04-20-2012 09:33 PM - edited 03-07-2019 06:15 AM
Hi,
I have a cisco 878 router and I can’t assign ip address to it’s fast Ethernet interface. When I assign ip address give me this message: “you can not assign ip address to layer 2 interface”.
But I can not understand why give me this alert when I use a layer3 device?!!
Solved! Go to Solution.
04-21-2012 03:03 AM
You are using layer 3 device that has layer 2 interfaces. In this case, IP address is assgned to VLAN interface.
Note, if you have no previous experience, recommend you get support from someone that has, or study the product documentation.
04-21-2012 03:03 AM
You are using layer 3 device that has layer 2 interfaces. In this case, IP address is assgned to VLAN interface.
Note, if you have no previous experience, recommend you get support from someone that has, or study the product documentation.
04-22-2012 08:41 PM
OK
But how i can NAT my server to the wan connection & vice versa?
04-22-2012 11:36 PM
Only one port on the 878 can be assigned an IP address the other ports under the yellow portion of the router are layer 2 only ports. The 878 is a soho router so setting up a NAT and using the 1 layer 3 port as the connection to your ISP. Just use a basic NAT set up. GL
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