Few are the issues that I am facing on IOS Version 15 and Cisco 1941 Router , this router is currently in production on clients.
•1. I do PAT on router interface , and it has public IP on it , when I send request to Internet via Browser from LAN client , Page does not open and when I check NAT TRANSLATION on router , Router does translate the packets. The work around I found is that when I disabled CEF on router , Web starts browsing , Why does this happen and why I need to disable CEF ?
•2. I have Public IP Pool its subnet mask is /29 , one of the Public IP from this pool is live on the interface. When I perform STATIC NAT a web server resides in LAN , then I can access this server from anywhere in the world by IP.
After few days Static NAT stopped working , I again Static NAT it on other Public IP , the same issue rise again , I am not able to access this server from Internet. This issue has been faced at two clients. The same pool i have checked on 1841 router and static nat works fine on the same public IP .
I have upgraded the IOS as well to version 15.1 but STATIC NAT issue is not solved.
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