Hi Kwan I executed the following on the host that was having problem: [root at localhost yum.repos.d]# wget http://www.google.com --22:14:25-- http://www.google.com/ Resolving www.google.com... 74.125.19.105, 74.125.19.99, 74.125.19.106, ... Connecting to www.google.com|74.125.19.105|:80... failed: Connection timed out. Connecting to www.google.com|74.125.19.99|:80... failed: Connection timed out. Which shows that i am not getting connected to the internet. Now coming to the second point on whether i am using a proxy or not ? , I really dont know whether i am using a proxy or not. When i used a similar CentOS box on which i was successful in connecting to the internet i issues the same command as mentioned above and it got connected and downloaded the web file. How do i find whether i have proxy configured on the host that is connecting to the internet ? If you can guide me through this then i can replicate the configuration from the above host to the hosts that are not getting connected to the internet. Thanks Jatin On 4/2/2010 10:28 AM, Kwan Lowe wrote: > On Thu, Apr 1, 2010 at 11:38 PM, Jatin Davey<jashokda at cisco.com> wrote: > >> Hi >> >> I wanted to download and install the net-snmp package. Usually on my >> other CentOS boxes i use the following command to do it: >> >> yum install net-snmp >> >> I was able to successfully install net-snmp on 4 of my CentOS boxes but >> not on one of them. It reports me the following error message: >> >> [root at localhost yum.repos.d]# yum install net-snmp >> Loaded plugins: fastestmirror >> Determining fastest mirrors >> Could not retrieve mirrorlist >> http://mirrorlist.centos.org/?release=5&arch=i386&repo=os error was >> [Errno 4] IOError:<urlopen error (110, 'Connection timed out')> >> Error: Cannot find a valid baseurl for repo: base >> >> > Can you access the internet from that machine? Do you require a proxy > to connect? > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > >