NetScaler Application Delivery Software 6.1: Load Balancing

Technotes Created Modified Read Rating
HTTP-ECV Monitor Probes Are Failing
Summary This document describes how to troubleshoot monitor of type HTTP-ECV. In this case, HTTP-ECV monitor probes sent by the NetScaler to the server are failing, even though the web page c...
CTX110167
8/30/06 10/15/08 5,584 55555
Description of the Redirect URL Feature
Summary This document describes the redirect URL option that may be applied to virtual servers (vservers) on the NetScaler. Background A virtual server of type HTTP or HTTPS may be configured...
CTX108946
4/7/06 10/13/08 9,955 55555
Why the State of a Vserver May Be DOWN
Summary This document provides a list of likely reasons a load balancing virtual server (vserver) may have a State or Effective State of DOWN. Background Virtual servers on the NetScaler may ...
CTX108960
3/29/06 9/23/08 5,725 Unrated
How to Set Up the Domain Name in the NetScaler Cookie
Summary This article describes how to control the domain name in the NetScaler cookie when cookie based persistence is used in a virtual IP (VIP). Background When cookie persistence is set on...
CTX110934
8/20/07 9/22/08 1,724 Unrated
NetScaler Behavior in Direct Server Return Mode when Handling Fragmented Packets
Summary This article describes how Netscaler handles fragmented packets in DSR mode and load balances the remaining fragment to the same backend server. Explanation For configurations where ...
CTX118068
9/11/08 9/11/08 193 Unrated
FAQ: How is the cookieDomain Field Used in Virtual Server Group Persistence?
Q:  How is the –cookieDomain field used in virtual server group persistence? A:  The value set in the cookieDomain field corresponds to the domain attribute set in the HTTP cookie. If Cookie ...
CTX110634
2/13/07 8/15/08 2,765 Unrated
Cookie-based Persistence Not Working on a Virtual Server in a Virtual Server Group
Summary Persistence is not maintained on the virtual server. The virtual server is part of a virtual server group using cookie based persistence configured. Symptoms If the connection from t...
CTX115936
3/14/08 8/15/08 658 55555
How to Configure SureConnect on a Virtual Server
How do I configure SureConnect to compensate for inadequate server capacity behind a vserver?
CTX118089
8/15/08 8/15/08 322 Unrated
Access to the Web Servers is not Available through the NetScaler Appliance
Symptoms You are not able to access the Web servers through the NetScaler appliance virtual servers (vservers) even though the vservers and services are running in the UP state. The vservers ...
CTX116878
4/17/08 8/8/08 779 Unrated
Case Study - Bookmarks on the NetScaler Appliance do not Work
Problem Definition A customer wanted to design a network topology that has two pairs of NetScaler appliances. The frontend NetScaler appliance pair has VPN configured on it and has a few book...
CTX117285
8/7/08 8/7/08 294 Unrated
Removing Idle Connections from a NetScaler Appliance
Summary This document contains information about removing the idle connections from a NetScaler appliance. Idle Connections At times, a user connected to the site might not disconnect after a...
CTX117948
8/4/08 8/5/08 430 Unrated
How to Load Balance TFTP Servers
Summary This article describes how to load balance Trivial File Transfer Protocol (TFTP) server using Reverse Network Address Translation (RNAT) and Use Source IP (USIP). Background TFTP is s...
CTX116337
6/24/08 6/24/08 497 Unrated
Case Study: The Primary NetScaler Appliance Cannot Detect a Replacement NetScaler Appliance to Create a High Availability Pair
Problem Definition The customer had originally connected a pair of NetScaler appliances with high availability. One of the appliances became defective and was replaced. When the customer conn...
CTX117292
6/24/08 6/24/08 498 55555
NetScaler Sessions Fail to Close
Symptoms You attempt to open a session to a Content Switching Virtual Server (vserver), but no request arrives. The Web browser on the client computer tries to connect for more than 20 minute...
CTX111504
5/28/08 5/28/08 464 Unrated
The DNS Server Fails to Resolve Domain Requests
Symptoms If the Domain Name System (DNS) server is not available, users cannot resolve domain requests. However, if you restart the switch and the DNS server, the issue is resolved. Cause Inv...
CTX116877
5/12/08 5/12/08 582 Unrated
How to Change the Mapped IP, NetScaler IP, and Routes Without Affecting the Production Traffic on a NetScaler High Availability Pair
summary This article describes how to change the Mapped IP (MIP), NetScaler IP (NSIP), and routes without affecting the production traffic on a NetScaler High Availability (HA) Pair. Because ...
CTX116835
5/9/08 5/9/08 1,005 Unrated
Configuring SSL with Backend Encryption on the NetScaler Appliance Causes Delay in Response
Symptoms In addition to the SSL offloading, when the NetScaler appliance encrypts the backend traffic to the server, the “Page cannot be displayed” message is displayed intermittently if the ...
CTX116874
5/9/08 5/9/08 648 Unrated
Virtual ID Conflict is Observed on the NetScaler High Availability Pair
Symptoms The console of the NetScaler appliance High Availability Pair displays an error message stating a conflict for the virtual ID (VRID). Cause You might have connected both the NetScale...
CTX116876
5/9/08 5/9/08 531 Unrated
How to Retrieve the Current Configuration after Upgrading the NetScaler Software on a High Availability Pair
Summary This article describes how to retrieve the current configuration after upgrading the NetScaler Software on a High Availability Pair. When you make any changes to the configuration of ...
CTX116837
5/9/08 5/9/08 555 55555
How to Enable TCP Traffic on a High Availability Pair after Upgrading it to the Latest Release of NetScaler Software
Summary This article describes how to enable TCP traffic on a High Availability pair after upgrading it to the latest release of NetScaler software. Consider the following scenario: A high av...
CTX116836
5/9/08 5/9/08 507 Unrated
How to Configure Outbound Link Load Balancing for Two ISP Links on a NetScaler Appliance with Reverse Network Address Translation
Summary This article describes how to configure Outbound Link Load Balancing for Two ISP Links on a NetScaler Appliance with Reverse Network Address Translation (RNAT) You apply the Link Load...
CTX116995
5/8/08 5/8/08 776 4444
The CPU Usage Reaches 100% and the Connections are Terminated on a NetScaler High Availability Pair
Symptom When you perform SSL offloading on NetScaler software release 6.1 on a high availability pair of NS9950 NetScaler appliances, the CPU usage reaches 100% and all the connections are te...
CTX116875
5/8/08 5/8/08 547 Unrated
How to Configure a Virtual Server and Services So That When a Predetermined Number of Services Fail, the Virtual Server Also Fails
Summary This document describes how to configure a virtual server and services in such a way that, if a predetermined number of services fail, the virtual server also fails. Background The Ne...
CTX115882
2/15/08 2/19/08 684 Unrated
How to Redirect Clients to a Custom 404 Error Page
Summary This article describe how to redirect clients to a custom 404 error page. Requirements The HTTP Rewrite feature must be enabled. Procedure Issue the following commands to redirect cli...
CTX115649
1/2/08 1/2/08 912 Unrated
How to Check the Average Response Time
Summary This document describes how to check the average response time from the server. Note : The found statistic "Average Response Time" in NetScaler 6.0 has been changed to "Aver...
CTX110894
8/8/07 8/9/07 1,962 Unrated
You Cannot Upload or Download Files Larger Than Two Gigabytes Through the NetScaler
Summary You cannot upload/download files larger than 2 gigabytes (GB) through the NetScaler. However, you can upload/download files smaller than 2 GB. Cause Load Balancing does not work correctly ...
CTX113508
6/8/07 6/8/07 2,098 55555
How to Allow Users to Disable Services of a Certain VIP Only
Summary This document explains how to setup a group to allow its users to disable services within a certain VIP only. Procedure There is currently no way to allow a user to disable services in a s...
CTX110892
3/27/07 3/27/07 2,666 Unrated
If Multiple Monitors are Bound to a Service, do All of the Monitors Have to Fail for the Service to be Disabled?
Q: If multiple monitors are bound to a service, do all of the monitors have to fail for the service to be disabled? A: No. It only takes one monitor to fail for a service to be disabled. In NetS...
CTX109851
7/3/06 11/21/06 5,100 Unrated
How to Configure Direct Server Return
Summary This article describes how to configure Direct Server Return (DSR). Background The concept behind DSR is that the traffic is sourced through the NetScaler, however, the return traffic from...
CTX110501
11/14/06 11/14/06 7,628 55555
How do You Implement Microsoft SQL Server Health Check Monitoring in NetScaler Version 6.1?
Q: How do you implement Microsoft SQL Server Health Check monitoring in NetScaler version 6.1? A: There is no support for writing Perl scripts for monitoring Microsoft SQL Server or MySQL in NetSc...
CTX110636
11/7/06 11/8/06 3,605 Unrated
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