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New Member

Multiple interface or IP's?


My knowledge of networking is simply limited to what I have picked up 'along the way', so please bear with me.

I would like to know what is the best option when you need a router with multiple IP addresses (let's say 6). Should you go for a router with 6 interfaces, which you can assign an individual IP to, or a router with 1 or 2 interfaces and assign secondary IP addresses?

My real-life situation is that I have an 1801 router with 9 interfaces. Fe0 is a WAN port which can has an IP assigned to it (it's internet facing). 6 of the other 8 'switch' interfaces are assigned a VLAN each and assigned their own IP.

We have suspicions that this router can not handle the current amount of traffic on our network so I am looking to upgrade it. Should I be looking for a similar router (i.e.: with physical interfaces for each VLAN) or a router (like an 1841) with a single inside interface and just add all the IPs as secondaries?

Thanks in advance!

Best Regards,


New Member

Multiple interface or IP's?

I should add the reason I mentioned the 1841 is that we have one 'spare'. I don't even know if this would be an 'upgrade' to our existing setup. Could anyone comment on this please?