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VLT role

This role facilitates the configuration of the basics of virtual link trunking (VLT) to provide a loop-free topology. This role is abstracted for Dell EMC PowerSwitch platforms running Dell EMC SmartFabric OS10.

The VLT 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 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_vlt keys

Key Type Description Support
domain integer (required) Configures the VLT domain identification number (1 to 1000) os10
backup_destination string Configures an IPv4 address for the VLT backup link (A.B.C.D format or X:X:X:X::X format) os10
destination_type string Configures the backup destination based on this destination type (IPv4 or IPv6) os10
backup_destination_vrf string Configures the virtual routing and forwarding (VRF) instance through which the backup destination IP is reachable (vrfname must be present) os10
discovery_intf string Configures the discovery interface for the VLT domain (range of interfaces) os10
discovery_intf_state string: absent,present Deletes the discovery interfaces for the VLT domain if set to absent os10
peer_routing boolean Configures VLT peer routing os10
priority integer (default:32768) Configures VLT priority os10
vlt_mac string Configures the VLT MAC address os10
vlt_peers dictionary Contains objects to configure the VLT peer port-channel (see vlt_peers.*) os10
vlt_peers.<portchannelid> dictionary Configures the VLT peer port-channel (Po <portchannelid> value) os10
vlt_peers.<portchannelid>.peer_lag integer Configures the port-channel ID of the VLT peer lag os10
state string: absent,present Deletes the VLT instance if set to absent os10

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

Connection variables

Ansible Dell EMC network OS 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.

Dependencies

The os10_vlt role is built on modules included in the core Ansible code. These modules were added in ansible version 2.2.0.

Example playbook

This example uses the os10_vlt role to setup a VLT-domain. 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_vlt 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_vlt:
    domain: 1
    backup_destination: "192.168.211.175"
    destination_type: "ipv4"
    backup_destination_vrf:
    discovery_intf: 1/1/12
    discovery_intf_state: present
    peer_routing: True
    vlt_mac: aa:aa:aa:aa:aa:aa
    vlt_peers:
      Po 12:
       peer_lag: 13
    state: present

NOTE: Discovery interface must not be in switchport mode and can be configured using the os10_interface role.

Simple playbook to setup system — leaf.yaml

- hosts: leaf1
  roles:
     - dellemc.os10.os10_vlt

Run

ansible-playbook -i hosts leaf.yaml

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