Frequently Asked Questions

Frequently asked questions about the Zeus traffic management product family.

General Questions

• Can I run SPECweb or other benchmarks through ZXTM?
• What sources of information are available?
• I'm familiar with other Zeus products - what do I need to know about ZXTM?
• How do I change the IP address my license key is bound to?
• What are the different license key options?
• Configuring the SSL and TLS connections allowed by ZXTM
• Is ZXTM affected by the US Energy Policy Act?
• Server-first and Client-first Protocols
• When does ZXTM send email alerts and SNMP traps?
• How do I run my ZXTMs in Active-Active mode?
• ZXTM Usage Tracking information
• Whatever happened to ZXTM?

Capabilities

• Bandwidth Managment Requirements
• How many back-end servers can ZXTM address?
• How many distinct ports can I manage?
• Can ZXTM provide fault tolerance if a back-end server fails whilst sending data?
• Preserving the Client IP address to Apache servers and Applications
• Preserving the Client IP address to iPlanet/SunONE/Sun Java System Web Server servers and Applications
• How does the perceptive algorithm ramp up the load on new servers in a pool?
• How does Bandwidth Management work in ZXTM?
• How do I perform an unattended installation?
• How do I pass the client's IP address to my servers in an HTTP header?
• Using DNS names when configuring Pools

Installation

• Do I need to have more than one network card?
• What is $ZEUSHOME?
• Shared library problems on Solaris 8 and 9
• How do I upgrade my Zeus Traffic Manager software?
• I've run the ZXTM installer, but I can't get past the license agreement page.
• Zeus have provided me with my license key, yet ZXTM keeps rejecting it.
• How do I import ZXTM VA into VMware ESX 3.5
• How do I cluster ZXTM AFM 3.0?
• How do I upgrade ZXTM AFM 3.0 to Zeus Application Firewall Module 3.1?

Configuration

• What ZXTM settings are not exposed in the Admin Interface?
• How do I use an nCipher nFast Ultra card with ZXTM?
• How do I configure ZXTM with Internet Explorer 7?
• Integrating ZXTM with BEA Weblogic's T3 protocol.
• Microsoft Exchange and ZXTM :: Delivering a Secure Mobile Solution
• How do I create a chained SSL certificate?
• How do I get ZXTM system information through SNMP?
• SSL offloading for JBOSS and Tomcat servers.
• How do I connect a ZXTM Appliance to an nCipher NetHSM?
• How do I connect ZXTM software to external SSL hardware?
• How do I configure ZXTM with Firefox 3?
• How do I configure ZXTM to use the UltraSPARC T2 Crypto routines?
• Administration Best Practices

Tuning and Performance

• ZXTM FD fix patch
• ZXTM seems to keep lots of HTTP connections open. Why is this?
• How can I increase the number of connections that ZXTM can handle?
• How do File Descriptors affect ZXTM?
• ZXTM performance tuning
• I'm running GNU/Linux: Why is ZXTM using most of my server's physical memory?
• I'm running FreeBSD -- do you have any tuning recommendations?
• What effect does ZXTM's connection processing have on CPU usage?
• How many persistent sessions can ZXTM handle?
• Tuning Linux networking

Troubleshooting

• How to recompile a FreeBSD kernel with SSE support
• My web site or service isn't working - how can I tell if it is ZXTM that is at fault?
• When I plug a ZXTM in, why does it takes so long for it to come back into use?
• Solaris 10 on x86-64 Systems May Lose Track of Time on DST Change
• TCP Checksum errors
• How do I import certificates exported from Windows Server into ZXTM?
• Why am I still seeing new connections connecting to my draining node(s)?
• Why is ZXTM pinging my back-ends when I don't have a PING health monitor attached?
• What does the 'use_prefix has been deprecated' error mean (ZXTM Control API)
• Importing encrypted SSL certificates into ZXTM
• I've successfully upgraded to 4.1, but get 'failed to join cluster' errors.
• Why doesn't failover work properly with my Cisco hardware?
• Why am I having startup issues on SLES?
• License Key Bandwidth Limits
• How do I disable tcp fusion on OpenSolaris 2009.6
• CLI won't start, with XML Parser errors
• Why can't users connect to my multi-hosted IPs?

Amazon EC2

• What are the product codes, AMI IDs and manifest names for Zeus on EC2?
• How do I launch a new Zeus instance using Amazon's command line tools?
• How do I sign up to use Zeus AMIs on EC2?
• Do I need a license key to use a Zeus AMI on EC2?
• How do I configure my Zeus instance on EC2?

Zeus Appliance Hardware

• How do I upgrade an appliance from ZXTM 4.0?
• IP Spoofing protection may cause ZXTM Appliance to drop valid traffic
• What does the error 'Channel 1 is not a LAN channel' mean?
• How do I perform a memory test ?
• How do I upgrade a Virtual or Hardware Appliance to a later version of Zeus Traffic Manager?