |
| kill97 2004-02-09, 8:25 am |
| hi dmaftei,
thanks for your reply,
yes the vlan is not connected because of the dumb switch.
so in this case, will the broascast goes into all vlan that is connected to the dumb switch? | |
| dmaftei 2004-02-15, 11:37 pm |
| If I remember VLANs correctly, your broadcast won't make it to the dumb switch. If you have
SW1 -- SWDUMB -- SW2
SW1 and SW2 both have VLAN101 and VLAN102, and you broadcast from a host connected to SW1/VLAN101, only hosts connected to SW1/VLAN101 will get the broadcast. But I may be wrong, you may want to double check. | |
| Yankee 2004-02-16, 7:48 am |
| dmaftei's answer with his drawing sounds good to me. Just remember SWDUM will by default be participating in VLAN1.
Yankee | |
| kill97 2004-02-16, 11:43 am |
| how can i generate a broadcast from a pc? and of course how can i capture that broadcast? | |
| dmaftei 2004-02-16, 11:57 am |
| quote:
Originally posted by kill97
how can i generate a broadcast from a pc?
ping 192.168.0.255
quote:
and of course how can i capture that broadcast?
tcpdump or ethereal |
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