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Prefix-list role

This role facilitates the configuration of a prefix-list. It supports the configuration of an IP prefix-list, and assigns the prefix-list to line terminals. This role is abstracted for Dell EMC PowerSwitch platforms running Dell EMC SmartFabric OS10.

The prefix-list role requires an SSH connection for connectivity to a Dell EMC SmartFabric OS10 device. You can use any of the built-in OS connection variables.

Role variables

  • Role is abstracted using the ansible_network_os variable that can take dellemc.os10.os10 value
  • If os10_cfg_generate set to true, the variable generates the role configuration commands in a file
  • Any role variable with a corresponding state variable set to absent negates the configuration of that variable
  • Setting an empty value for any variable negates the corresponding configuration
  • Variables and values are case-sensitive

os10_prefix_list keys

Key Type Description Support
type string (required): ipv4,ipv6 Configures an L3 (IPv4/IPv6) prefix-list os10
name string (required) Configures the prefix-list name os10
description string Configures the prefix-list description os10
entries list Configures rules in the prefix-list (see seqlist.*) os10
entries.number int (required) Specifies the sequence number of the prefix-list rule os10
entries.permit boolean (required): true,false Specifies the rule to permit packets if set to true, and specifies to reject packets if set to false os10
entries.net_num string (required) Specifies the network number os10
entries.mask string (required) Specifies the mask os10
entries.condition_list list Configures conditions to filter packets (see condition_list.*) os10
condition_list.condition list Specifies the condition to filter packets from the source address os10
condition_list.prelen string (required) Specifies the allowed prefix length os10
entries.state string: absent,present* Deletes the rule from the prefix-list if set to absent os10
state string: absent,present* Deletes the prefix-list if set to absent os10

NOTE: Asterisk (*) denotes the default value if none is specified.

Connection variables

Ansible Dell EMC network roles require connection information to establish communication with the nodes in your inventory. This information can exist in the Ansible group_vars or host_vars directories, or inventory or in the playbook itself.

Key Required Choices Description
ansible_host yes Specifies the hostname or address for connecting to the remote device over the specified transport
ansible_port no Specifies the port used to build the connection to the remote device; if value is unspecified, the ANSIBLE_REMOTE_PORT option is used; it defaults to 22
ansible_ssh_user no Specifies the username that authenticates the CLI login for the connection to the remote device; if value is unspecified, the ANSIBLE_REMOTE_USER environment variable value is used
ansible_ssh_pass no Specifies the password that authenticates the connection to the remote device
ansible_become no yes, no* Instructs the module to enter privileged mode on the remote device before sending any commands; if value is unspecified, the ANSIBLE_BECOME environment variable value is used, and the device attempts to execute all commands in non-privileged mode
ansible_become_method no enable, sudo* Instructs the module to allow the become method to be specified for handling privilege escalation; if value is unspecified, the ANSIBLE_BECOME_METHOD environment variable value is used
ansible_become_pass no Specifies the password to use if required to enter privileged mode on the remote device; if ansible_become is set to no this key is not applicable
ansible_network_os yes os10, null* Loads the correct terminal and cliconf plugins to communicate with the remote device

NOTE: Asterisk (*) denotes the default value if none is specified.

Example playbook

This example uses the os10_prefix_list role to configure prefix-list for both IPv4 and IPv6. It creates a hosts file with the switch details and corresponding variables. The hosts file should define the ansible_network_os variable with corresponding Dell EMC OS10 name.

When os10_cfg_generate is set to true, the variable generates the configuration commands as a .part file in build_dir path. By default, the variable is set to false. It writes a simple playbook that only references the os10_prefix_list role.

Sample hosts file

leaf1 ansible_host= <ip_address>

Sample host_vars/leaf1

hostname: leaf1
ansible_become: yes
ansible_become_method: xxxxx
ansible_become_pass: xxxxx
ansible_ssh_user: xxxxx
ansible_ssh_pass: xxxxx
ansible_network_os: dellemc.os10.os10
build_dir: ../temp/temp_os10
os10_prefix_list:
   - name: testpl
     type: ipv4
     description: pl
     entries:
       - number: 19
         permit: true
         net_num: 20.0.0.0
         mask: 16
         condition_list:
           - condition: ge
             prelen: 17
           - condition: le
             prelen: 18
         state: present
     state: present

Simple playbook to setup system — leaf.yaml

- hosts: leaf1
  roles:
     - dellemc.os10.os10_prefix_list

Run

ansible-playbook -i hosts leaf.yaml

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