f5networks.f5_modules.bigip_profile_tcp module – Manage TCP profiles on a BIG-IP

Note

This module is part of the f5networks.f5_modules collection (version 1.20.0).

You might already have this collection installed if you are using the ansible package. It is not included in ansible-core. To check whether it is installed, run ansible-galaxy collection list.

To install it, use: ansible-galaxy collection install f5networks.f5\_modules.

To use it in a playbook, specify: f5networks.f5_modules.bigip_profile_tcp.

New in f5networks.f5_modules 1.0.0

Synopsis

  • Manage TCP profiles on a BIG-IP system. There are many TCP profiles, each with their own adjustments to the standard tcp profile. Users of this module should be aware that many of the available options have no module default. Instead, the default is assigned by the BIG-IP system itself which, in most cases, is acceptable.

Parameters

Parameter

Comments

delayed_acks

boolean

When yes, the system sends fewer than one ACK segment per data segment received.

When creating a new profile, if this parameter is not specified, the default is provided by the parent profile.

Choices:

  • false

  • true

early_retransmit

boolean

When yes, the system uses early fast retransmits to reduce the recovery time for connections that are receive-buffer or user-data limited.

When creating a new profile, if this parameter is not specified, the default is provided by the parent profile.

Choices:

  • false

  • true

idle_timeout

string

Specifies the length of time a connection is idle (has no traffic) before the connection is eligible for deletion.

When creating a new profile, if this parameter is not specified, the remote device will choose a default value appropriate for the profile, based on its parent profile.

When a number is specified, indicates the number of seconds the TCP connection can remain idle before the system deletes it.

When 0, or indefinite, specifies the system does not delete TCP connections regardless of how long they remain idle.

initial_congestion_window_size

integer

Specifies the initial congestion window size for connections to this destination. The actual window size is this value multiplied by the MSS for the same connection.

When set to 0, the system uses the values specified in RFC2414.

The valid value range is 0 - 16 inclusive.

When creating a new profile, if this parameter is not specified, the default is provided by the parent profile.

initial_receive_window_size

integer

Specifies the initial receive window size for connections to this destination. The actual window size is this value multiplied by the MSS for the same connection.

When set to 0, the system uses the Slow Start value.

The valid value range is 0 - 16 inclusive.

When creating a new profile, if this parameter is not specified, the default is provided by the parent profile.

ip_tos_to_client

string

Specifies the L3 Type of Service level the system inserts in TCP packets destined for clients.

When pass-through, the IP ToS setting remains unchanged.

When mimic, the system sets the ToS level of outgoing packets to the same ToS level of the most-recently received incoming packet.

When set as a number, the number indicates the IP ToS setting the system inserts in the IP packet header. Valid number range is 0 - 255 inclusive.

When creating a new profile, if this parameter is not specified, the default is provided by the parent profile.

nagle

string

When enabled the system applies Nagle’s algorithm to reduce the number of short segments on the network.

When auto, the use of Nagle’s algorithm is decided based on network conditions.

For interactive protocols such as Telnet, rlogin, or SSH, F5 recommends disabling this setting on high-latency networks, to improve application responsiveness.

When creating a new profile, if this parameter is not specified, the default is provided by the parent profile.

Choices:

  • "auto"

  • "enabled"

  • "disabled"

name

string / required

Specifies the name of the profile.

parent

string

Specifies the profile from which this profile inherits settings.

When creating a new profile, if this parameter is not specified, the default is the system-supplied tcp profile.

partition

string

Device partition to manage resources on.

Default: "Common"

provider

dictionary

added in f5networks.f5_modules 1.0.0

A dict object containing connection details.

auth_provider

string

Configures the auth provider for to obtain authentication tokens from the remote device.

This option is really used when working with BIG-IQ devices.

no_f5_teem

boolean

If yes, TEEM telemetry data is not sent to F5.

You may omit this option by setting the environment variable F5_TELEMETRY_OFF.

Previously used variable F5_TEEM is deprecated as its name was confusing.

Choices:

  • false ← (default)

  • true

password

aliases: pass, pwd

string / required

The password for the user account used to connect to the BIG-IP.

You may omit this option by setting the environment variable F5_PASSWORD.

server

string / required

The BIG-IP host.

You may omit this option by setting the environment variable F5_SERVER.

server_port

integer

The BIG-IP server port.

You may omit this option by setting the environment variable F5_SERVER_PORT.

Default: 443

timeout

integer

Specifies the timeout in seconds for communicating with the network device for either connecting or sending commands. If the timeout is exceeded before the operation is completed, the module will error.

transport

string

Configures the transport connection to use when connecting to the remote device.

Choices:

  • "rest" ← (default)

user

string / required

The username to connect to the BIG-IP with. This user must have administrative privileges on the device.

You may omit this option by setting the environment variable F5_USER.

validate_certs

boolean

If no, SSL certificates are not validated. Use this only on personally controlled sites using self-signed certificates.

You may omit this option by setting the environment variable F5_VALIDATE_CERTS.

Choices:

  • false

  • true ← (default)

proxy_options

boolean

When yes, the system advertises an option, such as a time-stamp, to the server only if it was negotiated with the client.

When creating a new profile, if this parameter is not specified, the default is provided by the parent profile.

Choices:

  • false

  • true

state

string

When present, ensures the profile exists.

When absent, ensures the profile is removed.

Choices:

  • "present" ← (default)

  • "absent"

syn_rto_base

integer

Specifies the initial RTO Retransmission TimeOut base multiplier for SYN retransmission, in milliseconds.

This value is modified by the exponential backoff table to select the interval for subsequent retransmissions.

The valid value range is 0 - 5000 inclusive.

When creating a new profile, if this parameter is not specified, the default is provided by the parent profile.

time_wait_recycle

boolean

Specifies connections in a TIME-WAIT state are reused if a SYN packet (indicating a request for a new connection) is received.

When no, connections in a TIME-WAIT state remain unused for a specified length of time.

When creating a new profile, if this parameter is not specified, the default is provided by the parent profile.

Choices:

  • false

  • true

time_wait_timeout

string

added in f5networks.f5_modules 1.3.0

Specifies the number of milliseconds a connection is in the TIME-WAIT state before closing.

When immediate, the system closes the connection immediately after the connection enters the TIME-WAIT state.

When indefinite or 0, the system does not close TCP connections regardless of how long they remain in the TIME-WAIT state.

The valid number range is from 0 to 600000 milliseconds.

When creating a new profile, if this parameter is not specified, the default is provided by the parent profile.

Notes

Note

  • For more information on using Ansible to manage F5 Networks devices see https://www.ansible.com/integrations/networks/f5.

  • Requires BIG-IP software version >= 12.

  • The F5 modules only manipulate the running configuration of the F5 product. To ensure that BIG-IP specific configuration persists to disk, be sure to include at least one task that uses the f5networks.f5_modules.bigip_config module to save the running configuration. Refer to the module’s documentation for the correct usage of the module to save your running configuration.

Examples

- name: Create a TCP profile
  bigip_profile_tcp:
    name: foo
    parent: f5-tcp-progressive
    time_wait_recycle: no
    idle_timeout: 300
    state: present
    provider:
      user: admin
      password: secret
      server: lb.mydomain.com
  delegate_to: localhost

Return Values

Common return values are documented here, the following are the fields unique to this module:

Key

Description

delayed_acks

boolean

Specifies if the system sends fewer than one ACK segment per data segment received.

Returned: changed

Sample: true

early_retransmit

boolean

Specifies the use of early fast retransmits.

Returned: changed

Sample: true

idle_timeout

integer

The new idle timeout of the resource.

Returned: changed

Sample: 100

initial_congestion_window_size

integer

Specifies the initial congestion window size for connections to this destination.

Returned: changed

Sample: 5

initial_receive_window_size

integer

Specifies the initial receive window size for connections to this destination.

Returned: changed

Sample: 10

ip_tos_to_client

string

Specifies the L3 Type of Service level that the system inserts in TCP packets destined for clients.

Returned: changed

Sample: "mimic"

nagle

string

Specifies the use of Nagle’s algorithm.

Returned: changed

Sample: "auto"

parent

string

The new parent of the resource.

Returned: changed

Sample: "f5-tcp-optimized"

proxy_options

boolean

Specifies if the system advertises negotiated options to the server.

Returned: changed

Sample: false

syn_rto_base

integer

Specifies the initial Retransmission TimeOut base multiplier for SYN retransmission.

Returned: changed

Sample: 2000

time_wait_recycle

boolean

Reuse connections in TIME-WAIT state.

Returned: changed

Sample: true

time_wait_timeout

string

Specifies the number of milliseconds that a connection is in the TIME-WAIT state before closing.

Returned: changed

Sample: "immediate"

Authors

  • Tim Rupp (@caphrim007)

  • Wojciech Wypior (@wojtek0806)