Release Notes : BIG-IP GTM and BIG-IP Link Controller 11.5.2

Applies To:

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  • 11.5.2

BIG-IP Link Controller

  • 11.5.2
Release Notes
Original Publication Date: 09/16/2015 Updated Date: 04/18/2019


This release note documents the version 11.5.2 release of BIG-IP Global Traffic Manager and BIG-IP Link Controller. You can apply the software upgrade to systems running software versions 10.1.0 (or later) or 11.x.


Supported platforms

This version of the software is supported on the following platforms:

Platform name Platform ID
BIG-IP 1600 C102
BIG-IP 3600 C103
BIG-IP 3900 C106
BIG-IP 6900 D104
BIG-IP 8900 D106
BIG-IP 8950 D107
BIG-IP 11000 E101
BIG-IP 11050 E102
BIG-IP 2000s, BIG-IP 2200s C112
BIG-IP 4000s, BIG-IP 4200v C113
BIG-IP 5000s, 5050s, 5200v, 5250v C109
BIG-IP 7000s, 7050s, 7200v, 7250v D110
BIG-IP 12250v (requires 11.6.0 HF2) D111
BIG-IP 10350N (requires 11.6.0 HF2) D112
BIG-IP 10000s, 10050s, 10200v, 10250v D113
VIPRION B2100 Blade A109
VIPRION B2150 Blade A113
VIPRION B2250 Blade A112
VIPRION B4100, B4100N Blade A100, A105
VIPRION B4200, B4200N Blade A107, A111
VIPRION B4300, B4340N Blade A108, A110
VIPRION C2200 Chassis D114
VIPRION C2400 Chassis F100
VIPRION C4400, C4400N Chassis J100, J101
VIPRION C4480, C4480N Chassis J102, J103
VIPRION C4800, C4800N Chassis S100, S101
Virtual Edition (VE) Z100
vCMP Guest Z101

These platforms support various licensable combinations of product modules. This section provides general guidelines for module support.

Most of the support guidelines relate to memory. The following list applies for all memory levels:

  • vCMP supported platforms
    • VIPRION B2100, B2150, B2250, B4200, B4300, B4340N
    • BIG-IP 5200v, 7200v, 10200v

Memory: 12 GB or more

All licensable module-combinations may be run on platforms with 12 GB or more of memory, and on VE and vCMP guests provisioned with 12 GB or more of memory. Note that this does not mean that all modules may be simultaneously provisioned on all platforms with 12 GB or more of memory. The BIG-IP license for the platform determines which combination of modules are available for provisioning.

Memory: 8 GB

The following guidelines apply to the BIG-IP 2000s, 2200s, 3900, 6900 platforms, to the VIPRION B4100 and B4100N platforms, and to VE guests configured with 8 GB of memory. (A vCMP guest provisioned with 8 GB of memory has less than 8 GB of memory actually available and thus does not fit in this category.)

  • No more than three modules should be provisioned together.
  • On the 2000s and 2200s, Application Acceleration Manager (AAM) can be provisioned with only one other module.

Memory: Less than 8 GB and more than 4 GB

The following guidelines apply to platforms, and to VE and vCMP guests provisioned with less than 8 GB and more than 4 GB of memory. (A vCMP guest provisioned with 8 GB of memory has less than 8 GB of memory actually available and thus fits in this category.)

  • No more than three modules (not including AAM) should be provisioned together.
  • Application Acceleration Manager (AAM) cannot be provisioned with any other module; AAM can only be provisioned standalone.
  • Analytics (AVR) counts towards the two module-combination limit (for platforms with less than 6.25 GB of memory).

Memory: 4 GB or less

The following guidelines apply to the BIG-IP 1600 and 3600 platforms, and to VE and vCMP guests provisioned with 4 GB or less of memory.

  • No more than two modules may be configured together.
  • AAM should not be provisioned, except as Dedicated.

vCMP memory provisioning calculations

The amount of memory provisioned to a vCMP guest is calculated using the following formula: (platform_memory- 3 GB) x (cpus_assigned_to_guest/ total_cpus).

As an example, for the B2100 with two guests, provisioned memory calculates as: (16-3) x (2/4) ~= 6.5 GB.

For certain platforms, the vCMP host can allocate a single core to a vCMP guest. However, because a single-core guest has relatively small amounts of CPU resources and allocated memory, F5 supports only the following products or product combinations for a single-core guest:

  • BIG-IP LTM standalone only
  • BIG-IP GTM standalone only
  • BIG-IP LTM and GTM combination only

Configuration utility browser support

The BIG-IP Configuration Utility supports these browsers and versions:

  • Microsoft Internet Explorer 8.x, 11.x
  • Mozilla Firefox 27.x
  • Google Chrome 32.x

User documentation for this release

For a comprehensive list of documentation that is relevant to this release, refer to the BIG-IP GTM / VE 11.5.2 Documentation page.

New in 11.5.2

There are no new features specific to Global Traffic Manager/Link Controller.

New in 11.5.1

There are no new features specific to Global Traffic Manager/Link Controller.

New in 11.5.0

Global Traffic Menu Changes

In previous releases, in the Configuration utility of the BIG-IP Global Traffic Manager, the Global Traffic menu was a top-level menu on the Main tab. With this release, the Global Traffic menu has been changed to the GSLB menu and placed under the top-level DNS menu. The purpose of this change is to illustrate that global server load balancing is a subset of the DNS features that are available on the BIG-IP system. This is important, because F5 Networks will be offering expanded DNS features in the future.

DNS Zone Replaces DNS Express Zone

In previous releases, in the Configuration utility of the BIG-IP system, you could create a DNS Express zone to utilize the DNS Express engine. With this release, the DNS Express zone has been renamed to DNS zone, and the configuration options for this object have changed. This change allows you to use one zone object to manage multiple features for each zone. For example, you can create a DNS zone and configure it to use the DNS Express engine by selecting an authoritative DNS server from which the BIG-IP system receives zone transfers for the zone. Additionally, you can specify DNS nameservers that are zone transfer clients for the zone. Alternatively, you can create a DNS zone proxy using the DNS zone.

DNS Cache and DNS64

You can now create a DNS profile where the DNS Cache field is Enabled and a resolver DNS cache is associated with the profile and the DSN IPv6 to IPv4 is set Secondary or Immediate. With this configuration, if a AAAA record request does not return a response, then the system makes an A record request and rewrites the A record response to a AAAA record and sends the response to the client.

DNS Cache and Local Zones

With this release, you can add a local zone to a transparent, resolver, or validating resolver DNS cache. You do this when you want the BIG-IP system to resolve queries, for small local zones, with authoritative responses.

DNS Cache and Forward Zones

With this release, you can add a forward zone to resolver or validating resolver DNS cache. You do this when you want the BIG-IP system to forward DNS queries that match the forward zones to specific nameservers, which resolve the query when the cache does not contain a response.

GPRS Tunneling Protocol (GTP) Monitor

You can now add a GTP monitor to the BIG-IP GTM system configuration. This monitor operates over the UDP protocol and supports GTP protocol versions 1 and 2. It sends a GTP Echo Request to a target and requires a well-formed GTP Echo Reply before marking the target as Up.

DNS Express and NAPTR Queries

The DNS Express engine now returns A, AAAA, and SRV records in the Additional section of a DNS response in response to a NAPTR query.

New iRule Command: DNS::scrape

A new LTM DNS iRule command was added to the BIG-IP system in this release. You can use the DNS::scrape command in the DNS_REQUEST and DNS_RESPONSE events for a virtual server with an associated DNS profile. You can use this command to parse the information in a DNS message based on user supplied arguments.

DNS Express and Zone Transfers

In previous releases, you could perform a zone transfer from a DNS Server to the BIG-IP system. With this release, additionally, zones that are transferred into DNS Express can notify other secondary DNS servers using AXFR NOTIFY. The DNS Express engine also supports TSIG keys for zones.

Maximized Enterprise Application Delivery Value

To make it easier and more affordable to get the Software Defined Application Services capabilities all organizations need, F5 introduces three software bundle offerings: Good, Better, and Best.
Provides intelligent local traffic management for increased operational efficiency and peak network performance of applications.
Good plus enhanced network security, global server load balancing, and advanced application delivery optimization.
Better plus advanced access management and total application security. Delivers the ultimate in security, performance, and availability for your applications and network.
You can learn more about these new software bundles from your F5 Networks Sales Representative.

Installation overview

This document covers very basic steps for installing the software. You can find complete, step-by-step installation and upgrade instructions in BIG-IP Systems: Upgrading Active-Standby Systems and BIG-IP Systems: Upgrading Active-Active Systems, and we strongly recommend that you reference these documents to ensure successful completion of the installation process.

Installation checklist

Before you begin:

  • Use BIG-IP iHealth to verify your configuration file. For more information, see SOL12878: Generating BIG-IP diagnostic data using the qkview utility (10.x - 11.x).
  • Update/reactivate your system license, if needed, to ensure that you have a valid service check date.
  • Ensure that your system is running version 10.1.0 or later and is using the volumes formatting scheme.
  • Download the .iso file (if needed) from F5 Downloads to /shared/images on the source for the operation. (If you need to create this directory, use the exact name /shared/images.)
  • Configure a management port.
  • Set the console and system baud rate to 19200, if it is not already.
  • Log on as an administrator using the management port of the system you want to upgrade.
  • Boot into an installation location other than the target for the installation.
  • Save the user configuration set (UCS) in the /var/local/ucs directory on the source installation location, and copy the UCS file to a safe place on another device.
  • Log on to the standby unit, and only upgrade the active unit after the standby upgrade is satisfactory.
  • Turn off mirroring.
  • If you are running Application Acceleration Manager, set provisioning to Minimum.
  • If you are running Policy Enforcement Manager, set provisioning to Nominal.
  • If you are running Advanced Firewall Manager, set provisioning to Nominal.

Installing the software

You can install the software at the command line using the Traffic Management shell, tmsh, or in the browser-based Configuration utility using the Software Management screens, available in the System menu. Choose the installation method that best suits your environment.
Installation method Command
Install to existing volume, migrate source configuration to destination tmsh install sys software image [image name] volume [volume name]
Install from the browser-based Configuration utility Use the Software Management screens in a web browser.

Sample installation command

The following command installs version 11.2.0 to volume 3 of the main hard drive.

tmsh install sys software image BIGIP- volume HD1.3

Post-installation tasks

This document covers very basic steps for installing the software. You can find complete, step-by-step installation and upgrade instructions in BIG-IP Systems: Upgrading Active-Standby Systems and BIG-IP Systems: Upgrading Active-Active Systems, and we strongly recommend that you reference these documents to ensure successful completion of the installation process.

After the installation finishes, you must complete the following steps before the system can pass traffic.
  1. Ensure the system rebooted to the new installation location.
  2. Use BIG-IP iHealth to verify your configuration file. For more information, see SOL12878: Generating BIG-IP diagnostic data using the qkview utility (10.x - 11.x).
  3. Log on to the browser-based Configuration utility.
  4. Run the Setup utility.
  5. Provision the modules.
  6. Convert any bigpipe scripts to tmsh. (Version 11.x does not support the bigpipe utility.)
Note: You can find information about running the Setup utility and provisioning the modules in the BIG-IP TMOS implementations Creating an Active-Standby Configuration Using the Setup Utility and Creating an Active-Active Configuration Using the Setup Utility.

Installation tips

  • The upgrade process installs the software on the inactive installation location that you specify. This process usually takes between three minutes and seven minutes. During the upgrade process, you see messages posted on the screen. For example, you might see a prompt asking whether to upgrade the End User Diagnostics (EUD), depending on the version you have installed. To upgrade the EUD, type yes, otherwise, type no.
  • You can check the status of an active installation operation by running the command watch tmsh show sys software, which runs the show sys software command every two seconds. Pressing Ctrl + C stops the watch feature.
  • If installation fails, you can view the log file. The system stores the installation log file as /var/log/liveinstall.log.

Upgrading from earlier versions

Your upgrade process differs depending on the version of software you are currently running.

Warning: Do not use the 10.x installation methods (the Software Management screens, the b software or tmsh sys software commands, or the image2disk utility) to install/downgrade to 9.x software or operate on partitions. Depending on the operations you perform, doing so might render the system unusable. If you need to downgrade from version 10.x to version 9.x, use the image2disk utility to format the system for partitions, and then use a version 9.x installation method described in the version 9.x release notes to install the version 9.x software.

Upgrading from version 10.1.0 (or later) or 11.x

When you upgrade from version 10.1.0 (or later) or 11.x software, you use the Software Management screens in the Configuration utility to complete these steps. To open the Software Management screens, in the navigation pane of the Configuration utility, expand System, and click Software Management. For information about using the Software Management screens, see the online help.

Upgrading from versions earlier than 10.1.0

You cannot roll forward a configuration directly to this version from BIG-IP version 4.x, or from BIG-IP versions 9.0.x through 9.6.x. You must be running version 10.1.0 software. For details about upgrading to those versions, see the release notes for the associated release.

Automatic firmware upgrades

If this version includes new firmware for your specific hardware platform, after you install and activate this version, the system might reboot additional times to perform all necessary firmware upgrades.

Fixes in 11.5.2

ID Number Description
ID 442980 All pool members returned now have their statistics increased.
ID 473577 GTMd now receives updated information about changes to WideIP Alias/topology configuration items.
ID 473759 Unrecognized DNS records no longer cause mcpd to core during a DNS cache query.
ID 476599 In this release, the system clears suspended iRules that have failed before executing new events.
ID 476683 DNS_RESPONSE events are now resumed after suspension.
ID 473139 GTM IMAP monitor now marks a working IMAP server up.
ID 490225 GTM/mcpd now checks for an existing key and does not import keys that already exist.

Fixes in 11.5.1

ID Number Description
446540 TMM will no longer core/restart with this backtrace due to large DNS sub-cache sizes. Please note that it is still advised to restrict cache size to 10x the defaults to avoid TMM memory starvation issues.
448846 A crash bug related to HSM and memory exhaustion has been fixed.

Fixes in 11.5.0

ID Number Description
ID 391999 [LB::server addr] will now return an empty object if there's no address and will no longer return previous address.
ID 412112 "GTM has in the past incorrectly added Self IPs that correspond to gateway pool members. GTM should only add these Self IPs if Link Discovery is enabled on the server. LC will always add these Self IPs. This bug corrects that behavior."
ID 422698 Since DHCP Relay servers are link local, we no longer attempt to send them to any GTMs.
ID 423317 Link status for GTM server and virtual server IPs should work properly now after a config load.
ID 424997 Big3d no longer restarts in certain circumstances when retrying a connection to mcpd, and no longer produces a segmentation fault.
ID 425568 This release contains a fix for the intermittent hang of SQL monitors when cached database connections are closed on the server.
ID 429127 Changes in the DNS Zone Files are now properly synchronized between peer GTM group members.
ID 430200 When an explicit link is changed by a user on a server or virtual server configuration, the updated links should apply immediately.
ID 431157 GTM will now correctly include all information necessary for the monitor to make the correct determination of status.
ID 432541 GTM topology longest match sorting now correctly orders wildcard and negated records above other types of topology records.
ID 433358 The Active member of the HA Link Controller pair will not display the correct stats and the will apply the correct traffic based limits.

Behavior changes in 11.5.2

There are no Global Traffic Manager/Link Controller-specific behavior changes specified for this release.

Behavior changes in 11.5.1

There are no Global Traffic Manager/Link Controller-specific behavior changes specified for this release.

Behavior changes in 11.5.0

ID Number Description
ID 415432 "lsn-pool Inbound setting now has 3 possible values. DISABLED - no inbound connections can be established. EXPLICIT - Inbound connections may only be established (EIF supported) only when explicitly created by iRules or PCP AUTOMATIC - EIF is enabled for all LSN connections. This is the same behavior as ""Enabled"" in 11.4.0 and 11.3.0."
ID 417956 "For CGNAT NAT64 inbound connection, the inbound packet's source IPv6 address will be an RFC6052 mapped address using the 96 bit prefix associated with the virtual server for the subscriber's NAT session. In order for this to work, the virtual server should have a destination prefix that could then be used to correctly apply the IPv4-in-IPv6 address mapping. If the destination network is a wildcard, 0::0 then the mapped address will be prefixed by all 0's. The Self-IP will only be used as the source address in the case of global SNAT."
ID 423663 There is now a command to list the PCP filters in the LSN database. Running the command 'lsndb list filters' displays the LSN Inbound mappings.
ID 423701 There is now a BIGDB variable called tm.lsn.dnat_suppress_logs_period that controls the initial interval time in seconds in which DNAT logs are suppressed to avoid flooding the log when blades are inserted and removed. Its default value is 300 seconds (5 minutes); and it can go down to zero; in which case no logs will be suppressed.
ID 425505 User can no longer associate virtual server with source prefix length of 0, with a lsn-pool in deterministic NAT mode. It is not a functional configuration, translation with source prefix length of 0 will use backup member pool if available, fail otherwise.
ID 427255 A global snat used to apply to LSN inbound connections. LSN inbound connections are now always transparent and never snatted.

Known issues

ID Number Description
ID 222220 Distributed application statistics shows only requests passed to its first wide IP. Using Distributed application statistics and multiple wide-IP-members. The system does not include statistics for requests passed to other wide-IP-members of the distributed application. Workaround:
ID 225759 Master key is not synchronized when you upgrade a BIG-IP Global Traffic Manager synchronization group to version 10.1.0 or later, Upgrading synchronization group to 10.1.0 or later. The master key is not synchronized to all members within the synchronization group. For step-by-step instructions to fix this known issue, see SOL11868: The master key may not be synchronized after upgrading a BIG-IP GTM synchronization group, available here: Workaround: After upgrading an existing sync group to dnssec, manually run fipssync and f5mku.
ID 325318 If log level is set to info, the system logs in the zrd log RR add/delete changes. Audit logging for ZoneRunner. The system does not log which user performed the change, or any changes other than add/delete of RR. Workaround:
ID 358268 The system allows you to specify a DNS64 Prefix of up to 128 bits (a full IPv6 address). However, a valid prefix is only the first 96 bits. This occurs when specifying a DNS64 prefix. The system uses only the first 96 bits. Workaround: if user enters 64:ff9b::1234:1234 and provides message that last 32 bits (last 2 hex tuples) must be all zeros. For example, 64:ff9b:0:0:0:0:0:0.
ID 361650 Starting with 11.0.0, it takes minimum of 15 seconds to a maximum of 60 seconds for BIG-IP GTM to save any configuration change, This occurs regardless of whether a configuration change is made in the Configuration utility or by using tmsh. This can have a 15-to-60-second delay when attempting to reload the GTM configuration immediately after a change operation. Workaround: To speed up this process, you can run the following command in tmsh: save sys config partitions all gtm-only. No equivalent of this command exists in the Configuration utility.
ID 363134 [Link Controller] Links get auto-discovered when global Auto-Discovery is disabled and Link Discovery is on. This occurs when disabling Auto-Discovery in Link Controller. Links get auto-discovered. Workaround: Disabling Link Discovery is the only way to truly disable this option.
ID 363142 [Link Controller] Global Auto-Discovery can be disabled while there is a link with the bigip_link monitor. This occurs when using the bigip_link monitor. Global Auto-Discovery stays disabled. Workaround: Do not disable global Auto-Discovery while having a link with bigip_link monitor.
ID 367459 The BIG-IP Configuration utility might incorrectly allow you to assign certain health monitors to pools and server objects that are configured with a wildcard service port. This occurs when using a wildcard service port. The BIG-IP system fails to pass traffic due to the configuration failing to load. GTM sync group members may fail to answer wide IP requests. For more information, see SOL12400: The BIG-IP Configuration utility may incorrectly enable you to assign certain health monitors to pools and server objects that are configured with a wildcard service port, available here: Workaround: There is no workaround for this issue. However, you can avoid this issue by assigning the pool health monitor before assigning a member-specific monitor to each pool member. The pool monitor assignment configuration validates and prevents the system from assigning an inappropriate health monitor to a wildcard destination service.
ID 370131 Pool members loaded from the UCS are not in the configuration. If there are objects dependent on them this may prevent the GTM config from loading completely. GTM and LTM are enabled, Autoconf Delay is very low, there are GTM autoconf'd pool members from LTM virtuals and subsequently a UCS is loaded. GTM config loaded from the UCS can be overwritten and Pool Members can be lost from it. Workaround: bigstart stop gtmd during UCS load, or set the autoconf delay to be much higher than the time required to load the UCS.
ID 372856 The GUI will return an error if you attempt to create a GTM pool using a server or virtual server that contains a '?' character in the name. Workaround: 'Create the pool without the virtual server first, then add the virtual server afterwards. The defect only occurs on the create page, not the Members properties page. Alternatively, tmsh and iControl both work.'
ID 381540 TMM restarts with a SIGTERM if zxfrd logging is set to debug and there is heavy load. This occurs with a GSLB + DNSX configuration, no pool associated with the listener, and BIND disabled in the DNS profile. If the unhandled query action is left at the default 'allow', then tmm restarts under load. It seems to occur at approximately at the 720,000-730,000 DNS qps level. TMM does not process traffic during the restart period. Workaround: If the unhandled query action is changed to 'drop', that resolves the issue.
ID 381541 TMM restarts under heavy load. With a GSLB + DNSX configuration, no pool associated with the listener, and BIND disabled in the DNS profile, if the unhandled query action is left at the default 'allow', then tmm restarts under load. It seems to be at roughly the same 720,000-730,000 DNS qps level as above. TMM will not process traffic during restart. Workaround: If the unhandled query action is changed to 'drop' that resolves the issue.
ID 385229 In GTM iRules IP::addr incorrectly always returns FALSE when comparing addresses with different masks. Using IP::addr GTM iRules. IP::addr incorrectly returns FALSE. Workaround: To work around this, ensure the addresses have the same mask when using IP::addr to compare addresses.
ID 401620 In previous releases, monitored BIG-IP virtual servers with addresses that overlap non-floating self IP addresses used to be marked up when the gateway_icmp monitor was used, but other, port-specific protocol monitors would fail. This was a false positive, as it is not possible to monitor virtual servers that overlap these addresses from the same box. In this release, gateway_icmp monitor marks a virtual server that overlaps an IPv6 self IP as down, but it marks a virtual server that overlaps an IPv4 self IP as up. The latter is still an issue. BIG-IP virtual servers with addresses that overlap non-floating self IP addresses. In this release, gateway_icmp monitor marks a virtual server that overlaps an IPv6 self IP as down, but it marks a virtual server that overlaps an IPv4 self IP as up. The latter is still an issue. Workaround: To work around this issue, use the bigip monitor for monitoring BIG-IP virtual servers with IP addresses that overlap non-floating self IP addresses. Do not use any other GTM monitors for monitoring those virtual servers.
ID 408504 The output of 'tmsh show gtm iquery' shows 'Configuration Time' FOR SELF with an unexpected value of '12/31/69 16:00:00,' although the output shows the PEER 'Configuration Time' with expected values. This occurs when GTM systems are configured for address translation, but the self IP addresses are not configured correctly: for example, server ( Address:, Translation: Because this configuration specifies only as the self IP address, the command does not show the expected 'Configuration Time' value because there is no way the system can determine that is the system configured with the self IP address. Running the command 'tmsh show gtm iquery' shows the value of 'Configuration Time' FOR SELF as '12/31/69 16:00:00'. Although the value might be unexpected, the command is working as designed. Workaround: The correct configuration is to set both and as self IP addresses. After correctly setting the self IP addresses, the command shows 'Configuration Time' for servers with IP translation enabled, as expected. As an alternative to configuring the self IP addresses, if you remove translation from the GTM server objects, the BIG-IP system shows 'Configuration Time' with the expected values.
ID 411515 The editing of builtin objects is not compatible with incremental sync. Editing of builtin objects and incremental sync. Note: It is not recommended to edit builtin objects; you should use inheritance when possible. For example, instead of editing a base profile you should create a new profile that inherits from the base profile using the defaults-from option; this profile can be synchronized over incremental sync. The same practice can be applied to monitors. For objects without inheritance (such as iApp templates) you must copy the builtin object into a new object. Incremental sync does not work because the system cannot sync read-only/builtin objects. Workaround: To synchronize an edit to a builtin object you must temporarily enable the device group's full-load-on-sync option; this option can be disabled after synchronizing the changes.
ID 421139 GTM not probing all accessible links, marking some in other data centers as down when they are up. GTM systems 1 and 2 exist in two data centers, each with a different link, but both GTM systems can access both links. If on GTM1 Big3d goes down, GTM2 flags the link associated with GTM1 as down instead of trying to probe it. Incorrect traffic re-direction, status reporting and synced GTM systems reporting different object statuses. Workaround: Create a new GTM data center that contains the unprobed link and the GTM system that is up.
ID 423317 Normally when a GTM virtual server points to an LTM virtual server that is local to the LC/GTM box, it will display the link that it is assigned by LC/GTM. When a user reloads the config file, virtual servers will lose their association with links. GTM or LC and LTM is provisioned, a GTM virtual server is pointed at an LTM virtual server on the same box, and a user runs tmsh load sys config. The user is unable to see the link associated with the LTM virtual server. Workaround: From the shell prompt on the BIG-IP: bigstart restart gtmd
ID 425108 If you create or modify a GTM link in tmsh to include a monitor, and attempt to list the available monitors using tab completion, only monitors of type bigip-link or gateway-icmp are listed. This issue occurs when all of the following conditions are met: -- Custom transparent monitor. -- Monitor type is not Gateway ICMP. -- Use tab completion in tmsh to display all available custom transparent. If the user attempts to apply a transparent http, https, tcp, tcp-half-open, or udp monitor, to a link, it will not be listed by tab completion. Workaround: You can work around this issue when associating the monitor with a GTM link using the tmsh utility. To do so, you can manually type the name of a custom transparent monitor.
ID 434737 Initial, and unset, values for the zone's serial numbers (primary and external) are '18446744073709551615'. This occurs on the External Serial and Primary Serial numbers. This number represents an unset value. Workaround: None. This value can be safely ignored when not using zone transfer signing. When using zone transfer signing, these values will be reset the first time a service-oriented architecture (SOA) record from the primary passes through the BIG-IP system.
ID 439979 'big3d uses SSL ticket extension, which caused problems with servers running old versions of OpenSSL. This causes the customer's webserver, that doesn't support this option, to fail with (alert 21, decryption failure).' GTM HTTPs monitor connecting to a webserver that doesn't support RFC 4507/RFC 5077 GTM Object is incorrectly marked down. Workaround: To work around this issue, you can write an external script that you can import to the BIG-IP GTM system, and then configure the system to use that script instead of the GTM HTTPS health monitor: For detailed information about how to work around this issue, see SOL15053: The BIG-IP GTM system may incorrectly mark a resource down when using the GTM HTTPS health monitor, available at
ID 442135 If you disable, then enable synchronization within 10 seconds, synchronization becomes disabled for all systems except one in a sync group. In a box of a sync group, The synchronization of the device group will be accidentally disabled. Workaround: After disabling synchronization on a system in a sync group, if you want to add it back, do so within 5 seconds or wait 15 seconds. For more information, see SOL15467: The BIG-IP GTM Synchronization option may stay in the disabled state after being re-enabled, available here
ID 442876 Running qkview or the command 'tmsh -q show gtm datacenter detail' does not work correctly for configuration in which an LTM server objects contains virtual servers with dependencies. This occurs as a result of LTM server objects hosting virtual servers configured with a dependency list. For example, having every virtual server dependent on every other virtual server for the virtual server to be up and green (in other words, for VS1 to be up VS2 must be up, and for VS2 to be up VS3 must be up, and so on. The mcpd process consumes all CPU and causes overdog to failover the GTM system. Workaround:
ID 452889 'GTM might return data from disabled pools for requests and server update stats. For example. under Global Traffic :: Servers : Statistics, you might see the following: 3) Throughput (bits/sec) In. 4) Throughput (bits/sec) Out. 5) Throughput (packets/sec) In. 6) Throughput (packets/sec) Out.' This occurs when you enable the Global GTM setting for Monitor Disabled Objects under GUI: System :: System :: Configuration :: Global Traffic :: General : Monitor Disabled Objects. The alive connections show updates for throughput stats, although no new connections are directed to the disabled servers. This is correct functionality. Workaround: None.
ID 456047 When using the web user interface to add server IP addresses to an existing Global Server Load Balancing (GSLB) server, any existing server IP addresses that have an explicit link configured are lost. This occurs after adding a new IP address to the server. This can be examined by using tmsh to list the server and its associated explicit link. If a link goes down, everything on the link goes down, so it is possible that unexpected resources will go down, if the GTM servers or virtual servers lose their explicitly defined links. Preliminary testing suggests that when these explicit links are lost, GTM might auto-match the server IP addresses (or virtual servers) to a different link, and this link might be different from the one the user explicitly configured. Workaround: When configuring servers that are using explicit links, using tmsh (not the web UI) to edit the server properties, prevents explicit links from being erased.
ID 463097 Large amount of data maintained in DNS Express zones. 'When DNS Express zones are updated, you may see messages similar to: notice tmm[25454]: 01010029:5: Clock advanced by 121 ticks in the /var/log/ltm log.' Workaround:
ID 468503 rpm -qa geoip-data will report a different version than what is installed via geoip_update_data. Workaround:
ID 471467 gtmparse segfaults when loading wideip.conf with duplicate vs names or names only differentiated by spaces. wideip.conf contains duplicate vs name definitions or the vs names are only unique because of leading or trailing spaces gtmparse will segfault during a wideip.conf load, causing gtm configuration load to fail. Workaround: Change vs definitions so that there are no duplicate named vs's, note that leading or trailing spaces will not count towards a unique vs name.
ID 472075 DNS-Express, specifically, the zxfrd process, does not support route domains. DNS-Express Nameserver with Route Domains. When configured with a nameserver containing a non-zero route domain, zxfrd ignores the setting when attempting to connect, always using rd0. Route domains cannot be used to zone transfer to the BIG-IP system. Workaround:
ID 474215 The periods and colons in GTM VS names were converted to underscores ('_') after upgrading to v11. upgrading from v10.X to v11.X Production monitoring when customer's production GTMs are upgraded Workaround:
ID 475109 'If dns profile with ''Unhandled Query Actions'' set to ''Reject'', dns queries could return successfully every other query and REFUSED every other query too. If dns profile with ''Unhandled Query Actions'' set to ''Allow'', dns queries might return differently for wideip and its alias' '1. Wideip contains some UP and some DOWN pools. 2. Return2DNS LB method configured as failback for pools.' DNS queries might get REFUSED even though there are other pools available. Workaround: Modify the pools to use 'none' as the Fallback Load Balancing Method
ID 475246 There may be cases where the Instances tab on a GTM monitor fails to list virtual servers which use the monitor. In the case where there are multiple monitors applied to a server, which are inherited by a virtual server. The user cannot rely on the instances tab to provide information about what a monitor is applied to. Workaround:
ID 476599 TMM panic when executing DNS_REQUEST event. The TMM panics when the following events have occurred: -DNS_RESPONSE event has been suspended. - DNS_REQUEST event is executed. TMM panic, followed by failover. Workaround:
ID 477240 An iQuery connection attempts to renegotiate SSL keys every 24 hours. Once every 24-hours after an iQuery connection is established. The response to this by big3d is to close the connection. All virtual servers go red. Workaround:
ID 479603 Neither DNS-Express nor DNSSEC supports configuration for a DNS Zone with the root name '.'. This occurs in DNS-Express nor DNSSEC. Cannot create a DNS Zone named '.'. Workaround:
ID 480795 Move address from one HA redundant LTM to another could cause bigip monitor failure. BIG-IP redundant LTM server configuration with one address at 'Address List' and another at 'Peer Address List', one of the addresses is moved from another. Only one of the redundant LTM systems get probed. If the probed LTM is standby, it ignores the probe request. Available BIG-IP redundant LTM server is marked down; the monitor does not work, and all hosted virtual servers are marked down. Workaround: Delete the moved address and add it back, or delete the redundant server and re-create it.
ID 486995 Objects that are dependent on a specific server name do not work as expected. For example, if the configuration contained a large number of objects (900 objects) based off one core GTM server, there is no way to rename an object if the GTM server is created with an incorrect name. This occurs when creating a GTM object using an incorrect name. Cannot rename GTM server object after creation. Workaround: A workaround for this situation is to directly modify the GTM configuration file, bigip_gtm.conf, doing a search and replace for old name with the new name. Perform the edits in a temporary file using a copy of the original. Once modified, You can replace the existing bigip_gtm.conf. Once replaced, run the command: 'tmsh load sys config gtm-only'. Important: This action causes the renamed server and its related pool members to become unavailable for the duration of one monitor interval.
ID 487144 'Customer may see the following critical error message showing that they can not locate the keys from the FIPS: ********************************************** FIPS acceleration device failure: cannot locate key' '1.There is FIPS card in the BIGIP 2.We need to retrieve the key from the FIPS card' SSL can not locate the key from the FIPS card, and SSL will not function properly. Workaround:
ID 491801 'When attempting to create this GTM iRule when DNS_REQUEST { LB::status up } you'll get this error in the logs: ''01070151:3: Rule [/Common/irule_test] error: /Common/irule_test:2: error: [invalid option ''up'' must be: vs pool mbr][up]''' Creating GTM iRules Can't use this specific iRule command syntax. Workaround:
ID 493300 In TMSH, GTM virtual servers are managed as children of their owning server. If a user attempts to delete a virtual server from a server, but incorrectly specifies the name of a virtual server that is defined under another GTM server, The command will delete that virtual server, instead of reporting that the virtual server does not exist. Use of TMSH to delete GTM virtual server combined with a user typo. Accidental deletion of a GTM virtual server. Workaround: Care in the execution of TMSH commands.
ID 494070 GTM cannot use a loopback address with fallback IP load balancing. GTM pool using fallback IP load balancing. Cannot configure a loopback address using fallback IP load balancing. Workaround:
ID 496775 [GTM] [big3d] Unable to mark LTM virtual server up if there is another virtual server with same ltm_name for bigip monitor. LTM with a virtual server: /Common/http_vip with destination /Common/ GTM with this LTM as a bigip Server. Two virtual servers on LTM: One with the original LTM virtual server address, and the other with the translated address: 1. name ltm_http_vip :: destination :: monitor /Common/bigip. 2. name ltm_http_trans_vip :: destination :: translation-address :: monitor /Common/bigip. Both virtual servers are marked up for a while, and then after a few minutes, one of them is marked down. Workaround: You can use either of the following workarounds: -- Use a monitor other than bigip. -- Replace /shared/bin/big3d on the LTM system with a copy of a version 11.2.1 (or later) big3d.
ID 497104 Dec 8 14:31:10 slot1/pm1-n1syd err tmm10[31888]: hash grow: malloc failed low memory condition probably due to memory leak or high memory usage ltm log flooded Workaround: 'Modify dnscacheresolver.loglevel to critical or emerg should stop the log spewing. tmsh modify sys db dnscacheresolver.loglevel value critical'
ID 499719 'General database error retrieving information' error in GUI. This occurs when using the GUI to view Statistics for DNS zones. Not able to view Statistics from GUI for DNS zones. Workaround: Use tmsh to view Statistics for DNS zones.

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