07-15-2008 02:45 PM - edited 03-06-2019 12:12 AM
I can't seem to get past the Eth0 of the router when I am on the switch, however, when I am consoled on the router, I can ping everyone and their mother. I don't get it.
I'm hoping this mini graph will help. I also have the FA0/2 set as a trunk b/c I will be operating VLANs on a couple of switches which will lead off of ports 3 & 4.
Anyone who can help -- thank you. I can't seem to figure out what's wrong...and I've been trying to get this small problem resovled for the past 36 hours...went as far as hooking up a Linksys WRT54G
Equipment:
=====================
1720 series router.
Catalyst 3560G-24TS
Router:
================
Eth0: 10.0.100.113 /24
FA0: 10.20.1.1 /30
|
|
|
Switch
================
ip routing
!
!
interface GigabitEthernet0/2
description To Router
switchport trunk encapsulation dot1q
switchport mode trunk
interface Vlan1
ip address 10.20.1.2 255.255.255.252
!
ip classless
ip route 0.0.0.0 0.0.0.0 10.20.1.1
ip route 10.0.100.0 255.255.255.0 10.0.100.113
07-15-2008 03:07 PM
On your switch you should either remove the trunk commands or the IP address. The port cannot be both layer 2 & 3. Since the connection from FA0 on the router is a layer 3 port I would remove the trunk commands and place the trunk somewhere else down the line. Unless I am missing something give those a try.
Mark
07-15-2008 03:12 PM
Mark, thanks for your quick response... Unfortunatly, I have to say, welcome to my world. It didn't work. :(
I have on my router and very basic config...just the needed to connect. On the switch, it's the same way.
07-15-2008 04:02 PM
Sorry that didn't work but, it was the first thing that I noticed. If you can post configs your problem could be better diagnosed.
07-18-2008 08:04 AM
Hey Mark -- upon working on it I finally got it to work. What didn't make sense to me was, out of frustration, I hooked up a Linksys Wireless Router and went Eth0 to the WAN connection on the Linksys, set a 30 bit network between the two and from my switch, I could get out. Based on that, I checked my cables to see if I was using a straight through when I should have been using a X-over etc...basic, minor troubleshooting.
Still not being able to get what I needed without using the Linksys, I wiped the IOS on the Router and went down to 12.2.XX and tried each, thinking that I might have loaded an IOS that required memory which I somehow overlooked and that I didn't meet (and yet my router could get to either location).
Finally 2 days ago - on Wed, I decided to take a look at the current network topology and decided to play with just one port setting which was a direct connect to our Dist. Switch in our Data center...and it dawned on me -- We have VLANS and the configs I was using - yeah, didn't match. So all along it was a vlan setting pre set causing it. I opened that puppy up and BAM - just like that, I was back in business.
Thanks for your help...I didn't even catch the initial config problem between the layer 2/3 I initially had.
Cheers!
07-18-2008 08:54 AM
Not a problem. Thanks for letting me know that your problem has been resolved.
Mark
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide