hi guys, i have router that is connected to 2 ISP's, the link to ISP1 is of 786 and that of ISP2 is 1 mb, due to some constraints we want the link to ISP1 to be primary and ISP2 to be backup, now normally it happens that there is some internal problem in ISP1 and the internet is not working while the interface status remains UP!!, so now we cant easily shift to the other link since the primary link never physically goes down !! to solve this problem i know we can use OER but its posing 2 problems
1) in OER as far as i know we cannot determine our primary link, OER will judge itself which link to use and install static routers for it so we cant define our primary link
2) if any of the participating interface goes down OER doesnt work since atleast 2 interfaces are required for it..
I planned to use object tracking with this in mind
define 2 default routes with the one with ISP with greater AD. now the object will track a particular prefix and in case if its down it will not install the primary default route and hence we will shift to the other route.
now the router is 3845 and rtr commands doesnt work anymore, a guy mentioned SLA but honestly i am not able to put it into work can some1 give me a sample configuration as to how to use it to solve my problem since this a very common issue for any organization, if there is some completely different soultion then kindly tell me
plz remember that i cannot run BGP with any of the ISP they have refused to do it
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