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Full Discussion: Linux DNS issue
Operating Systems Linux Red Hat Linux DNS issue Post 302501865 by autoconfig on Saturday 5th of March 2011 08:29:19 AM
Old 03-05-2011
Linux DNS issue

Hi , I have configured OEL 5.3 server on VMware server,installation went fine, however when i am checking host using configured /etc/hosts i am getting following error let me know where it went wrong .

I had disabled firewall options and SELLinux.
Code:
root@oen11g ~]# host oen11g.grid.com 
;; connection timed out; no servers could be reached

here is /etc/hosts
Code:
[root@oen11g ~]# cat /etc/hosts 
# Do not remove the following line, or various programs 
# that require network functionality will fail. 
127.0.0.1 localhost.localdomain localhost 
10.103.10.125 ; oen11g.grid.com oen11g

I am able to ping
Code:
[root@oen11g ~]# ping 10.103.10.125 
PING 10.103.10.125 (10.103.10.125) 56(84) bytes of data. 
64 bytes from 10.103.10.125: icmp_seq=1 ttl=64 time=1.53 ms 
64 bytes from 10.103.10.125: icmp_seq=2 ttl=64 time=0.339 ms 

--- 10.103.10.125 ping statistics --- 
2 packets transmitted, 2 received, 0% packet loss, time 1001ms 
rtt min/avg/max/mdev = 0.339/0.936/1.533/0.597 ms 

[root@oen11g ~]# ping oen11g.grid.com 
PING oen11g.grid.com (10.103.10.125) 56(84) bytes of data. 
64 bytes from oen11g.grid.com (10.103.10.125): icmp_seq=1 ttl=64 time=0.036 ms 
64 bytes from oen11g.grid.com (10.103.10.125): icmp_seq=2 ttl=64 time=0.242 ms 
64 bytes from oen11g.grid.com (10.103.10.125): icmp_seq=3 ttl=64 time=0.234 ms 

--- oen11g.grid.com ping statistics --- 
3 packets transmitted, 3 received, 0% packet loss, time 2001ms 
rtt min/avg/max/mdev = 0.036/0.170/0.242/0.096 ms 

[[root@oen11g ~]# traceroute 10.103.10.125 
traceroute to 10.103.10.125 (10.103.10.125), 30 hops max, 40 byte packets 
1 oen11g.grid.com (10.103.10.125) 0.572 ms 0.026 ms 0.021 ms 

[root@oen11g ~]# dig +trace 10.103.10.125 

; <<>> DiG 9.3.6-P1-RedHat-9.3.6-4.P1.el5_4.2 <<>> +trace 10.103.10.125 
;; global options: printcmd 
;; connection timed out; no servers could be reached 
[root@oen11g ~]#


Last edited by Scott; 03-05-2011 at 09:45 AM.. Reason: Please use code tags.
 

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prtdscp(1M)						  System Administration Commands					       prtdscp(1M)

NAME
prtdscp - display DSCP IP addresses SYNOPSIS
prtdscp [-v ] prtdscp [-v ] -h prtdscp [-v ] -d prtdscp [-v ] -s DESCRIPTION
prtdscp displays the IP addresses associated with a Domain to Service Processor Communications Protocol (DSCP) link. If no arguments are specified, prtdscp displays the IP addresses on both ends of the DSCP link. The IP address of either the Service Processor or domain side can be displayed separately by the use of the -s or -d options, respectively. OPTIONS
The following options are supported: -v Verbose mode. Print additional details about the program's internal progress to stderr. -h Help. Print a brief synopsis of the program's usage and exit. All other command line arguments are ignored. -d Display only the local domain's IP address. -s Display only the remote Service Processor's IP address. EXAMPLES
Example 1 Displaying both addresses The following example displays both the local domain's IP address and the remote SP's IP address: # prtdscp Domain Address: 192.168.103.2 SP Address: 192.168.103.1 Example 2 Displaying the local IP address The following example displays the local domain's IP address: # prtdscp -d 192.168.103.2 Example 3 Displaying the remote IP address The following example display the remote SP's IP address: # prtdscp -s 192.168.103.1 ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWdscpr.u, SUNWdscpu.u | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ SEE ALSO
attributes(5) SunOS 5.11 25 Apr 2006 prtdscp(1M)
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