Alright, so I have a 2811 router in Packet Tracer 6.1,

I equipped it with what I thought were FastEthernet ports, even though it shows up when I'm cabling them as 'FastEthernetx/x'. **(The equipment being HWIC-4ESW)**

When I try to set an IPv4 address to said port all I see is something about VLAN?

The router I have needs 6 FastEthernet ports that can have IPv4 addresses.

It is rather frustrating because they only have around 2 default FastEthernet ports for use...

The network is currently under a star-topology, so there will be no problems connecting to destination if a link goes down.

I have tried to use this method to see if it does anything but I have no idea what I am doing:

int vlan 1
ip address
no shut

I am assuming that has done something as when I checked the port status the IP was there.

I could place a switch in the fray and connect everything to a switch but that reduces reliability if the switch goes down then the whole network will not be able to connect to anything as the star topology will no longer be there.

Any suggestions?

2 Answers 2


The two onboard ports of the 2911 are routed ports so assigning them an IPv4 address is perfectly possible. The HWIC ports are layer 2 ports so you will not be able to assign them an IP address. They are not routed interfaces. What you would need to do is to assign the port (or ports) to a VLAN and then create a VLAN interface in which you will be able to assign an IP address.

  • I had solved the issue by adding some switches but now that I have grasped VLAN I could dispose of the excess switches. The other guy simply repeated what I already knew back to me so no idea why he got a thumbs up...
    – Daniel
    Apr 25, 2015 at 22:30
  • "The other guy" got upvotes because he was correcting your syntax error in the question...
    – cpt_fink
    Apr 27, 2015 at 4:20
  • ^ No need to be a sassy bitch
    – Daniel
    Oct 31, 2016 at 17:54

You've assigned the network address (where all the bits not masked are zero) which is not allowed. For your subnet, the interface address can be anything OTHER than zero (the last 8 bits are all zero) or 255 (the last 8 bits are all ones). The most common convention is to have the router be the lowest numbered address of the IP block.

Try this:

int vlan 1
ip address
no shut

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