Re: Switching query

Hey,

Well we have to go to the basics somehow and recall the two types of
interfaces:
1)Routed Interface: A port which takes an IP address and serves as a
connected subnet. Routing protocols are to be run on Routed Interfaces.
2)Switchport: A switchport is a port which is configured to be part of a
VLAN. There is no IP addressing on this port. Just like any user on a switch
is connected is in a certain VLAN, the port will not have an IP address, the
user connected to that port will. Since this is a switchport and not a
routed port (no routing protocol will run here).
3)SVI: Switched Virtual Interfaces are routed interfaces corresponding to a
certain VLAN that usually are the gateways for users.

Thus in your scenario you can:
1)Make the ethernet interfaces as Routed interfaces (no switchport) and then
put an IP address on them and run a routing protocols on the connected
routers.

2) Use SVI's on the switch and run a routing protocol on them.

HTH
On Sun, Sep 19, 2010 at 3:34 PM, CCIE KID <eliteccie_at_gmail.com> wrote:

> Hey i am using 4 vlans in a switch namely vlan 10 ,vlan 20 ,vlan 30,vlan 40
> and vlan 50
> I am assigning vlan 10 to switch port fa 0/1
> vlan 20 to fa 0/2
> vlan 30 to fa 0/3
> vlan 40 to fa 0/4
> vlan 50 to fa 0/5
>
> when i am configuring anything for a particular vlan can we use interface
> vlan command or else inteface fa command
>
> For example i want to configure ospf authentication for vlan 20 means we
> have to go on interface vlan 20 or else int fa 0/2
>
> int fa 0/2
> ip ospf authentication message-digest
> ip ospf mesaage-digest-key 1 md5 cisco
>
> or else
>
> int vlan 20
> ip ospf authentication message-digest
> ip ospf mesaage-digest-key 1 md5 cisco
>
>
>
> Confusion between interface vlan and int fa commands
>
> pls clear my head???
>
>
> --
> With Warmest Regards,
>
> CCIE KID
> IN PURSUIT OF CCIE
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
>
>
>
>
>
>
>
>

-- 
KJ
Blogs and organic groups at http://www.ccie.net