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How do I setup a single "trunk" port on a 3com Officeconnect 3CDSG8?

PaulELS asked
Last Modified: 2012-05-09
I'm attempting to set up a trunk port between a 3com Officeconnect 3CDSG8 and my upstream provider that passes traffic across two VLANs. Unfortunately, the 3com only allows web configuration and when attempting to setup a trunk within the interface, it requires two ports or more ports to set up a trunk.

I want to use just one physical port to pass traffic between our router and the upstream provider. How do I go about setting this up?
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