Coyote Point Systems Equalizer Specifikace Strana 66
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- ŘEŠENÍ PROBLÉMŮ
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Hodnocené. / 5. Na základě hodnocení zákazníků
Chapter 5: Configuring Equalizer Operation
54 Equalizer Installation and Administration Guide
If you change the stale timeout setting while partially established connections are currently in the
queue, those connections will be affected by the new setting.
To set the stale connection timeout, follow these steps:
1. Log into the Equalizer Administration Interface in Edit mode.
2. Select Equalizer > Global Configuration from the Equalizer menu in the main menu bar. The
modify system parameters screen appears in the right frame (see Figure 22 on page 43).
3. Enter a value, in seconds, for stale timeout (default is 15 seconds).
4. Click the commit button.
Enabling Sticky Network Aggregation
Sticky network aggregation enables Equalizer to correctly handle sticky connections from ISPs that
use multiple proxy servers to direct user connections. When you enable sticky network aggregation,
all the connections coming from a particular network are directed to the same server. (Typically, all
the servers in a proxy farm are on the same network.)
When you enable sticky network aggregation, Equalizer routes all the connections from a particular
network to the same server. The netmask value indicates which portion of the address Equalizer
should use to identify particular networks. The mask corresponds to the number of bits in the
network portion of the address:
• 8 bits corresponds to a Class A network
• 16 bits corresponds to a Class B network
• 24 bits corresponds to a Class C network
In previous versions of Equalizer, enabling sticky network aggregation was the equivalent of setting
the sticky network aggregation mask to 24 bits (that is, Equalizer routed all connections from the
same class C network to the same server).
Sticky network aggregation is applicable only for Layer 4 TCP and UDP clusters. For Layer 4
clusters with the spoof flag disabled and for Layer 4 clusters configured for FTP, a sticky record is
maintained for each connection whether sticky network aggregation is enabled or not.
To enable sticky network aggregation, follow these steps:
1. Log into the Equalizer Administration Interface in Edit mode.
2. Select Equalizer > Global Configuration from the Equalizer menu in the main menu bar. The
modify system parameters screen appears in the right frame (see Figure 22 on page 43).
Note – Reducing the stale connection timeout can be an effective way to counter the effects of
SYN flood attacks on server resources. A stale connection timeout of 10 seconds would be an
appropriate value for a site under SYN flood attack.
Note – A potential drawback of using sticky network aggregation is that all users connecting
through a particular proxy farm might be directed to the same server. In practice, this has not
been a problem. Equalizer’s load-balancing algorithms direct other visitors to different servers to
keep the load balanced.
- Equalizer 1
- Installation and 1
- Administration Guide 1
- Contents 3
- In This Guide 11
- Typographical Conventions 12
- Where to Go for More Help 12
- 1 Overview 13
- Introducing Equalizer 13
- Load Balancing UDP Services 14
- Chapter 1: Overview 16
- Geographic Load Balancing 17
- Figure 4) 19
- Equalizer’s Network Ports 20
- Using Reserved IP Addresses 26
- 2 Installing Equalizer 31
- Before You Install Equalizer 31
- Serial Connection 33
- Setting the Time Zone 37
- Setting the Date and Time 37
- Upgrading Equalizer Software 38
- Shutting Down Equalizer 39
- 4 Accessing Browser Controls 45
- Figure 17 The login screen 46
- Figure 19 Main menu bar 47
- Licensing Equalizer 51
- Requesting a License Offline 53
- Modifying System Parameters 55
- Failover Configurations First 64
- Enabling Outbound NAT 65
- Managing Stale Connections 65
- 4. Click the commit button 67
- Configuring Static Routes 69
- Modifying a Static Route 70
- Deleting a Static Route 70
- Managing System Time and NTP 71
- Enabling or Disabling NTP 72
- Selecting an NTP Server 72
- Saving Your Configuration 73
- Backing Up Your Configuration 74
- Rebooting Equalizer 75
- Working with Virtual Clusters 78
- Adding a Virtual Cluster 79
- Deleting a Virtual Cluster 86
- Enabling Persistent Sessions 92
- HTTPS Header Insertion 97
- Front-End-Https: on 98
- Adding a Server to a Cluster 100
- Deleting a Server 102
- Managing Servers 105
- Displaying Equalizer Status 112
- Displaying Server Information 119
- Displaying Site Information 124
- Configuring Plot Logs 125
- Exporting Usage Statistics 126
- 10.0.0.10) or 129
- Enabling the SNMP Agent 131
- MIB Description 132
- 8 Working with Match Rules 135
- Why Match Rules? 135
- Match Rule Processing 136
- Match Expressions 137
- Match Bodies 139
- Match Rule Definitions 139
- Managing Match Rules 140
- The Default Match Rule 141
- Creating a New Match Rule 141
- Match Functions 144
- Figure62 URI components 146
- Match Function Notes 148
- Example Match Rules 151
- Envoy Overview 161
- Enabling Envoy 164
- domain 165
- Adding a Geographic Cluster 167
- Working with Sites 169
- Envoy Configuration Worksheet 172
- A Using Server Agents 173
- Introducing Server Agents 173
- Enabling Agents 173
- Writing Server Agents 174
- B Using Reserved IP Addresses 177
- Equalizers 178
- C Regular Expression Format 179
- Learning About Atoms 179
- Creating a Bracket Expression 180
- Matching Expressions 181
- D HTTPS Cluster Certificates 183
- Clearing Secure Key Storage 193
- Using IIS with Equalizer 194
- Supported Cipher Suites 197
- Xcel I Card 198
- E Troubleshooting 199
- Equalizer Doesn’t Boot 199
- Appendix E: Troubleshooting 200
- Context Help Does Not Appear 202
- F License and Warranty 205
- G Additional Requirements 209
- Short-Circuit Protection 209
- Power Supply Cord 209
- Specifications 210
- °F, 5 - 40 °C 212
- Glossary 213
- 192.22.33.1 216
- ( 218
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