09-05-2014 10:55 AM - edited 03-07-2019 08:39 PM
Hi I'm new to cisco and networking in general and I am having a problem with my setup. I am using Todd Lammle's book as a guide. I have an apple extreme as my home router and have connected a cisco 2800, call it Corp, to one of its ethernet ports. From there I connected another 2800, call it SF, to the first cisco 2800 through s0/1/0. Corp f0/0 is on the same network 10.0.0.0 as my apple router and can ping everything including the internet and the 172.16.0.0 network which is where SF. The problem is SF can ping Corp but nothing outside of it. Also my computer on 10.0.0.0 can't ping SF either. Here is my config:
Corp Router
interface FastEthernet0/0
description Connection to Apple Router
ip address 10.0.0.2 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/1/0
ip address 172.16.10.1 255.255.255.252
clock rate 125000
!
interface Serial0/1/1
ip address 172.16.10.5 255.255.255.252
!
router rip
version 2
network 10.0.0.0
network 172.16.0.0
default-information originate
no auto-summary
!
ip forward-protocol nd
!
ip http server
ip http authentication local
ip http secure-server
!
ip route 0.0.0.0 0.0.0.0 10.0.0.1
!
SF Router
interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/1/0
description Connection to Corp
ip address 172.16.10.2 255.255.255.252
!
interface Serial0/1/1
no ip address
shutdown
clock rate 125000
!
router rip
version 2
network 172.16.0.0
network 192.168.10.0
no auto-summary
!
This is the first time I ever ask a blog a question but I been at this for a few days and just can't find the answer. Thank you in advance.
Solved! Go to Solution.
09-13-2014 04:28 PM
Hey buddy!
Sorry for the delay! Too much work for this week.
I looked at your config and everything looks fine except for the following:
Other than that, the only change that you should do is the version and summary commands in the RIP process of SF router.
I let some files attached for review. Look at them and let me know. That thing should work now bro.
Rgrds,
Martin, IT Specialist
09-05-2014 11:58 AM
Hey @catre032882,
A few questions to help you solve the problem:
Hint: If SF can't ping the Apple Router maybe is because the AppleRouter doesn't know how to reach network 172.16.x.x.
Hope to see your answers.
Rgrds,
Martin, IT Specialist
09-05-2014 02:38 PM
Yes SF can ping 10.0.0.2 and vise versa. The default gateway was 10.0.0.1 since that is my home router. I figure there is a problem setting up my practice network behind my Apple router just hoping there is a way to do it.
09-05-2014 06:10 PM
Hi @catre032882,
I think we're very close. Since you can ping 10.0.0.2, that tells me that the problem is obviously in the Apple router. You can try the following:
Hope to see your answers.
Rgrds,
Martin, IT Specialist
09-10-2014 04:02 PM
Just a friendly update. I was able to make it work :) I set up NAT on the cisco router and changed the default dns to an actual dns server and everything on the Corp router started working. Sadly the routers below it still are not. I believe that is a issue with my routing table.
09-10-2014 07:49 PM
I'm glad to hear that!
Can you share the new config of both Cisco routers as well as the "show ip route"? (please attach them as a .txt file for simplicity)
Don't forget to rate :P
HTH.
Rgrds,
Martin, IT Specialist
09-11-2014 09:47 AM
09-13-2014 04:28 PM
Hey buddy!
Sorry for the delay! Too much work for this week.
I looked at your config and everything looks fine except for the following:
Other than that, the only change that you should do is the version and summary commands in the RIP process of SF router.
I let some files attached for review. Look at them and let me know. That thing should work now bro.
Rgrds,
Martin, IT Specialist
09-16-2014 10:11 AM
That did it! Your Awesome! Everything seems to be running smoothly now. No to my next challenge setting up a VLAN with switches. I'm trying to learn as much as I can, so hope you don't mind me remembering your name. I am sure to need help again soon. Thank you again you saved me from many headaches.
09-16-2014 11:44 AM
Ok I thought that was it but there is one more problem. Its so slow. Corp LAN is fast but SF LAN is super slow. Even when I ssh from Corp to SF typing in SF lags. The routers are connected with serial ports would this slow them down so much or is it my config?