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Very slow start-up of telnet sessions

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  #1 (permalink)  
Old 01-04-2008, 09:04 PM
Charles Lavin
 
Posts: n/a
Default Very slow start-up of telnet sessions

Hi --

I have a 7013-series machine running AIX 3.2.5 that is suddenly giving me
problems with telnet.

Up until recently, anyone who tried to telnet to the machine would get a
login prompt right away. But for the past few weeks, when anyone opens a
telnet session, it takes the machine several minutes (sometimes 15 or more)
to deliver the login prompt. After that, everything works fine.

What could be causing this behavior? Restarting inetd and checking for
zombied telnetd sessions (there were none, BTW) hasn't helped.

Thanks,
CL


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  #2 (permalink)  
Old 01-04-2008, 09:04 PM
Jeremy
 
Posts: n/a
Default Re: Very slow start-up of telnet sessions

"Charles Lavin" <x@x.x> ha scritto nel messaggio
news:F6ABb.10270$hv2.9415@bignews6.bellsouth.net.. .
> What could be causing this behavior? Restarting inetd and checking for
> zombied telnetd sessions (there were none, BTW) hasn't helped.


Try checking name resolution. Check if your source host (the one from which
you start your telnet session) is in destination /etc/hosts file, or it is
resolved by dns or similar.

HTH,

--
Jeremy The Wicked

"There are 10 kinds of people in the world: Those who understand binary and
those who don't..."
"A computer without Microsoft is like a chocolate cake without mustard."


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  #3 (permalink)  
Old 01-04-2008, 09:04 PM
Bill
 
Posts: n/a
Default Re: Very slow start-up of telnet sessions

"Charles Lavin" <x@x.x> wrote in message news:<F6ABb.10270$hv2.9415@bignews6.bellsouth.net> ...
> Hi --
>
> I have a 7013-series machine running AIX 3.2.5 that is suddenly giving me
> problems with telnet.
>
> Up until recently, anyone who tried to telnet to the machine would get a
> login prompt right away. But for the past few weeks, when anyone opens a
> telnet session, it takes the machine several minutes (sometimes 15 or more)
> to deliver the login prompt. After that, everything works fine.
>
> What could be causing this behavior? Restarting inetd and checking for
> zombied telnetd sessions (there were none, BTW) hasn't helped.
>
> Thanks,
> CL


Perhaps it is a DNS issue ? What changed "recently" in your network
environment or on the server ? What happens on the console ?

BV
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  #4 (permalink)  
Old 01-04-2008, 09:05 PM
Charles Lavin
 
Posts: n/a
Default Re: Very slow start-up of telnet sessions

Hi --

The console is an IBM3151 terminal connected serially. It and all the other
terminals do not have this problem. However, if I try a "telnet localhost"
from the console, I have the same problem.

What happened the most recently was that this company changed Internet
carriers and we had to change IP addresses on all computers. However, the
telnet problem didn't start happening until some time after that.

Thanks,
CL

"Bill" <bverzal@komatsuna.com> wrote in message
news:51157c68.0312100622.466430c4@posting.google.c om...
> "Charles Lavin" <x@x.x> wrote in message

news:<F6ABb.10270$hv2.9415@bignews6.bellsouth.net> ...
> > Hi --
> >
> > I have a 7013-series machine running AIX 3.2.5 that is suddenly giving

me
> > problems with telnet.
> >
> > Up until recently, anyone who tried to telnet to the machine would get a
> > login prompt right away. But for the past few weeks, when anyone opens a
> > telnet session, it takes the machine several minutes (sometimes 15 or

more)
> > to deliver the login prompt. After that, everything works fine.
> >
> > What could be causing this behavior? Restarting inetd and checking for
> > zombied telnetd sessions (there were none, BTW) hasn't helped.
> >
> > Thanks,
> > CL

>
> Perhaps it is a DNS issue ? What changed "recently" in your network
> environment or on the server ? What happens on the console ?
>
> BV



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  #5 (permalink)  
Old 01-04-2008, 09:05 PM
Hawk
 
Posts: n/a
Default Re: Very slow start-up of telnet sessions

my bet would be a DNS problem, or incorrect entries in /etc/hosts. It could
be a problem in your tcp/ip config as well, maybe wrong gateway or
something.

l8r,
Jeff

"Charles Lavin" <x@x.x> wrote in message
news:XNZBb.17152$Yt2.8211@bignews3.bellsouth.net.. .
> Hi --
>
> The console is an IBM3151 terminal connected serially. It and all the

other
> terminals do not have this problem. However, if I try a "telnet localhost"
> from the console, I have the same problem.
>
> What happened the most recently was that this company changed Internet
> carriers and we had to change IP addresses on all computers. However, the
> telnet problem didn't start happening until some time after that.
>
> Thanks,
> CL
>
> "Bill" <bverzal@komatsuna.com> wrote in message
> news:51157c68.0312100622.466430c4@posting.google.c om...
> > "Charles Lavin" <x@x.x> wrote in message

> news:<F6ABb.10270$hv2.9415@bignews6.bellsouth.net> ...
> > > Hi --
> > >
> > > I have a 7013-series machine running AIX 3.2.5 that is suddenly giving

> me
> > > problems with telnet.
> > >
> > > Up until recently, anyone who tried to telnet to the machine would get

a
> > > login prompt right away. But for the past few weeks, when anyone opens

a
> > > telnet session, it takes the machine several minutes (sometimes 15 or

> more)
> > > to deliver the login prompt. After that, everything works fine.
> > >
> > > What could be causing this behavior? Restarting inetd and checking for
> > > zombied telnetd sessions (there were none, BTW) hasn't helped.
> > >
> > > Thanks,
> > > CL

> >
> > Perhaps it is a DNS issue ? What changed "recently" in your network
> > environment or on the server ? What happens on the console ?
> >
> > BV

>
>



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  #6 (permalink)  
Old 01-04-2008, 09:12 PM
VinceM
 
Posts: n/a
Default Re: Very slow start-up of telnet sessions

We had a problem like this. See Apar link below.

http://www-1.ibm.com/support/docview...id=isg1IY08816

"Charles Lavin" <x@x.x> wrote in message
news:XNZBb.17152$Yt2.8211@bignews3.bellsouth.net.. .
> Hi --
>
> The console is an IBM3151 terminal connected serially. It and all the

other
> terminals do not have this problem. However, if I try a "telnet localhost"
> from the console, I have the same problem.
>
> What happened the most recently was that this company changed Internet
> carriers and we had to change IP addresses on all computers. However, the
> telnet problem didn't start happening until some time after that.
>
> Thanks,
> CL
>
> "Bill" <bverzal@komatsuna.com> wrote in message
> news:51157c68.0312100622.466430c4@posting.google.c om...
> > "Charles Lavin" <x@x.x> wrote in message

> news:<F6ABb.10270$hv2.9415@bignews6.bellsouth.net> ...
> > > Hi --
> > >
> > > I have a 7013-series machine running AIX 3.2.5 that is suddenly giving

> me
> > > problems with telnet.
> > >
> > > Up until recently, anyone who tried to telnet to the machine would get

a
> > > login prompt right away. But for the past few weeks, when anyone opens

a
> > > telnet session, it takes the machine several minutes (sometimes 15 or

> more)
> > > to deliver the login prompt. After that, everything works fine.
> > >
> > > What could be causing this behavior? Restarting inetd and checking for
> > > zombied telnetd sessions (there were none, BTW) hasn't helped.
> > >
> > > Thanks,
> > > CL

> >
> > Perhaps it is a DNS issue ? What changed "recently" in your network
> > environment or on the server ? What happens on the console ?
> >
> > BV

>
>



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