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eggster34

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IP addresses may not be configured on L2 links on Cisco 1801

Hello

I have a Cisco 1801 K9 router with the security enabled IOS.
It has 1 fastethernet0 interface, 1 ATM interface for DSL connection, and 8 fastethernet ports numbered from 1 to 8. Can I give ip addresses to these ports and use at least two of them for routing?
 i.e. network 10.1.0.0 on fastethernet0
      network 10.2.0.0 on fastethernet1
      network 10.3.0.0 on fastethernet2

currently when I attempt to give ip addresses to these switch ports, I get:

% IP addresses may not be configured on L2 links.

Thanks!
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Don Johnston
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The eight ports you're referring to are part of an integrated switch. These eight ports are layer-2 switched ports that are "connected" to the fastethernet port. As they are layer-2 switched ports, no IP address can be assigned to them.

So if you assign the FastEthernet0 port an IP address of 192.168.1.1/24, then anything connected to the switched ports will have to have an IP address on the 192.168.1.0/24 network.

This is a similar situation except that they are hubbed ports instead of switched.

https://www.experts-exchange.com/questions/21969034/2507-ROUTER-USING-THE-ETHERNET-PORTS.html
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Frabble
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eggster34

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Frabble, that seemed to do the trick. Thank you so much.