Release Notes : BIG-IP GTM and BIG-IP Link Controller 11.5.1

Applies To:

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  • 11.5.1

BIG-IP Link Controller

  • 11.5.1
Release Notes
Original Publication Date: 09/16/2015 Updated Date: 04/18/2019


This release note documents the version 11.5.1 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 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 on the platform or provisioned guest. For vCMP support, 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 11.5.1 Documentation page.

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 11.5.1

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 11.5.1

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. The system does not include statistics for requests passed to other wide-IP-members of the distributed application. Workaround:
ID 225759 When you upgrade a BIG-IP Global Traffic Manager synchronization group to version 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 at AskF5 ( Workaround:
ID 341722 Global Traffic Manager uses BIND 9.7.3. This version of BIND can log a complicated message about not being able to load managed keys from a master file. If you have not configured Global Traffic Manager for DNSSEC Lookaside Validation (DLV), you might receive this message. System logs a benign message similar to the following: managed-keys-zone ./IN/external: loading from master file 3c4623849a49a53911c4a3e48d8cead8a1858960bccdea7a1b978d73ec2f06d7.mkeys failed: file not found Workaround: None. The message is cosmetic and you can ignore it. This is a known issue in BIND.
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, regardless of whether it is made in the Configuration utility or in tmsh. The only way to speed up this process is to run the following command in tmsh: save sys config partitions all gtm-only No equivalent of this command exists in the Configuration utility." Workaround:
ID 363134 Links get auto-discovered when global Auto-Discovery is disabled and Link Discovery is on. Disabling Link Discovery is the only way to truly disable this option. Workaround:
ID 363142 [Link Controller] global Auto-Discovery can be disabled while having a link with bigip_link monitor. Do not disable global Auto-Discovery while having a link with bigip_link monitor. Workaround:
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. For more information, see SOL12400 at 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. Workaround: Make sure to specify an Alias Port on a monitor when it needs to probe a specific service port on wildcard virtuals or pool members.
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 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 385229 In GTM iRules for 10.2.x, IP::addr will incorrectly always return FALSE when comparing addresses with different masks. To work around this, ensure that when using IP::addr to compare addresses, they have the same mask. Workaround:
ID 393090 When changing the syncer script to use ssh instead of iqsh a permission denied message is generated for gtm. Workaround: The workaround is to not use ssh in the syncer script.
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. 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 411515 The editing of builtin objects is not compatible with incremental sync. 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. 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 will need to copy the builtin object into a new object. Workaround:
ID 413902 If the sync group is intact and you are doing a rolling upgrade of your sync group from pre-v11.x to v11.x, you will experience flapping of the monitored objects due to the two versions not fully understanding iQuery messages. Could cause flapping of object status. Workaround: Use live install on volumes to complete upgrades on each system and then switch over all systems to the new v11.x systems at the same time, essentially, eliminating a window where the sync group contains both v11.x and pre-v11.x systems.
ID 415976 A full load across a GTM sync group may occur on the creation of a DNSSEC key under certain conditions. Workaround: Each device in a GTM sync group has a local ID viewable by running 'list sys db gtm.peerinfolocalid' from tmsh. One device will have a local ID of 0. This issue will not occur if DNSSEC keys are created from this device.
ID 418128 LB::status does not always return a value. This occurs when the following conditions are met: -- A pool is disabled or has all members disabled. -- That pool has never triggered an LB_SELECTED event after a reboot. -- The pool is specified to be used in a rule event prior to LB_SELECTED. LB::status returns a null value instead of 'session_disabled' or 'down' when used in the LB_SELECTED event. Workaround: None.
ID 425108 If you create or modify a gtm link in tmsh to include a monitor and attempt to list the available selections by using tab completion, only monitors of type bigip-link or gateway-icmp are listed. Always 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: The user must know the name of the monitor and can type it manually
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: "1. Write an external script monitor similar to the following: #!/bin/sh # GTM HTTPS TLS Session Tickets Workaround # Created on 12/5/2013 # For case 1-349097476 # v.0.0.1 # # # these arguments supplied automatically for all external pingers: # $1 = IP (nnn.nnn.nnn.nnn notation or hostname) # $2 = port (decimal, host byte order) # $3 and higher = additional arguments # # In this script, $3 is the directory to GET # $4 is the regular expression to match # pidfile=""/var/run/https_tls_sessionticket_workaround.$1..$"" if [ -f $pidfile ] then kill -9 `cat $pidfile` > /dev/null 2>&1 fi echo ""$$"" > $pidfile node_ip=`echo $1 | sed 's/::ffff://'` curl -k https://$1/$3 2> /dev/null | grep -E -i $4 > /dev/null status=$? if [ $status -eq 0 ] then echo ""up"" fi rm -f $pidfile 2. Import this Script (TMUI=>System=>File Management=>Import) 3. Create a GTM HTTPS Monitor of type 'External' that references this script 4. Include the directory ""salt"" and the regex ""Salty!"" on the 'Arguments' line if using the Apple VS in the repro This will be passed to cURL in the form of ""curl -k https://$1/$3 2> /dev/null | grep -E -i $4 > /dev/null"" Where $1 is the IP, $3 is the directory, and $4 is the regex 5. Remove GTM HTTPS monitor and assign a custom GTM External monitor to the Generic Host"
ID 442226 Link Controller will create a data center, but fails to create a GTM server for itself. Any LTM virtual servers configured will not show up as members in the Wide IP configuration. Always Users must manually create and maintain the GTM server Workaround: "Use tmsh to create a GTM server: Standalone: create gtm server <self host name> datacenter Default_DC addresses add { { device-name <self host name> } } virtual-server-discovery enabled product single-bigip Redundant: create gtm server <self host name> datacenter Default_DC addresses add { { device-name <self host name> } { device-name <peer host name>} } virtual-server-discovery enabled product redundant-bigip"
ID 442876 "Running qkview for this type of configuration(Creating an LTM server object that contains virtual servers with dependencies): 1) mcpd consumes all CPU 2) mcpd misses its heartbeat obligation 3) overdog triggers a failover due to mcpd heartbeat failure" "LTM server object hosting virtual servers configured with a dependency list. In this case, the customer has every VS dependent on every other VS for the VS to be UP and green. That is to say, for VS1 to be up VS2..N must be up, etc. Example used in Repro below. server { // datacenter=Tokyo-A, #VS=12 name ""websscl7f-da01p-t102c"" type bigip box { address unit_id 1 } monitor ""bigip"" vs { name ""vip_1.1.1.17_8080"" address // webcache depends_on { address // webcache address // webcache address // tproxy address // webcache address // webcache address // webcache address // webcache address // webcache address // webcache address // webcache address // webcache } } <snip>." Customer is unable to run qkview or 'tmsh -q show gtm datacenter detail'. Doing so will cause mcpd to consume all CPU and causes overdog to failover the GTM. Workaround:
ID 448914 Input validation and output escaping were absent for name field in GUI properties pages Workaround:
ID 449358 ZoneRunner allows you to create an invalid CNAME record with value ".". However, the GUI crashed when you attempt to remove it. Always Users who mistakenly enter "." as a CNAME will need to use the workaround to remove it. Workaround: "rndc freeze <zonename> Remove the entry from: /var/named/config/namedb/db.<viewname>.<zonename>. rndc thaw <zonename>"
ID 452443 DNS cache resolver or validating resolver does not function properly and fails to resolve DNS requests. BIG-IP is using non-default cmp hashes configured on its egress VLANs. It is difficult to both use non-default cmp hashes on system VLANs and use a DNS cache resolver on the same BIG-IP. Workaround: Configure a separate VLAN for the cache resolver's use that uses the default cmp hash. Set the system's default route to direct resolver traffic to this VLAN. This VLAN can be placed in a new route domain, if other features require route domain zero's default route pointing elsewhere.
ID 452889 "GTM might return answers from disabled pools for dig requests and update server stats: 3) Throughput (bits/sec) In. 4) Throughput (bits/sec) Out. 5) Throughput (packets/sec) In. 6) Throughput (packets/sec) Out." This occurs when a pool is disabled. The dig gets results for a disabled server and customer could direct traffic to that disabled server. Workaround: None.

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