Packet Tracer

Just downloaded Packet Tracer.

I'm trying to configure an IP address on the routers interface but it won't let me.

Router#sh ip int brief Interface IP-Address OK? Method Status Protocol
GigabitEthernet0 172.1.1.1 YES unset administratively down down
FastEthernet0 unassigned YES unset up down
FastEthernet1 unassigned YES unset up down
FastEthernet2 unassigned YES unset up down
FastEthernet3 unassigned YES unset up down
Serial0 unassigned YES unset administratively down down
Ethernet1 192.168.3.1 YES unset up up
VirtualPortGroup0 192.168.1.1 YES unset up up
Cellular0 unassigned YES IPCP administratively down down
Vlan1 unassigned YES unset administratively down down
Router#config
Configuring from terminal, memory, or network [terminal]?
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#int fastethernet 0
Router(config-if)#ip address 192.168.12.0 255.255.255.0
^
% Invalid input detected at '^' marker.

Most of the interfaces are set to a VLAN 1 by default and cant be changed, only the ones without the VLAN 1 next to them can be configured.

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Comments

Node Man

Look at the ip address and then compare to the subnet mask.

PPP123

What's the problem with it?

PCTechLinc

PPP123 wrote: »

Router(config)#int fastethernet 0
Router(config-if)#ip address 192.168.12.0 255.255.255.0
^
% Invalid input detected at '^' marker.

Most of the interfaces are set to a VLAN 1 by default and cant be changed, only the ones without the VLAN 1 next to them can be configured.

If you're asking about this specific error, it looks like you're trying to assign a Network ID to an interface (192.168.12.0).

PPP123

Sorry that was a typo, my bad.

It won't let me put any address in

PPP123

Any interface that has VLAN 1 next to it, I can't configure.

I have tried disabling the VLAN but it won't let me because it is set to default.

Vlan1.jpg

rob42

Which Router are you using?

PPP123

Its an 819IOX

rob42

You can't assign an IP Address to the fa ports because they are 'Switch' ports (I believe that's the reason). Use a 'Generic' or a 2811 or a 2620.

PPP123

Thanks for your answer.

I was trying to configure an OSPF lab, so I needed both fast and giga ethernet for cost differences.

I never knew you could create more modules on a router.

That has fixed my problem, thanks a bunch

rob42

No problem. You're welcome. All the best.

Node Man

If a port is configured for layer-2 (a switchport), it cant get an iP. only layer-3 ports can get IP's. depending on device, the command "no switchport" will set the port to layer-3. this might not work on all models of cisco.

(sorry for the overkill, i see the answer has been reached

)

PPP123

Works on a 1240.

Every days a school day.

Thanks

No problem lol the more I learn the better. All input is appreciated

rob42

Node Man wrote: »

... the command "no switchport" will set the port to layer-3....

Good one: I'd forgotten about that...

rob42

@PPP123

B.T.W, have you seen this Wendell's CCNA Skills Blog | OSPFv2 Enabler #1 – Answers[/URL?

PPP123

That will come in handy when I'm doing my ICND2.

I will bookmark it.

Thanks