Re: Slow rlogin after upgrade to 5.2.
From: Hemant Shah (shah_at_typhoon.xnet.com)
Date: 08/21/03
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Date: Thu, 21 Aug 2003 18:44:31 +0000 (UTC)
While stranded on information super highway F. Michael Orr wrote:
:)"Richard D. Latham" <lathamr@us.ibm.com> wrote in message
:)news:n0e3ennj.fsf@us.ibm.com...
:)> Hemant Shah <shah@typhoon.xnet.com> writes:
:)>
:)> > While stranded on information super highway Jason Mather wrote:
:)> > :)Hemant Shah wrote:
:)> > :)> Folks,
:)> > :)>
:)> > :)> Recently we upgraded our H70 from AIX 4.3.3 to AIX 5.2. After the
:)updrade
:)> > :)> rlogin, remsh, rcp commands take almost 15 seconds to make the
:)> > :)> connection. Once the connection is made everything works O.K.
:)> > :)> In AIX 4.3.3 it was instantaneous.
:)> > :)>
:)> > :)> Did anything change between AIX 4.3.3 and AIX 5.2?
:)> > :)>
:)> > :)>
:)> > :)> Thanks.
:)> > :)>
:)> > :)>
:)> > :)>
:)> > :)
:)> > :)Sounds like a name resolution problem.
:)> > :)If you include the domain name is it fast?
:)> >
:)> > No, it is still slow. I changed the /etc/netsvc.conf file and specified
:)> > "local4,bind4" instead of "local,bind" so that it does not do IPV6
:)resolution.
:)> >
:)> > I also changed inetd.conf file and start rlogind with -c option, but it
:)is
:)> > still slow. It seems that only the 'r' commands (rlogin, etc) are slow.
:)> > telnet, ftp and other applications have no problem.
:)> >
:)> > This is only a problem for an outbound rlogin, etc comamnds from a
:)> > AIX 5.2.0.0 (according to oslevel) system. We have other systems at AIX
:)> > 4.3.3, AIX 5.1.0.0, Linux, Sun Solaris 8, and HP-UX 11, they do not
:)have
:)> > any problem. rlogin from other system to the AIX 5.2.0.0 system is
:)> > instantaneous also.
:)>
:)> <snip>
:)>
:)> It's likely that the reverse address resolution on the _target_
:)> machine is amuck.
:)>
:)> Have you checked the DNS server list (probably in /etc/resolv.conf) on
:)> the remote command target host ?
:)>
:)> As far as that goes, an nslookup "over there" of your AIX box's DNS
:)> name might be instructive.
:)>
:)> --
:)> #include <disclaimer.std> /* I don't speak for IBM ... */
:)> /* Heck, I don't even speak for myself */
:)> /* Don't believe me ? Ask my wife :-) */
:)> Richard D. Latham lathamr@us.ibm.com
:)
:)We had a similar problem when I upgraded to 5.2L, and I bet you from your
:)posts its on the hosts defined locally. The file that now defines
:)resolution order is /etc/irs.conf. If, for example, you only do local hosts
:)and DNS (no NIS), set the irs.conf as follows:
We do not have /etc/irs.conf file. Should I create it?
What does it do, is there any documentation on it?
Thanks.
:)
:)hosts local continue
:)hosts dns
:)
:)That will do local /etc/hosts lookups first, then DNS. This may resolve
:)your problem.
:)
:)
--
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