Slow Telnet

[LinuAIX]

Hi All,

I have one that is driving me nuts. When I telnet to the system in question with the simple host name "server" it can take up to a minute to connect. When I telent with the FQDN "server.domain.com" it goes right through. /etc/hosts has the FQDN and simple hostname. NSLOOKUP resolves to the FQDN from the simple host name or ipaddress. Ping works without flaw using the simple hostname. Any Ideas?!?!

Thanks

 

[Chapter11]

Can the remote system resolve your incoming IP?

 

[LinuAIX]

Yes. Each system has the same dns ip address and domain in /etc/resolv.conf.

i.e.

nameserver 1.1.1.1
domain domain.com

 

[Chapter11]

telnet into the system in question, and wait to get in.

when you get to a prompt, do a "who" and note if you are getting numeric or name for the origin (rightmost column).

If you are getting numerics, do an "nslookup -q=ptr ${IP}" for it.

If that doesn't resolve immediately, the machine is not properly resolving DNS.

 

[theycallmetim]

Try setting up a netsvc.conf file. Sounds like your dns server is slow in responding. When you do a netstat -a does it also return slow?

Format of netsvc.conf

hosts=local,nis,bind




This means it will try to resolv the address in the hosts file before trying dns

 

[TJmike]

hi!

put a -c on the last line of the telnet at /etc/inetd.conf then run refresh -s inetd upon completion.

ex.
#vi /etc/inetd.conf
.....
.....
telnet stream.........telnetd -a -c (-a is default)
......
#refresh -s inetd

TJmike

 

[LinuAIX]

Thanks for the sugesstions. The problem I have is that I have many systems that work as configured i.e. telnetd -a and a netsvc.conf. But they do not have the hostnames of every system in /etc/hosts which they resolve without a .domain.com.

Am I correct that the -c is the un-documented switch for canonical names?

Larry

 

[LinuAIX]

Chanper11,

The I did a who and get the FQDN not numerics?!?!

Larry