10-21-2013 04:23 AM - edited 03-04-2019 09:22 PM
Hello!
I have the cisco 2921 configured with 1 trunk port, on which are: LAN, WAN
So, I can't ping from router any resources with domain name, like google.com, cisco.com
but I can ping them's IP and it's success.
What can be with configuratuion, when ping to IP - success, but to domain name - fails ?
10-21-2013 08:58 AM
There are a couple of things to look at. First, can you ping your dns provider in the image? Also, have you tried changing the primary to another one of google's addresses? (8.8.4.4). Try replacing your 77.232.x.x address with 8.8.4.4 and see if that helps. Do you have any acl's on the wan interface that could be blocking udp traffic for dns or a firewall?
HTH,
John
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10-22-2013 03:14 AM
Hello !
I found, what the error was on 2921.
But know I have an other question.
I have this cisco 2921, and first-connected 2504 with 23 airports.
When I'm in Wi-Fi location, I connect to network, accept the IP, Subnet Mask, GW, DNS..but internet doesn't work.
What can this be ?
Can be this some problems with NAT or anything else.
10-22-2013 04:04 AM
More than likely it's a nat configuration. Can you post what you have?
HTH,
John
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10-22-2013 04:21 AM
Thank you for the answer. But I resolved this problem. Problem was with NAT, how I said. )
Now I must think, can I update my IOS or not. I have now version 15.2.4 M3.
What version I need to download and flash on cisco ?
Or it is not important, if it works ?
10-21-2013 09:58 AM
Hi john make sure you have enabled ip domain-lookup
Sent from Cisco Technical Support iPhone App
10-21-2013 11:57 PM
Hi,
I found the my error.. that's funny mistake.. )
I was not configured the UDP.. =)
So, I trust, that problem is resolved. I'll test soon.
Thank you for the attention ! =)
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