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Vlans trunking & nat

  • LAN
  • Routers
  • Distribution
  • Core
  • Networking
Last response: in Networking
June 17, 2011 2:59:06 AM

Hello,I have a curiosity question. If say a buisness had had static class b block of public ips and wanted to have a core router that used the public ips and provided internet connectivty to 3 distro routers connected to it on the lan side. The core router would have a firewall protecting the lan side from the wan side.
Each of the routers connected to the core router which would have nat for internet access. Behind each router would be 5 interconnected vlans which use private ips. If one or more vlans behind one of the distro routers needed to pass lan traffic over the wan to a vlan behind another distro router while matianing nat how would this be done? Is this possible at all?

More about : vlans trunking nat

June 17, 2011 10:44:16 AM

You wouldn't need to send the traffic over the WAN for Vlan to Vlan communications. Just add routes to the firewall which will get a packet destined for a vlan and it will send it to the correct distro vlan router.