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Telnet or rsh takes too much time

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Old Unix and Linux 02-08-2013
filosophizer filosophizer is offline
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[Solved] Telnet or rsh takes too much time

telnet or rsh or ftp to an AIX machine takes too much time, like have to wait 3 minutes before the prompt appears.

What can I look to troubleshoot this problem


thanks

Last edited by radoulov; 02-08-2013 at 04:44 PM.. Reason: Marked as solved.
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Old Unix and Linux 02-08-2013
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Check for DNS resolving issues and check if there is a performance problem on the box you come from or where you go as destination. Maybe also check if there is a network problem with something like traceroute .
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filosophizer filosophizer is offline
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traceroute

Code:
C:\>tracert 10.1.1.100

Tracing route to 10.1.1.100 over a maximum of 30 hops

  1    13 ms    <1 ms    <1 ms  10.1.1.101

Trace complete.

how can I check for network problem or performance issue on the box where i want to telnet to ?

thanks

Last edited by filosophizer; 02-08-2013 at 03:00 PM..
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hicksd8 hicksd8 is offline Forum Advisor  
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As Zaxxon says, the first thing to check is the DNS service. The delay could be all caused by a very slow resolution process.

What happens if instead of


Code:
telnet <nodename>

you enter


Code:
 
telnet <ip address>

Do you still see the delay?

Otherwise, can you introduce a third system into this and see if you can tell which node is causing the problem?

Also, just noticed you are using 10.1.1.* ip addresses. Are you sure that your network knows that these ip's are local and not out in the big wide world?
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Old Unix and Linux 02-08-2013
filosophizer filosophizer is offline
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Code:
telnet <nodename>



 
telnet <ip address>

Both give delay of more than 3 minutes for the login , but another machine on the same network works fine IP and nodename.

How can I isolate the problem to DNS or server-performance-issue ?

DNS is windows DNS Server..



POST-SCRIPT: ISSUE SOLVED

Deleted the file /etc/resolv.conf
the file had an entry

and removed name-server and stopped nameserver from smitty tcpip

Issue resolved.

as Zaxxon said, the first issue to look for should be DNS.
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