ISR 4431/k9 is working not true !

[Manh Tien Bui]

Dear all,

I have one ISR 4431/k9 (isr4400-universalk9.03.16.03.S.155-3.S3-ext.SPA.bin). I have two line for WAN. On router, I configured:

- Route MAP for two WAN

- Zone base firewall with ACL

This is My Topology. 

- I have ~ 15 Class-map for each server backend.

I have a problem: 

- I run about near two month => my router port is not working fine ( Client cannot ping to it but router can ping to clients and I cannot ping from router to end point line WAN of ISP ). When I completed reboot my Router, It did work fine !.

I don't know to troubleshoot it. Help me !.

Thanks everybody.

[Philip D'Ath]

If it has had a reboot then there wont be any info left to look at, and if it is working fine - what is their left to trouble shoot?

[Manh Tien Bui]

I had syslog messages before error time. I attached with csv format. I hope that firends can help me find error.

Thanks.