I have looked at the config that you posted and it looks reasonable. I do not see major issues with it. The output of show ip interface brief is helpful because it show that interface Gig0/0 is down. With this interface down you certainly will not be accessing the Internet. Note that the Embedded Service Engine is in administrative shutdown state and that interface Gig0/0 is not shutdown but is down down. This is usually more an indication of some physical connection issue.
You tell us that you connected the ISP line to your laptop. Was your laptop configured for static IP or configured to use DHCP to learn an address?
I connected the cable from ISP to my latop and configured IP statically. Connection is working fine and awesome. But when ever I connect cable to any interface of Router, Interface will go down in shutdown mode. I assigned Public IPs on both Interfaces and I checked. Interface goes into shutdown mode. However, link is working fine with my laptop when I connect directly.
Funny story what I did was I changed duplex setting. Actually it was a VSAT connection with ISP.
I applied these commands problem solved.
I am glad that you have solved the problem. Thank you for posting back and telling us that is is solved and how you solved it.
That is very interesting that the problem turned out to be problems with speed and duplex. I am surprised that it worked on on your laptop but not on your router. But the important thing is that now it is working.
Perhaps you can mark this question as answered so that others will realize that a solution has been found?
Nvi is nat virtual interface and is an ios way of nating addresses rather than using the legacy ip nat inside command you would use ip nat enable. Look it up.
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Could you please tell me is that NAT Inside and outside command is giving me headaches. Shall I go ahead and have to configure IP nat enable on both interfaces. If NVI0 port doesn't assign IP automatically the another Gigabit Ethernet port will also go down in shutdown state. However I don't have problem with Private address. I only have problem with Public IP.
Could you try configuring the MAC address of your laptop under the 1921 WAN interface?
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Sure, I will do that thank you. Could you please share some knowledge what happens with MAC address if I configure on