F5 to load balance MS Sql Servers
Hello All: I am presented with a tricky situation by the business users here at my company. After seeing the performance and manageability with all the Web Servers and App Servers with F5 LTM, now they want to see if we can do the same for Database Servers. Right off my head, I said its doable but took time to get back with more details and here am. Is there a solutions guide or something that gives more insight on setting up Database servers behind LTM. I am not sure if anyone ever did this before, at least I never saw any company using F5 to load balance DB. I am not sure even this is possible. Please advice. Appreciate you help. Thanks, Chenna
IP address and domain name restrictions in IIS
Has anyone come up with a solution for "IP Address and Domain Name Restrictions" settings in IIS behind an f5? I would like to restrict access to our web servers running a private application from specific addresses (trusted source), generally you can add these in IIS and control and manage who will be able to access your private application by granting or denying access. ThanksProblems load balancing printing
Followed this guide to configure load balancing MS printing with npath routing: http://blog.loadbalancer.org/load-balancing-microsoft-print-server/ The problem is when I try to connect to the printer with the FQDN of virtual server (eg. \\virtualserver.mydomain.com) I get the error "Operation could not be completed (error 0x00000709). Double check the printer name and make sure that the printer is connected to the network.". If I connect to the VIP (eg. \\192.168.0.10) it works fine. If I connect to the host directly (by hostname or IP) it works fine. Any ideas?
Prompting for passwords
I have set up a virtual server with only one server behind it. It is a simple HTTP connection, however when I try to access the application, I am prompted to enter my userid and password. When accessing the application directly on the server this is not the case. To make things even worse, I have now discovered that some users are not prompted when accessing via the F5 while others still are. No one is prompted when not passing thru the F5.f5 versus SAP Web Dispatcher
My organization is looking to load balance a number of SAP Enterprise Portal instances and a schism has developed between using f5 versus the SAP Web Dispatcher for this purpose. I've read through the other threads here and found *some* information that aids this discussion but I am looking for a more critical way to differentiate when to use the Web Dispatcher versus using f5. Does some sort of analysis exist out there that draws out the details between these two options?
RDS Farm not Balancing
Here's my setup: 1 server hosting RDS Gateway & Web Access roles 1 connection broker 2 RDS Sessions hosts in a farm (All are Windows Server 2008 R2) I have the Session Hosts load balanced via my LTM as described in the RDS Deployment Guide. The Gateway/Web Access server and the Connection Broker are just single servers and are not setup in the F5 at all. I have a RemoteApp published to the Web Access server, and it works just fine... However, the load is not being distributed. Right now I have 20 sessions on Session Host 2, and only two on Session Host 1. Of those, 11 are disconnected but still logged in, and 9 are actually active (all on Node 2) If I login to the F5 and look at the statistics for the Virtual Server, it says there is currently only 1 connection. I suspect this is part of the problem, since the pool is set to load balance via "Least Connections (member)" Not exactly related, but it also appears to not be creating persistence records, (The virtual server is set to use MSRDP persistence, but none show up on the Statistics report.) Any ideas?"403 - Forbidden: Access is denied." when accessing Exchange Control Panel (ECP)
I am running BIG IP VE 10.2.2, and have published Exchange 2010 using the Template Wizard. I can acces OWA fine, but when I try to view the ECP by going to Options > See All Options, I get the following error: "403 - Forbidden: Access is denied. You do not have permission to view this directory or page using the credentials that you supplied." I have tried enabling Windows authentication on my ECP vdir in IIS with no luck. Anyone have any idea why this is happening? I can access the ECP just fine when bypassing the VIP and pointing my browser directly to the CAS, or when using TMG. Thanks, Adam
Timeout settings
Hello, We have notices that it seems that http sessions appear to timeout more quickly when using the f5 than when using a direct connection to the server. I have done my own testing and have seen that side by side, a connection utilizing the alias that passes through the f5 did in fact timeout before another browser session that I had where I logged in directly using the server hostname (and with a different userID to make sure that the sessions were completely separate). Here is the error: 500 Internal Server Error SAP J2EE Engine/7.00 The Web Dynpro Application 'WebUI' has expired. Restart the application using the Refresh button or via the following link WebUI. Details: No details available Again I tested this side by side with and without the f5, so I do not believe it is an application setting. I am sure there is a simple setting on the f5 that can address this, but not being an f5 administrator, I will need your help to know what to ask for. Along the same lines, we have also seen that when making a large number (50 to 100) of web service calls through the f5 at the same time, some of them will not execute successfully, as opposed to executing the calls using the hostname of an application server where all of the calls are successful. I was thinking this may be some kind of timeout on the f5 side as well. These are two completely separate issues, but I would appreciate any advice on either. Thanks, Brian
