On GNS3: Connected port but not showing up

boxerboy1168

So I am using GNS3 while studying OSPF and I am just beginning the OSPF course modules. I have 2 c3600 routers connected via FA ports.

I have done no configurations.

#sh ip int br is not listing any ports as connected
#sh int status
#sh int fa2/0

None of those commands are giving me information on which port has a line connected to it. Can anyone help out?

Legacy User

Are the ports admin down? Are you looking at the correct ports?

boxerboy1168

yes they are down/down

Chris.Mackenzie01

If you run:
sh ip int bri

Do you see it?Are you sure they are fast ethernet ports? and not just ethernet (10mbs).

From my GNS3 days before i moved to EVE, I think I was always used ethernet.

willieb

Need more info, but the ports are probably shut down. Assign some IPs and do a no shut on each interface. If you are still having trouble give us a "show run" of both routers and give us the output of your other commands.

I threw a couple 3745s in a GNS3 project and connected fa0/0 to fa0/0. With no configuration the ports are shutdown:


*****************************************************
R1#sh run int fa0/0
Building configuration...


Current configuration : 83 bytes
!
interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
end


R1#

*****************************************************



Take note that in GNS3 when you no shut the interface will come up regardless if it's connected to anything or not. It's an unfortunate result of using sims and something to be aware of.

When I no shut both ports they are showing up/up:


*****************************************************
R1#sh int fa0/0
FastEthernet0/0 is up, line protocol is up

<*** Output Omitted ***>
*****************************************************

Assign a couple IPs then they can ping each other:

So here are the interface configs for each interface to get IP connectivity:


*****************************************************
For R1:
interface FastEthernet0/0
ip address 10.0.0.1 255.255.255.0
duplex auto
speed auto
end

For R2:
interface FastEthernet0/0
ip address 10.0.0.2 255.255.255.0
duplex auto
speed auto
end



R1#ping 10.0.0.2

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.0.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 64/71/80 ms
R1#


*****************************************************

Maybe this will help...

boxerboy1168

ok, so apparently GNS3 has some sort of issue with the down/down even though an ethernet port is connected

I solved the issue by enabling visible ports and hovering the mouse over each line until the ports it was connected to showed up

appreciate the help guys thanks!!