Jon Marshall Thu, 01/22/2009 - 12:53
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A vlan is a layer broadcast domain. So two devices in the same vlan can see each other without needing the presence of a router.


If you have 2 vlans and a device in each vlan then you need to route between the 2 vlans and for this you either need a router or a L3 switch.


Jon

lamav Thu, 01/22/2009 - 13:16
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Just to add a bit to Jon's post, you can have more than one subnet in a vlan.


Take vlan 10.


interface vlan 10

ip address 10.10.0.0 255.255.254.0


The subnets for vlan 10 are:


10.10.0.0/24

10.10.1.0/24


A device with address 10.10.0.5 can reach 10.10.1.5 without the need of a router because they are in the same Layer 2 broadcast domain - in other words, in the same vlan.


HTH



engbandar Thu, 01/22/2009 - 15:35
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A device with address 10.10.0.5 can reach 10.10.1.5


+if i want stop device see etch other what can do to stop this+

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