(SOL14819) Purpose
You should consider using this procedure under the following conditions:
You have configured client certificate authentication for a Secure Socket Layer (SSL) profile.
You experience connectivity issues that relate to client certificate authentication.
Description
Client certificate authentication is acryptographic validation method that allows the client to first verify the identity of the server during the SSL/TLS handshake, after which, the server verifies the identity of the clien
Troubleshooting: Troubleshooting client certificate authentication
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How-To: Importing the SSL certificate and key using the Traffic Management Shell
(SOL14031) Purpose
You should consider using this procedure under the following condition:
You want to import a new Secure Socket Layer (SSL) certificate and key file using the Traffic Management Shell (tmsh), and then associate them to an SSL profile.
Prerequisites
You must meet the following prerequisites to use this procedure:
You have command line access to the BIG-IP system.
You have the required files to import into the BIG-IP system as the SSL certificate and key.
You have the Secure Copy (SCP)
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How-To: Using the Receive Disable String advanced configuration setting
(SOL12818) The Receive Disable String (RECV drain string) advanced configuration setting, which was introduced in BIG-IP 10.2.0, enables you to disable a pool member or node based on the response the system received from the server. This setting applies to the following monitors:
HTTP
HTTPS
TCP
UDP
Note: For more information regarding monitors and configuring monitors, refer to the Configuration Guide for your specific BIG-IP product.
The system uses the Receive Disable String value in conjunction wit
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How-To: Configuring the BIG-IP system to use an SSL chain certificate (11.x)
(SOL13302) This article applies to BIG-IP 11.x. For information about other versions, refer to the following article:
SOL6401: Configuring the BIG-IP to use an SSL chain certificate (9.x - 10.x)
Purpose
You should consider using these procedures under the following condition:
You need to configure an SSL profile to use an SSL chain certificate on the BIG-IP system.
Prerequisites
You must meet the following prerequisites to use these procedures:
You must have the public root or intermediate certificate
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How-To: Testing SNMP traps on the BIG-IP system (9.4.x - 11.x)
(SOL11127) This article applies to BIG-IP 9.4.x through 11.x. For information about other versions, refer to the following article:
SOL7165: Testing SNMP traps on BIG-IP (9.0.0 - 9.3.x)
SNMP traps are triggered when the alertd process receives input from the syslog-ng utility that matches an alert code. The alertd process then performs the action specified in the /etc/alertd/alert.conf file, such as sending an SNMP trap.
When configuring or troubleshooting SNMP traps on the BIG-IP system, you may want to
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How-To: Managing SSL certificates for BIG-IP systems
(SOL14620) Purpose
You should consider using this procedure under the following condition:
You want to manage new or existing SSL certificates for BIG-IP SSL profiles using the Configuration utility.
Prerequisites
You must meet the following prerequisite to use this procedure:
You have Administrator or Certificate Manager access to the BIG-IP Configuration utility.
Description
The BIG-IP software offers features that allow you to control SSL traffic that is destined for BIG-IP virtual servers. One of
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Informational: BIG-IP GTM synchronization group requirements
(SOL13734) Summary
A BIG-IP GTM synchronization group is a collection of multiple BIG-IP GTM systems that synchronize BIG-IP GTM configuration settings and metrics information. You must meet several minimum requirements for BIG-IP GTM synchronization group members to communicate and synchronize properly.
Description
For the BIG-IP GTM synchronization group members to properly synchronize their configuration settings, verify that the following requirements are in place:
BIG-IP GTM synchronization group me
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Informational: Applying a monitor to a BIG-IP GTM virtual server may override the monitor of its parent server
(SOL12814) This article describes a specific behavior of the bigip monitor, which you should consider when you configure the BIG-IP GTM system.
When you define a BIG-IP system as a server object on a BIG-IP GTM system, you generally assign the bigip monitor to the BIG-IP server object. The bigip monitor gathers metrics and statistics information that the remote BIG-IP system acquires through local monitoring of its own resources. For example, the bigip monitor can automatically discover and periodically up
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Informational: How the BIG-IP system handles SNAT port exhaustion
(SOL8246) When you configure a SNAT on a BIG-IP virtual server, the source address of each connection is translated to a configured SNAT address, and the source port is mapped to a port currently available for that address. If only one SNAT address is used, then the maximum concurrent connections that can be handled is 65,535.
Note: The port limit is not a limitation of IP, but a restriction of User Datagram Protocol (UDP) and TCP, since the port information is contained within a defined UDP and TCP heade
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Informational: BIG-IP LTM resets TCP connections after sending three SYN retransmissions for a connection
(SOL10372) By default, when communicating with a slow or unresponsive pool member, the BIG-IP system sends three SYN retransmissions for a connection before sending a TCP reset to the client system.
Note:For more information about TCP resets, refer to SOL9812: Overview of BIG-IP TCP RST behavior.
For example, when a client system makes a TCP connection to a BIG-IP virtual server that is configured with a TCP profile and a pool, the BIG-IP system selects a pool member and initiates a TCP SYN request t
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How-To: Installing the BIG-IP Edge Client from the Windows command line
(SOL13710) Purpose
You should consider using this procedure under the following condition:
You want to perform an automated install the BIG-IP Edge Client.
Prerequisites
You must meet the following prerequisites to use this procedure:
Have a Windows client system
Have a connectivity profile configured for the BIG-IP APM system
Be familiar with the msiexec command
Description
As an alternative to GUI-based installation, you can install the BIG-IP Edge Client components for Microsoft Windows using comma
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How-To: Creating an SSL device certificate and key pair using OpenSSL
(SOL9114) The SSL device certificate is used by an F5 system to identify itself to a requesting F5 client system. For example, the device certificate is used for device-to-device communication processes, such as configuration synchronization (ConfigSync) and big3d.
The SSL device certificate is located in the /config/httpd/conf/ssl.crt/server.crt file on the BIG-IP system. The SSL device key is located in the /config/httpd/conf/ssl.key/server.key file on the BIG-IP system.
Generating a new self-signed dev
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Overview: Overview of the vCPU limits for the BIG-IP Virtual Edition license
(SOL14810) Summary
This article discusses the vCPU enforcement criteria for the BIG-IP Virtual Edition (VE) license.
Description
The Good, Better, Best Bundle licenses and certain standalone module licenses for the BIG-IP VE are enforced with the maximum allowed throughput rate, and each throughput rate limits a maximum allowed vCPU restriction. The number of vCPU restricts the number of Traffic Management Microkernel (TMM) threads allowed to run. The following table shows the maximum allowed vCPU restrict
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Error Message: Error Message: 011ae00b:3: Could not find monitor object
(SOL14401) Error Message
gtmd[<Process-ID>]: 011ae00b:3: Could not find monitor object <IP-Address>:<Port-Number>
In this error message, note the following:
<Process-ID> is the process identification number for the gtmd process
<IP-Address> is the IP address of the BIG-IP GTM system that was being monitored
<Port-Number> is the port number of the BIG-IP GTM system that was being monitored
For example:
gtmd[8566]: 011ae00b:3: Could not find monitor object 10.1.1.100:0
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Overview: Overview of the OneConnect profile
(SOL7208) The BIG-IP system OneConnect feature can increase network throughput by efficiently managing connections created between the BIG-IP system and back-end pool members. The OneConnect feature works with HTTP Keep-Alives to allow the BIG-IP system to minimize the number of server-side TCP connections by making existing connections available for reuse by other clients.
For example, when a client makes a new connection to a BIG-IP virtual server configured with a OneConnect profile, the BIG-IP system
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Informational: HTTP health checks may fail even though the node is responding correctly
(SOL3224) HTTP or HTTPS health monitor requests may fail even though the server appears to respond, as expected, to browser requests. Three common causes are as follows:
The Receive String appears too late in the server response.
There is an HTTP version mismatch.
The server responds with a meta-refresh oraredirect.
The Receive String appears too late in the server response
If the Receive String is not found within the first 5,120 bytes of the server response, the server is marked down. For more informa
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Known Issue: The BIG-IP system may incorrectly remove trusted device SSL certificates
(SOL13841) Description
The BIG-IP system may incorrectly remove all trusted device SSL certificates with matching subject fields. This issue occurs when all of the following conditions are met:
The BIG-IP system has multiple trusted device certificates with matching subject fields.
One of the certificates with matching subject fields is removed from the Configuration utility.
Typically, when a certificate is renewed or exchanged multiple times between BIG-IP systems using bigip_add or big3d_install, the
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Informational: An incomplete iQuery mesh across a sync group may result in inconsistent responses or configuration loss
(SOL9837) If a BIG-IP GTM sync group has an incomplete iQuery mesh, it is possible forBIG-IPGTM configuration changes to be lost, or for BIG-IP GTMsystemsin the same sync group to provide different answers to the same query.
The gtmd process on each BIG-IP GTM system will attempt to establish an iQuery connection to a remote system's big3d process. By default, the big3d process listens on each self IP address defined on each BIG-IP server object listed in the BIG-IP GTM configuration. If Link Discovery is
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Change in Behavior: sFlow traffic will use only the self IP address of the BIG-IP system as the egress interface
(SOL15193) Old Behavior
In versions prior to BIG-IP 11.4.0, sFlow traffic may use the BIG-IP system management interface as the egress interface.
Note: sFlow was introduced in BIG-IP 11.2.0. You can configure the BIG-IP system to poll internal data sources and send data samples to an sFlow receiver. For more information about configuring sFlow in BIG-IP 11.2.0, refer to the Configuring Performance Monitoring chapter in the BIG-IP TMOS: Implementations guide.
New Behavior
Beginning in BIG-IP 11.4.0, sF
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Troubleshooting: Troubleshooting BIG-IP GTM synchronization and iQuery connections (11.x)
(SOL13690) This article applies to BIG-IP GTM 11.x. For information about other versions, refer to the following article:
SOL14227: Troubleshooting BIG-IP GTM synchronization and iQuery connections (10.x)
Purpose
You should consider using this procedure under the following condition:
You are experiencing BIG-IP GTM synchronization and iQuery connection issues.
Description
A BIG-IP GTM synchronization group is a collection of multiple BIG-IP GTM systems that share and synchronize configuration settings.
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