Multiple vlan's on a 2924

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Dec 14th, 2009
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Hello,


I have a cisco 2924XL Catalyst switch.

I want to make tree vlan's with different subnet's.(192.168.1.254/24:192.168.2.254/24:192.168.3.254/24)

I made the vlan database and the vlan interface and i put the vlan's on interfaces 0/1 0/2 0/3


Now here is my problem.

For some reason i can get only one vlan interface in up state a the time.

The other two are stay in shutdown state.


Please see the attached file

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Jon Marshall Mon, 12/14/2009 - 13:56
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dweijenberg wrote:


Hello,


I have a cisco 2924XL Catalyst switch.

I want to make tree vlan's with different subnet's.(192.168.1.254/24:192.168.2.254/24:192.168.3.254/24)

I made the vlan database and the vlan interface and i put the vlan's on interfaces 0/1 0/2 0/3


Now here is my problem.

For some reason i can get only one vlan interface in up state a the time.

The other two are stay in shutdown state.


Please see the attached file


The 2924 switch is a L2 switch only. What this means is that it will not route between vlans. In addition you can only have one L3 vlan interface up/up at any one time and this vlan interface is used to manage the switch not to act as a default-gateway for clients in that vlan.


To route between vlans you need either


1) to get a L3 switch ie. 3560/3750/4500/6500


OR


2) use routing on a stick where you connect your 2924 switch to a router with a trunk port and then you have subinterfaces on the router for each vlan.


Jon

Leo Laohoo Mon, 12/14/2009 - 15:38
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The 2900XL/3500XL and 2940/2950 series switches support only ONE VLAN active.

dweijenberg Tue, 12/15/2009 - 00:48
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Ok now i understand.

I just bought a 3550 i go and play with that one.


Thanks for the help.

Leo Laohoo Tue, 12/15/2009 - 01:32
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It shouldn't make any difference.  You don't need to create an VLAN interface unless you want to remotely manage a switch.  What is most important is to create a VLAN instance.

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