topic Re: Some telnet connection halts in Operating System - OpenVMS

Some telnet connection halts

Antoniov. — Thu, 10 Feb 2005 10:21:03 GMT

I'm with my customer who had very slow trouble http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=799684

Now all emulators and VT work fine but two PC have some weird trouble: suddenly connection halts and after a few seconds restarts.
Both PC have windows xp (but also other PC in network have same OS). All PCs use PowerTerm emulator of pathwork32.

Any idea?

Antonio Vigliotti

Re: Some telnet connection halts

Ian Miller. — Thu, 10 Feb 2005 10:57:45 GMT

are the troubled pc on the same network switch port as the the others?

Time to get the lan analyzer out?

Re: Some telnet connection halts

Antoniov. — Thu, 10 Feb 2005 11:35:02 GMT

Ian,
yes, theese PCs are on same hub-swith of server alpha. But also other PC are on same hub-switch (24 ports) and work fine!

Today is wrong day for my network :-(

Antonio Vigliotti

Re: Some telnet connection halts

Garry Fruth — Thu, 10 Feb 2005 11:43:29 GMT

If you don't happen to have a LAN analyzer with you. Try using TCPTRACE on the VMS side. I don't recall the exact syntax.

Send the output to a file and and analyze it after the failure. Use /PORT=23 to limit the trace to telnet. Use /NUMBER=99999 and hit control-y after the restart. Type a string into the telnet session such as "XYZZYXYZZYXYZZY" so that you can identify connection during analysis.

Re: Some telnet connection halts

Bojan Nemec — Fri, 11 Feb 2005 02:17:16 GMT

Antonio,

Does this two PC have also problems when comunicate with other PCs? PCs have the same speed/mode problem with network cards. So you must check this. Maybe is time to get a managed switch, which has the ability to set the speed and mode for each port.

Bojan.

Re: Some telnet connection halts

Antoniov. — Fri, 11 Feb 2005 07:35:59 GMT

Move both PCs on hub 10Mbs and trouble seems solved :-|
I can't understand why. No change made neither on PCs or Alpha.

Antonio Vigliotti

Re: Some telnet connection halts

Antoniov. — Fri, 11 Feb 2005 07:40:02 GMT

Bojan,
the PCs had no trouble with other PCs. Now they work at 10Mbs obviously.
Theese PCs worked fine when access to internet moving files each other.

I'm perplexed :-?
Today I have to came back to my office and I believe I stop every change.

Antonio Vigliotti