Need IOS that supports VLANs for a 2801 router

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Aug 28th, 2007
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Can some one tell me why I can't configure an Interface Vlan on my 2801 router. I believe I have the latest ios version "c2801-spservicesk9-mz.124-16.bin". Please let me know what I am doing wrong?

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islam.irshaid Tue, 08/28/2007 - 06:53
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i think you mean SVI ,if you don't have layer 2 WIC you cann't use interface vlan - because the router is layer 3 not 2

shirwaziri1_2 Tue, 08/28/2007 - 06:58
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the only ports that I see are:




I don't see any WIC cards. The bays are not used at all.

ankbhasi Tue, 08/28/2007 - 07:00
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  • Cisco Employee,

Hi Friend,

You will not be able to configure interface vlan on routers as it is not a layer 3 switch. For vlan routing you have to configure subinterfaces on router and configure subinterfaces with encapsulation dot1q commans to understand vlan tagging.

So configure subinterfaces

interface fa0/0.1

ip address

encapsulation dot1q



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