[THIN] Re: Disconnects

  • From: Mario Villarreal <MarioV@xxxxxxxxx>
  • To: "'thin@xxxxxxxxxxxxx'" <thin@xxxxxxxxxxxxx>
  • Date: Wed, 16 Jul 2003 20:59:50 -0700

Has anybody had the disconnect problem with users in the SAME BUILDING  as
the Citrix Servers?  We are seeing that more often now after two years of
relatively problem free connections.
 
-----Original Message-----
From: Greg Reese [mailto:GReese@xxxxxxxxxxxxxxxx]
Sent: Wednesday, July 16, 2003 5:58 PM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Disconnects
 
my users can barely dial AOL and connect to an Nfuse page.  I'll never get
them to VPN.  
-----Original Message-----
From: Marty [mailto:Marty@xxxxxxxxxxxx]
Sent: Wednesday, July 16, 2003 9:20 PM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Disconnects
You may want to look into a VPN and then tunnel your ICA through it. I did
it and it worked wonders. For my host I purchased a firewall with VPN. For
the clients, the small ones I just load VPN client software. For the larger
(networked) remote offices, I purchased a smaller firewall and had that
create the VPN tunnel to the host. This has cut my disconnect problems by
90%.
 
Good Luck
----- Original Message ----- 

From: Wesley Suderman <mailto:wsuderman@xxxxxxxxxxxxxxxxxxx>  
To: 'thin@xxxxxxxxxxxxx' <mailto:'thin@xxxxxxxxxxxxx'>  
Sent: Wednesday, July 16, 2003 5:14 PM
Subject: [THIN] Re: Disconnects
 
Greg, 
We are having a very similar issue here in phoenix... 
Our remote locations through out he southwest are dropping connections about
every 10- 30 min.  for the remote locations we use AT&T as well as Quest.
Its driving me crazy...  Our corporate link is Air band.  
I can't seem to track down the problem.  These links have been running for
2+ years and this is the first time we have had a consistent problem like
this.
I have adjusted the icakeepaliveinterval down and the tcpmaxdataretransmit
up and that seemed to help.  Went from a 30sec connect to the 10-30 min
connect.
If anyone has any additional input, any at all I would be most grateful... 
Wes 
-----Original Message----- 
From:   thin-bounce@xxxxxxxxxxxxx [SMTP:thin-bounce@xxxxxxxxxxxxx] 
Sent:   Wednesday, July 16, 2003 9:57 AM 
To:     thin@xxxxxxxxxxxxx 
Subject:        [THIN] Re: Disconnects 
Might be experiencing a DoS.  Contact AT&T, they should be able to 
monitor, find the culprits, and take action for you. 
Respectfully, 
 
Lucas W. Boyken 
Computer Systems Associates 
Account Manager / Technical Representative 
lboyken@xxxxxxxxx 
Company Phone:  800.222.7601 
Office Phone:  515.332.2751 
Fax:  515.332.5687 
 
-----Original Message----- 
From: Greg Reese [ mailto:GReese@xxxxxxxxxxxxxxxx
<mailto:GReese@xxxxxxxxxxxxxxxx> ] 
Sent: Wednesday, July 16, 2003 10:47 AM 
To: thin@xxxxxxxxxxxxx 
Subject: [THIN] Re: Disconnects 
 
I may have to give that a try.  I would like to have a packeteer here 
permanently but they are too expensive. 
I have been watching the traffic monitor on my firewall and I noticed 
that there are a lot of denied inbound ping and dns connections about 
every five to ten minutes.  A lot as in a hundred or so. 
I wonder if those might be momentarily freezing my internet connection 
causing a disconnect. 
Greg 
-----Original Message----- 
From: thin-bounce@xxxxxxxxxxxxx [ mailto:thin-bounce@xxxxxxxxxxxxx
<mailto:thin-bounce@xxxxxxxxxxxxx> ]On 
Behalf Of Randy Hunt 
Sent: Wednesday, July 16, 2003 11:18 AM 
To: thin@xxxxxxxxxxxxx 
Subject: [THIN] Re: Disconnects 
 
Greg, 
One thing I might add to the QoS solution is to evaluate a Packeteer 
PacketShaper.  This box can give you the visibility you need to help 
identify and possibly fix your WAN Citrix problems (you get visibility 
on how the client is connecting, performing, and at what speed they 
connect).  Most of the time it isn't ICA, but rather other applications 
competing for the bandwidth.  Evaluations are free, so you might as well 
give it a try, if not to only see what's going on.  Also, you won't have 
to change ISP's in order to do this and you do not need a box at both 
ends.  Only on the side where the Citrix Server Farm is located.  Check 
it out at www.packeteer.com 
Best regards, 
Randy 
-----Original Message----- 
From: thin-bounce@xxxxxxxxxxxxx [ mailto:thin-bounce@xxxxxxxxxxxxx
<mailto:thin-bounce@xxxxxxxxxxxxx> ]On 
Behalf Of Lucas Boyken 
Sent: Wednesday, July 16, 2003 11:06 AM 
To: thin@xxxxxxxxxxxxx 
Subject: [THIN] Re: Disconnects 
 
Greg, 
Look at your connection to the internet both at the provider side 
(citrix server) and client side.  Are all your users that are having 
problems going through the same provider?  Has anything changed as far 
as your connection to the INet goes with the Citrix server?  Have you 
run any tests are logging software to track the performance on both 
ends?  These are some things I would look into.  We have several 
customers that are expiriencing intermittant problems due to the ISP 
they have chosen.  No way around it other than working with the ISP (not 
a great chance as they are trying to do things as cheaply as possible) 
or go with a better QoS ISP. 
Hope this helps a little. 
Respectfully, 
 
Lucas W. Boyken 
Computer Systems Associates 
Account Manager / Technical Representative 
lboyken@xxxxxxxxx 
Company Phone:  800.222.7601 
Office Phone:  515.332.2751 
Fax:  515.332.5687 
 
-----Original Message----- 
From: Greg Reese [ mailto:GReese@xxxxxxxxxxxxxxxx
<mailto:GReese@xxxxxxxxxxxxxxxx> ] 
Sent: Wednesday, July 16, 2003 9:31 AM 
To: thin@xxxxxxxxxxxxx 
Subject: [THIN] Disconnects 
 
lately, anyone connecting to my citrix servers over the internet has 
been experiencing a lot of disconnects.  It happens to people running 
WinXP, Win2000, WIn98 etc.  All clients are feeling the pain.  It also 
happens to nFuse users, users with Program Neighborhood, and users with 
a custom .ica file. 
It happens the same way every time, it happens to me too so I know my 
users aren't crazy (at least not this time).  While working along typing 
or whatever, the session just appears to freeze.  Nothing, completely 
dead.  If I click the close button and click yes to disconnect and then 
reconnect, I am right back where I was.  I just can't figure out why the 
session dies in the first place.  It has been working fine for well over 
a year.  It has just been the past month or so that it began doing this. 
I do have TCPMAxRetranmissions and ICAKeepalives setup.  I am running 
WIn2kSP2, MF XPa SP2/FR2. 
I have been trying everything I can think of but still nothing so maybe 
someone can help me out with a fresh angle to attack this from. 
Thanks! 
Greg 
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and 2003 Server Resources 
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