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New Member

Router or Firewall

When an ISP issues a low grade box it is a router and a firewall. I am looking to take a box like this and put in a 3550. My question is can a 3550 do PPPOE, port forwarding, and Natting. Or would I have to put a PIX in line to do all of this?

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New Member

Re: Router or Firewall

You cannot do nat in 3550 switch, since it is a layer 2 device.NAT is usually used in conjunction with a WAN link (to the internet), and this is the most common place for NAT to be used. As the 3550 does not have WAN links it will always need a WAN device to access the internet so it's designed to be used in conjunction with an access router.

for PPPOE refer this document.

http://www.cisco.com/en/US/products/sw/iosswrel/ps5207/products_feature_guide09186a00801f0f4a.html

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