Mutiple vlans to Internet

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Mar 31st, 2007
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what if i have different IP addresses in the network. lets say vlan 2 has IP Dslam for the dorms, vlan 4 is for the admin office and vlan 6 is for the sister company of the school that uses ipvpn how can i let all three vlan to connect to the internet?

I have 2950 with 8 vlans a trunks port 802.1q encapsulation 3600series switch as gateway to the internet.

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carenas123 Thu, 04/05/2007 - 05:36
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You just have to enable intervlan routing and create appropriate NAT statements for getting connected.


Amit Singh Thu, 04/05/2007 - 07:31
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As you already have configured inter-vlan routing on the router for all the vlans, you have enable "NAT Inside " on the sub-interfaces for inside LAN and " NAT Outside " for natting all of the subnets to the internet facing interface.


You have use ACL's to define the interesting traffic to go outside and use the "NAT inside " statement " only on the sub-interfaces that you want to acess the internet.


Please find the doc below for configuring NAT on the router.


http://www.cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080094e77.shtml


HTH,

-amit singh

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