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f5networks.f5_modules.bigip_cgnat_lsn_pool – Manage CGNAT LSN Pools

Note

This plugin is part of the f5networks.f5_modules collection (version 1.13.0).

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_cgnat_lsn_pool.

New in version 1.0.0: of f5networks.f5_modules

Synopsis

• Manage CGNAT LSN (Large Scale NAT) Pools.

Parameters

Parameter	Comments
backup_members list / elements=string	Specifies translation IP addresses available for backup members, which are used by Deterministic translation mode if deterministic mode translation fails and falls back to napt mode. This is a collection of IP prefixes with their prefix lengths.
client_conn_limit integer	Specifies the maximum number of simultaneous translated connections a client or subscriber is allowed to have. Valid range of values is between 0 and 4294967295 inclusive.
description string	User created LSN pool description.
egress_interfaces list / elements=string	Specifies the set of interfaces on which the source address translation is allowed or disallowed, as determined by the egress_intf_enabled setting.
egress_intf_enabled boolean	Specifies how the system handles address translation on the interfaces specified in egress_interfaces. When set to yes, source address translation is allowed only on the specified egress_interfaces. When set to no, source address translation is disabled on the specified egress_interfaces. Choices: no yes
harpin_mode boolean	Enables or disables hairpinning for incoming connections to active translation end-points. Choices: no yes
icmp_echo boolean	Enables or disables ICMP echo on translated addresses. Choices: no yes
inbound_connections string	Controls whether or not the BIG-IP system supports inbound connections for each outbound mapping. When disabled, system does not support inbound connections for outbound mappings, which prevents Port Control Protocol pcp from functioning. When explicit, the system supports inbound connections for explicit outbound mappings. When automatic the system supports inbound connections for every outbound mapping as it gets used. Choices: disabled explicit automatic
log_profile string	Specifies the name of the logging profile the pool uses.
log_publisher string	Specifies the name of the log publisher that logs translation events.
members list / elements=string	Specifies the set of translation IP addresses available in the pool. This is a collection of IP prefixes with their prefix lengths. All public-side addresses come from the addresses in this group of subnets. Members of two or more deterministic LSN pools must not overlap. Every external address used for deterministic mapping must occur only in one LSN pool.
mode string	Specifies the translation address mapping mode. The napt mode provides standard address and port translation allowing multiple clients in a private network to access remote networks using the single IP address assigned to their router. The deterministic address translation mode provides address translation that eliminates the logging of every address mapping, while still allowing internal client address tracking using only an external address and port, and a destination address and port. The pba mode logs the allocation and release of port blocks for subscriber translation requests, instead of separately logging each translation request. Choices: napt deterministic pba
name string / required	Specifies the name of the LSN pool to manage.
partition string	Device partition on which to manage resources. Default: “Common”
pba_block_idle_timeout integer	Specifies the timeout duration subsequent to the point when the port block becomes idle. Valid range of values is between 0 and 4294967295 inclusive.”
pba_block_lifetime integer	Specifies the timeout for the port block, after which the block is not used for new port allocations. Valid range of values is between 0 and 4294967295 inclusive. The value of 0 corresponds to an infinite timeout.
pba_block_size integer	Specifies the number of ports in a block. Valid range of values is between 0 and 65535 inclusive. The pba_block_size value should be less than or equal to the LSN pool range, i.e the range of ports defined by port_range_low and port_range_high values.
pba_client_block_limit integer	Specifies the number of blocks that can be assigned to a single subscriber IP address.
pba_zombie_timeout integer	Specifies the timeout duration for a zombie port block, which is a timed out port block with one or more active connections. When the timeout duration expires, connections using the zombie block are killed and the zombie port block becomes an available port block. The value of 0 corresponds to an infinite timeout. System ignores this parameter value if pba_block_lifetime is 0.
persistence_mode string	Specifies the persistence settings for LSN translation entries. When address, the translation attempts to reuse the address mapping, but not the port mapping. When address-port, the translation attempts to reuse both the address and port mapping for subsequent packets sent from the same internal IP address and port. When none, peristence is disabled. Choices: address address-port none
persistence_timeout integer	Specifies the persistence timeout value for LSN translation entries. If a particular mapping is unused for this length of time, the mapping expires and the public-side address/port pair is free for use in other mappings. Valid range of values is between 0 and 31536000 inclusive.
port_range_high integer	Specifies the high end of the range of port numbers available for use with translation IP addresses. The port_range_high must always be higher or equal to port_range_high value. Valid range of values is between 0 and 65535 inclusive.
port_range_low integer	Specifies the low end of the range of port numbers available for use with translation IP addresses. The port_range_low must always be lower or equal to port_range_high value. Valid range of values is between 0 and 65535 inclusive.
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	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: no ← (default) yes
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: no yes ← (default)
route_advertisement boolean	Specifies whether the translation addresses are passed to the Advanced Routing Module for advertisement through dynamic routing protocols. Choices: no yes
state string	When state is present, ensures the LSN pool exists. When state is absent, ensures the LSN pool is removed. Choices: present ← (default) absent

Notes

Note

• Requires CGNAT is licensed and enabled on BIG-IP.

• 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 an lsn pool
  bigip_cgnat_lsn_pool:
    name: foo
    mode: napt
    client_conn_limit: 100
    log_profile: foo_profile
    log_publisher: foo_publisher
    members:
      - 10.1.1.0/24
    provider:
      password: secret
      server: lb.mydomain.com
      user: admin
  delegate_to: localhost

- name: Update lsn pool
  bigip_cgnat_lsn_pool:
    name: foo
    mode: pba
    pba_block_size: 128
    pba_block_lifetime: 7200
    pba_block_idle_timeout: 1800
    pba_zombie_timeout: 900
    log_profile: foo_profile
    log_publisher: foo_publisher
    provider:
      password: secret
      server: lb.mydomain.com
      user: admin
  delegate_to: localhost

- name: Remove lsn pool
  bigip_cgnat_lsn_pool:
    name: foo
    state: absent
    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	Description
backup_members list / elements=string	The translation IP addresses available for backup members. Returned: changed Sample: [“/Common/10.10.10.0/24”, “/Common/11.11.11.0/25”]
client_conn_limit integer	The maximum number of simultaneous translated connections a client or subscriber is allowed to have. Returned: changed Sample: 50
description string	User created LSN pool description. Returned: changed Sample: “some description”
egress_interfaces list / elements=string	The set of interfaces on which source address translation is allowed or disallowed. Returned: changed Sample: [“/Common/tunnel1”, “/Common/tunnel2”]
egress_intf_enabled boolean	Specifies how the system handles address translation on the egress interfaces. Returned: changed Sample: false
harpin_mode boolean	Enables or disables hairpinning for incoming connections to active translation end-points. Returned: changed Sample: true
icmp_echo boolean	Enables or disables ICMP echo on translated addresses. Returned: changed Sample: false
inbound_connections string	Controls BIG-IP system support of inbound connections for each outbound mapping. Returned: changed Sample: “explicit”
log_profile string	The name of the logging profile the pool uses. Returned: changed Sample: “/Common/foo_log_profile”
log_publisher list / elements=string	The name of the log publisher that logs translation events. Returned: changed Sample: “/Common/publisher_1”
members list / elements=string	The set of translation IP addresses available in the pool. Returned: changed Sample: [“/Common/10.10.10.0/24”, “/Common/11.11.11.0/25”]
mode string	Specifies the translation address mapping mode. Returned: changed Sample: “napt”
pba_block_idle_timeout integer	The timeout duration subsequent to the point when the port block becomes idle. Returned: changed Sample: 3600
pba_block_lifetime integer	The timeout for the port block. Returned: changed Sample: 7200
pba_block_size integer	The number of ports in a block. Returned: changed Sample: 128
pba_client_block_limit integer	The number of blocks that can be assigned to a single subscriber IP address. Returned: changed Sample: 3
pba_zombie_timeout integer	The timeout duration for a zombie port block. Returned: changed Sample: 180
persistence_mode string	Specifies the persistence settings for LSN translation entries. Returned: changed Sample: “address”
persistence_timeout integer	Specifies the persistence timeout value for LSN translation entries. Returned: changed Sample: 500
port_range_high integer	The high end of the range of port numbers available for use with translation IP addresses. Returned: changed Sample: 65535
port_range_low integer	The low end of the range of port numbers available for use with translation IP addresses. Returned: changed Sample: 1025
route_advertisement boolean	Specifies whether the translation addresses are advertised through dynamic routing protocols. Returned: changed Sample: true

Authors

• Wojciech Wypior (@wojtek0806)