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BFD role

This role facilitates the configuration of bidirectional forwarding detection (BFD) global attributes. It specifically enables configuration of BFD interval, min_rx, multiplier, and role. This role is abstracted for Dell EMC PowerSwitch platforms running Dell EMC SmartFabric OS10.

The BFD 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 as the value
  • If os10_cfg_generate is 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_bfd keys

Key Type Description Support
bfd dictionary Configures global BFD parameters (see bfd.*) os10
bfd.interval integer Configures the time interval in ms (100 to 1000) os10
bfd.min_rx integer Configures maximum waiting time for receiving control packets from BFD peers in ms (100 to 1000) os10
bfd.multiplier integer Configures the maximum number of consecutive packets that are not received from BFD peers before session state changes to Down (3 to 50) os10
bfd.role string: passive,active* Configures the BFD role os10
bfd.state string: absent,present* Removes the global BFD 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_bfd role to completely set the global BFD attributes. 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. The bfd role writes a simple playbook that only references the os10_bfd role. By including the role, you automatically get access to all of the tasks to configure BFD feature.

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/os10
  
os10_bfd:
  bfd:
    interval: 100
    min_rx: 100
    multiplier: 3
    role: "active"
    state: "present"

Simple playbook to setup bfd — leaf.yaml

- hosts: leaf1
  roles:
     - dellemc.os10.os10_bfd

Run

ansible-playbook -i hosts leaf.yaml

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