I'm currently studying/practicing for my CCNA exam and setup a lab of sorts to do some hands on training. To emulate a wan/telco connection between the two routers I used the following article published by Cisco to create a direct router-router connection:
http://www.cisco.com/warp/public/793/access_dial/auxback.htmlThe routers being used are two Cisco 2500 series - connected via Aux ports (using the async1 interface as defined in the above http link). Here is a generic layout (hope it saves ok!):
Domain Server Exchange Server Host A
192.168.5.2/24 192.168.5.3/24 192.168.20.2/24
| | | | | | | | | ------|Switch 1|-------- |Switch 2|
| | | |
| | | E0 - 192.168.5.1/24 E0 - 192.168.20.1/24 |
------------------------{R
outer 1| --------------------------
----------
------- |Router 2|------------------------
-
Aux - 192.168.10.2/24 Aux - 192.168.10.1/24
The switches are Cisco 3500 XL's. Domain Server is Win2K Server, Exchange Server is NT 4.0 and Host A is Win2K Pro.
If I create static routes for both routers, everything works fine. My problem is, I cannot get RIP or IGRP to work. I tried this by removing the static routes on both routers, then using the following commands on each router:
Config T
Router Rip
Network 192.168.0.0
Made sure they were set to no ip classless and that didn't work. To ensure they could both update via either RIP version (to eliminate a version issue) I then specified for the async1 interface (on both routers):
ip rip send version 1 2
ip rip receive version 1 2
and that didn't help either. Still no updates to either routing table.
Removed RIP and setup IGRP as follows:
router igrp 10
network 192.168.0.0
on both routers and that didn't work either. My suspicion is the link via the Aux ports is somehow interfering with RIP/IGRP communication but I have no clue how or what to do to correct it (if that's even possible). The article above has you set the "async dynamic routing" command which if I understand correctly should allow routing protocols over the link - but it still isn't working. I'd like to clear up this issue so I can pratice setting up routing protcols in the lab via the established link. Any help would be most appreciated!
