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it depends of the scenari of you network, if you are talkin in the same ASN, you can use Local-Pre , if there is a different ASN you could use MED , but remember...the only attributre that you cannot modify is the As-PATH..
i made this on one router using the AUX port to do backup link and, there is an explicit line that you have to have you mus thave a "floating router" pointing to the BACKUP INTERFAZEip route 0.0.0.0 0.0.0.0 Dialer 1 254when the primary link became i...
you con modify the next-hop information , based on policy giveexample:int eh0ip policy route-map POLICY!route-map POLICY match ip address 1set ip next-hop 192.168.1.2
