03-15-2006 05:01 AM - edited 03-03-2019 12:04 PM
hello,
my question is the following, I have a cisco 2600 router connected to a T1 line and a 30 Mbps cablemodem line, I want the cablemodem as my primary connection and the T1 as my backup connection, when the cablemodem goes down, I want the T1 up and running.
I did this with priorities y the ip route command, BUT when I restart the router, the priorities changes, and when the cablemodem goes down and the T1 goes up I have to configure NAT manually. Im a begginner, so I need your help!!
here is my running config
03-15-2006 05:12 AM
Try the following changes:
no ip nat inside source list 1 pool cablemodem overload
ip nat inside source route-map CABLEMAP pool cablemodem overload
ip nat inside source route-map T1MAP pool t1 overload
!
route-map CABLEMAP permit 10
match ip address 1
match interface
!
route-map T1MAP permit 10
match ip address 1
match interface
!
Hope that helps - pls rate the post if it does.
Paresh
03-15-2006 08:26 AM
thank you so much.
should I leave the ip route Priorities????and if I 've to leave them, how can I do to make them static? because they change when I reboot the router.
thanks
03-15-2006 05:15 PM
I presume you mean the Administrative Distance when you say priority. I would suggest that you remove it from the primary route and leave it on the secondary route so that it becomes a floating static route.
Hope that helps - pls rate the post if it does.
Paresh
03-15-2006 06:19 PM
the problem with that is..... when I remove the administrative distance, appear automatically again with a 254 value, and if I leave it, it changes to 254 too. so, do you know how to make it static?
03-15-2006 06:26 PM
Enter in the following:
no ip route 0.0.0.0 0.0.0.0 64.84.44.1 240
ip route 0.0.0.0 0.0.0.0 64.84.44.1
copy run to start
Then, do a 'show run' to see what you get.
Hope that helps - pls rate the post if it does.
Paresh
03-16-2006 03:46 AM
I did that already, and when I remove it, appears again automatically with a 254 (maximun) value.
03-16-2006 03:47 AM
Can you do a screen capture (log) of what you are typing in, followed by a 'sh run' and then post the output ? There's something weird going on...
Paresh
03-16-2006 04:31 AM
I just do what you are saying,
no ip route 0.0.0.0 0.0.0.0 64.84.44.1 240
!
ip route 0.0.0.0 0.0.0.0 64.84.44.1
by the time, everythin is ok, But when I reboot or shutdown the interface and bring it back again the administrative distance changes to 254 again.
thats all I do.
03-16-2006 09:55 AM
mm, I think is done, I set the administrative distance of the T1 line to 255, bigger than the cablemoden automatic, so I think its done, but Im not sure, because I cant shut down the router right now, I tested the failover, it worked fine, the only problem was the administrative distance that I think is fixed now.so, tomorrow I ll test everithing.
Thank you so much
03-17-2006 03:50 AM
nop, It didnt work with a 255 administrative distance value....
any idea?
03-17-2006 04:24 PM
An admin distance of 255 makes the route unreachable. You can use any non-255 AD as long as the AD for the preferred route is less than that for the backup route.
Hope that helps - pls rate the post if it does.
Paresh
03-18-2006 08:23 AM
yes I know that, but the cablemodem line has an 254 value, and I cannot change it, when I change it, goes back to 254 automatically., so I need to make that static.
can you understand me? maybe not, because my english is so bad, because I m from Argentina.
sorry about that
03-20-2006 06:39 AM
I knew you were from Argentina/Latin America when I read your first post because you wrote "y" instead of "and". I do that sometimes when I am speaking Spanish.
Thanks for posting your problem... I actually had a question about this same problem and now it is answered.
Cuidate,
Brandon
03-20-2006 02:49 PM
Hi,
Your English is fine, mate :-)
What I am having trouble with is how you keep getting the AD of 254 on your static route. That is very odd and does not work in reality.
Also, I noticed that you posted your config earlier but it seems to have disappeared now. Could you re-post it ?
Paresh
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