leased line backup problem

[senthil.gabriel]

Plz help me out leased line backup problem-

i configuerd ISDN for Leased line backup but after Leased line goes down Traffic is not routed thro ISDN line .when i put this -

ip nat inside source list 101 interface bri0 overload

Then traffic is routed through ISDN but after this leased line is not working so plzz tell my right configrutation for this iam sending the configrutation with the attachment

[senthil.gabriel]

hi

spremkumar

ya i already did the same but i need to check with isp

[jitesh1982]

Dear senthil

As i have suggested u earlier

taking primary route for lease line

use command

ip nat inside source list 101 interface serial0 overload

delete loopback interface

secondly in bri0 config ip address is negotiated so check what ip address u r getting . try to ping an internet ip drom ur router when isdn is active

if it works then

just prepare access list 102 permitting same internal network and overload it with bri0

problem u r facing can happen if isp failed to put seconary route pointing bri0 .u can check this through as u have put this command

ip nat inside source static 192.168.5.20 59.145.X.X extendable.

just ask any 1 of them to ping this ip 59.145.X.X from outside . when lease line is down . if it's doesnt ping that means isp had not inject secondary route for same network 59.145.a.b/29 will be i guess. ok try this and let me know