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January 4th, 2005, 10:17 PM
#1
Am I going Nuts or what?????
I have a router with a default gateway at 192.168.3.4. It contains routes to all my private subnets. One of those private subnets also has a gateway to the world via T1. I have built a server that will handle DNS and mail relay in case my primary T! here goes down. It's all rather simple really.
In order to have the secondary mail/dns server function properly I need to be able to route to it's public address from the master router that is 2 hops away. So I merrily palce the following route in the master router:-
ip route aa.bbb.ccc.0 255.255.255.0 192.168.2.10 (an internal router that several other routes point to and function perfectly well).
I write it to memory and ping the box... Bingo. So, I'm happily playing when I get a call from one of my other agencies telling me that they cannot get to a web site that they use frequently. I run an nslookup on it and find it is at aa.ee.ff.gg. The letters that are in this address match the letters in the route I put in so if aa = 10 in the route above then aa = 10 in the nslookup. As you can see the aa network is the only common factor. So I run a tracert on the aa.ee.ff.gg address and my master router tell me that the "destination host is unreachable"....
So I remove the route and everything is peachy except that I, (obviously), can't reach my aa.bbb.ccc.ddd host through the internal network which I need to do. I re-added the route same thing, I checked it for typos - none, I checked to see if there was any possibility of a conflict - none!!!!! But the host is unreachable... In fact _every_ host in the aa network is unreachable.... I have reloaded and done a hard restart and it is still messed up!!!!
Now correct me if I'm wrong but a network aa.bbb.ccc.0 and a subnet mask of 255.255.255.0 is a collection of hosts from aa.bbb.ccc.0 to aa.bbb.ccc.255 and has no relation whatsoever to the network aa.ee.ff.0.
So why the hell will my Cisco not get this right
Don\'t SYN us.... We\'ll SYN you.....
\"A nation that draws too broad a difference between its scholars and its warriors will have its thinking done by cowards, and its fighting done by fools.\" - Thucydides
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