f5networks.f5_modules.bigip_profile_fastl4 – Manages Fast L4 profiles

Note

This plugin is part of the f5networks.f5_modules collection (version 1.9.0).

To install it use: ansible-galaxy collection install f5networks.f5_modules.

To use it in a playbook, specify: f5networks.f5_modules.bigip_profile_fastl4.

New in version 1.0.0: of f5networks.f5_modules

Synopsis

  • Manages Fast L4 profiles. Using the FastL4 profile can increase virtual server performance and throughput for supported platforms by using the embedded Packet Velocity Acceleration (ePVA) chip to accelerate traffic.

Parameters

Parameter Choices/Defaults Comments
client_timeout
string
Specifies a timeout for Late Binding.
This is the time limit for the client to provide the application data required to select a back-end server, meaning the maximum time the BIG-IP system waits for information about the sender and the target.
This information typically arrives at the beginning of the FIX logon packet.
When 0, or immediate, allows for no time beyond the moment of the first packet transmission.
When indefinite, disables the limit. This allows the client unlimited time to send the sender and target information.
description
string
Description of the profile.
explicit_flow_migration
boolean
    Choices:
  • no
  • yes
Specifies whether a qualified late-binding connection requires an explicit iRule command to migrate down to ePVA hardware.
When no, a late-binding connection migrates down to ePVA immediately after establishing the server-side connection.
When yes, this parameter stops automatic migration to ePVA, and requires the iRule explicitly trigger ePVA processing by invoking the release_flow iRule command. This allows an iRule author to control when the connection uses the ePVA hardware.
hardware_syn_cookie
boolean
    Choices:
  • no
  • yes
Enables or disables hardware SYN cookie support when PVA10 is present on the system.
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 indefinite, specifies the system does not delete TCP connections regardless of how long they remain idle.
When 0, or immediate, specifies the system deletes connections immediately when they become idle.
ip_df_mode
string
    Choices:
  • pmtu
  • preserve
  • set
  • clear
Specifies the Don't Fragment (DF) bit setting in the IP Header of the outgoing TCP packet.
When pmtu, sets the outgoing IP Header DF bit based on IP pmtu setting.
When preserve, sets the outgoing Packet's IP Header DF bit to be same as incoming IP Header DF bit.
When set, sets the outgoing packet's IP Header DF bit.
When clear, clears the outgoing packet's IP Header DF bit.
ip_tos_to_client
string
For IP traffic passing through the system to clients, specifies whether the system modifies the IP type-of-service (ToS) setting in an IP packet header.
May be a number between 0 and 255 (inclusive). When a number, specifies the IP ToS setting that the system inserts in the IP packet header.
When pass-through, specifies the IP ToS setting remains unchanged.
When mimic, specifies the system sets the ToS level of outgoing packets to the same ToS level of the most-recently received incoming packet.
ip_tos_to_server
string
For IP traffic passing through the system to back-end servers, specifies whether the system modifies the IP type-of-service (ToS) setting in an IP packet header.
May be a number between 0 and 255 (inclusive). When a number, specifies the IP ToS setting that the system inserts in the IP packet header.
When pass-through, specifies that IP ToS setting remains unchanged.
When mimic, specifies the system sets the ToS level of outgoing packets to the same ToS level of the most-recently received incoming packet.
ip_ttl_mode
string
    Choices:
  • proxy
  • preserve
  • decrement
  • set
Specifies the outgoing TCP packet's IP Header TTL mode.
When proxy, sets the outgoing IP Header TTL value to 255/64 for IPv4/IPv6 respectively.
When preserve, sets the outgoing IP Header TTL value to be same as the incoming IP Header TTL value.
When decrement, sets the outgoing IP Header TTL value to be one less than the incoming TTL value.
When set, sets the outgoing IP Header TTL value to a specific value(as specified by ip_ttl_v4 or ip_ttl_v6.
ip_ttl_v4
integer
Specifies the outgoing packet's IP Header TTL value for IPv4 traffic.
The maximum TTL value is 255.
ip_ttl_v6
integer
Specifies the outgoing packet's IP Header TTL value for IPv6 traffic.
The maximum TTL value is 255.
keep_alive_interval
integer
Specifies the keep-alive probe interval, in seconds.
late_binding
boolean
    Choices:
  • no
  • yes
Enables intelligent selection of a back-end server or pool, using an iRule to make the selection.
Enabling late_binding on BIG-IP running TMOS 12.x branch requires software syn cookie is enabled.
link_qos_to_client
string
For IP traffic passing through the system to clients, specifies whether the system modifies the link quality-of-service (QoS) setting in an IP packet header.
The link QoS value prioritizes the IP packet relative to other Layer 2 traffic.
You can specify a number between 0 (lowest priority) and 7 (highest priority).
When a number, specifies the link QoS setting that the system inserts in the IP packet header.
When pass-through, specifies the link QoS setting remains unchanged.
link_qos_to_server
string
For IP traffic passing through the system to back-end servers, specifies whether the system modifies the link quality-of-service (QoS) setting in an IP packet header.
The link QoS value prioritizes the IP packet relative to other Layer 2 traffic.
You can specify a number between 0 (lowest priority) and 7 (highest priority).
When a number, specifies the link QoS setting that the system inserts in the IP packet header.
When pass-through, specifies the link QoS setting remains unchanged.
loose_close
boolean
    Choices:
  • no
  • yes
When yes, specifies the system closes a loosely-initiated connection when the system receives the first FIN packet from either the client or the server.
loose_initialization
boolean
    Choices:
  • no
  • yes
When yes, specifies the system initializes a connection when it receives any TCP packet, rather than requiring a SYN packet for connection initiation.
mss_override
integer
Specifies a maximum segment size (MSS) override for server-side connections.
Valid range is 256 to 9162 or 0 to disable.
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 fastL4 profile.
partition
string
Default:
"Common"
Device partition to manage resources on.
provider
dictionary
added in 1.0.0 of f5networks.f5_modules
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
    Choices:
  • no
  • yes
If yes, TEEM telemetry data is not sent to F5.
You may omit this option by setting the environment variable F5_TEEM.
password
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.

aliases: pass, pwd
server
string / required
The BIG-IP host.
You may omit this option by setting the environment variable F5_SERVER.
server_port
integer
Default:
443
The BIG-IP server port.
You may omit this option by setting the environment variable F5_SERVER_PORT.
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
    Choices:
  • rest ←
Configures the transport connection to use when connecting to the remote device.
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
    Choices:
  • no
  • yes ←
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.
pva_acceleration
string
added in 1.3.0 of f5networks.f5_modules
    Choices:
  • full
  • dedicated
  • partial
  • none
Specifies the Packet Velocity ASIC acceleration policy.
reassemble_fragments
boolean
    Choices:
  • no
  • yes
When yes, specifies the system reassembles IP fragments.
receive_window_size
integer
Specifies the amount of data the BIG-IP system can accept without acknowledging the server.
reset_on_timeout
boolean
    Choices:
  • no
  • yes
When yes, specifies the system sends a reset packet (RST) in addition to deleting the connection, when a connection exceeds the idle timeout value.
rtt_from_client
boolean
    Choices:
  • no
  • yes
When yes, specifies the system uses TCP timestamp options to measure the round-trip time to the client.
rtt_from_server
boolean
    Choices:
  • no
  • yes
When yes, specifies the system uses TCP timestamp options to measure the round-trip time to the server.
server_sack
boolean
    Choices:
  • no
  • yes
Specifies whether the BIG-IP system processes Selective ACK (Sack) packets in cookie responses from the server.
server_timestamp
boolean
    Choices:
  • no
  • yes
Specifies whether the BIG-IP system processes timestamp request packets in cookie responses from the server.
state
string
    Choices:
  • present ←
  • absent
When present, ensures the profile exists.
When absent, ensures the profile is removed.
syn_cookie_mss
integer
Specifies a value that overrides the SYN cookie maximum segment size (MSS) value in the SYN-ACK packet that is returned to the client.
Valid values are 0, and values from 256 through 9162.
Parameter only available on TMOS 13.0.0 and higher.
tcp_close_timeout
string
Specifies the length of time a connection can remain idle before deletion.
tcp_generate_isn
boolean
    Choices:
  • no
  • yes
When yes, specifies the system generates initial sequence numbers for SYN packets, according to RFC 1948.
tcp_handshake_timeout
string
Specifies the acceptable duration for a TCP handshake (the maximum idle time between a client synchronization (SYN) and a client acknowledgment (ACK)). If the TCP handshake takes longer than the timeout, the system automatically closes the connection.
When a number, specifies how long the system can try to establish a TCP handshake before timing out.
When disabled, specifies the system does not apply a timeout to a TCP handshake.
When indefinite, specifies attempting a TCP handshake never times out.
tcp_strip_sack
boolean
    Choices:
  • no
  • yes
When yes, specifies the system blocks a TCP selective ACK SackOK option from passing to the server on an initiating SYN.
tcp_time_wait_timeout
integer
Specifies the number of milliseconds a connection is in the TIME-WAIT state before closing.
This parameter is only available on TMOS 13.0.0 and later.
tcp_timestamp_mode
string
    Choices:
  • preserve
  • rewrite
  • strip
Specifies the action the system should take on TCP timestamps.
tcp_wscale_mode
string
    Choices:
  • preserve
  • rewrite
  • strip
Specifies the action the system should take on TCP windows.
timeout_recovery
string
    Choices:
  • disconnect
  • fallback
Specifies how to handle client-timeout errors for Late Binding.
Timeout errors may be caused by a DoS attack or a lossy connection.
When disconnect, causes the BIG-IP system to drop the connection.
When fallback, reverts the connection to normal FastL4 load-balancing, based on the client's TCP header. This causes the BIG-IP system to choose a back-end server based only on the source address and port.

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 fastL4 profile
  bigip_profile_fastl4:
    name: foo
    provider:
      password: secret
      server: lb.mydomain.com
      user: admin
  delegate_to: localhost

Return Values

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

Key Returned Description
client_timeout
string
changed
The new client timeout value of the resource.

Sample:
True
description
string
changed
The new description.

Sample:
My description
explicit_flow_migration
boolean
changed
The new flow migration setting.

Sample:
True
hardware_syn_cookie
boolean
changed
Enables or disables hardware SYN cookie support when PVA10 is present on the system.
idle_timeout
string
changed
The new idle timeout setting.

Sample:
123
ip_df_mode
string
changed
The new Don't Fragment Flag (DF) setting.

Sample:
clear
ip_tos_to_client
string
changed
The new IP ToS to Client setting.

Sample:
100
ip_tos_to_server
string
changed
The new IP ToS to Server setting.

Sample:
100
ip_ttl_mode
string
changed
The new Time To Live (TTL) setting.

Sample:
proxy
ip_ttl_v4
integer
changed
The new Time To Live (TTL) v4 setting.

Sample:
200
ip_ttl_v6
integer
changed
The new Time To Live (TTL) v6 setting.

Sample:
200
keep_alive_interval
integer
changed
The new TCP Keep Alive Interval setting.

Sample:
100
late_binding
boolean
changed
The new Late Binding setting.

Sample:
True
link_qos_to_client
string
changed
The new Link QoS to Client setting.

Sample:
pass-through
link_qos_to_server
string
changed
The new Link QoS to Server setting.

Sample:
123
loose_close
boolean
changed
The new Loose Close setting.
loose_initialization
boolean
changed
The new Loose Initiation setting.
mss_override
integer
changed
The new Maximum Segment Size Override setting.

Sample:
300
pva_acceleration
string
changed
Specifies the Packet Velocity ASIC acceleration policy.

Sample:
full
reassemble_fragments
boolean
changed
The new Reassemble IP Fragments setting.

Sample:
True
receive_window_size
integer
changed
The new Receive Window setting.

Sample:
1024
reset_on_timeout
boolean
changed
The new Reset on Timeout setting.
rtt_from_client
boolean
changed
The new RTT from Client setting.
rtt_from_server
boolean
changed
The new RTT from Server setting.
server_sack
boolean
changed
The new Server Sack setting.

Sample:
True
server_timestamp
boolean
changed
The new Server Timestamp setting.

Sample:
True
syn_cookie_mss
integer
changed
The new SYN Cookie MSS setting.

Sample:
1024
tcp_close_timeout
string
changed
The new TCP Close Timeout setting.

Sample:
100
tcp_generate_isn
boolean
changed
The new Generate Initial Sequence Number setting.
tcp_handshake_timeout
integer
changed
The new TCP Handshake Timeout setting.

Sample:
5
tcp_strip_sack
boolean
changed
The new Strip Sack OK setting.
tcp_time_wait_timeout
integer
changed
The new TCP Time Wait Timeout setting.

Sample:
100
tcp_timestamp_mode
string
changed
The new TCP Timestamp Mode setting.

Sample:
rewrite
tcp_wscale_mode
string
changed
The new TCP Window Scale Mode setting.

Sample:
strip
timeout_recovery
string
changed
The new Timeout Recovery setting.

Sample:
fallback


Authors

  • Tim Rupp (@caphrim007)

  • Wojciech Wypior (@wojtek0806)