Mutiple vlans to Internet

sbacalanmo · ‎03-31-2007

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.

Thanks

carenas123 · ‎04-05-2007

You just have to enable intervlan routing and create appropriate NAT statements for getting connected.

Amit Singh · ‎04-05-2007

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