[THIN] Urgent Printing Issue - link flooding!
- From: Angela Smith <angela_smith9@xxxxxxxxxxx>
- To: <thin@xxxxxxxxxxxxx>
- Date: Sat, 3 May 2008 06:51:35 +1000
Hi
I have a very serious issue I need assistance with with.
Site 1
Head Office, Citrix farm, AD Server, Windows 2003 File Server
Site 2
Small Citrix Office, 25 users, local Windows 2003 Print Server
We have a small office (Site 2) connecting to our Citrix farm (Site 1) over a
1Mb link. The Small office has a local Windows 2003 Print Server. We have an
issue where the link is being flooded for the majority of the day. Our
Networks team have confirmed the traffic using all of the link is Citrix
(1494). I can only assume it is due to Printing but could be wrong..
The client workstations at Site 2 are Windows XP based. Users authenticate
over the WAN to AD (in Site 1). They are setup with Microsoft Network Printers
in Windows XP which get autocreated on the Citrix Server. I have setup a
Citrix Policy so only Universal Drivers are used (no Native Drivers) and also
using Indirect Printing. Applications used in Site 2 are mainly Web based but
most use JAVA. Users are complaining about Slow Printing and Slow Application
Access. Most likely due to link flooding and possible packet loss on link.
1) Is there a better way to configure Printing?
2) I was under the impression Indirect Printing is the way to go as the Citrix
Server are not on the same LAN as the Print Server?
3) Is there an easy way to determine exactly what ICA traffic is flooding the
link? The Networks team don't have any tools that will provide any more detail.
4) Is the link big enough? Is there a rule I can follow - ie 50kb per user?
5) I have not enabled Print bandwidth restrictions. Is this recommended to
limit the bandwidth a print job can use? What is the recommended setting for a
1Mb link? Some users print large reports - ie 300 pages which already takes
around 5 minutes before the Printer will start. Restricting the Print job
would make it even slower would it not?
6) What is the Print flow in my scenario. Troubleshooting may be easier if I
know the Printing process flow
Example - User Prints from Word in Citrix using Universal Driver
Citrix Server to Client (Print Job Compressed and sent as EMF image to client)
Client to Citrix Server (Compressed)
Citrix Server to Print Server (Compressed)
Print Server - Printer (Spools)
The above may be completely wrong. Please help me understand how Print flow
works in Citrix when Indirect Universal Driver Printing is used vs Universal
Driver Direct Printing.
7) Id like to know how big the Print traffic is when travelling from Citrix
Farm to client and whether there is a way to fix/control it. Is there an easy
way to measure this?
This is causing me alot of stress and any help would be really appreciative.
Regards
Angela
PS - I just worked all night looking at this issue so apologise if my
description isn't clear...
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