Please advices me!!!
Now my system used fail over with ISPA and ISP 2, and use the router 1841 with module hwic-4fe.ISP1 is Primary and ISP2 is Backup.i have the problem: when ISP1 down ( i mean ISP has the problem but on router int F0/1 still up).So my client cannot access Internet. By the way when i take out ISP1 from Router it switch to ISP2.
Please see in the attach file.