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System role

This role facilitates the configuration of global system attributes. It specifically enables configuration of hostname and hashing algorithm. This role is abstracted for Dell EMC PowerSwitch platforms running Dell EMC SmartFabric OS10.

The System 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_system keys

Key Type Description Support
hostname string Configures a hostname to the device (no negate command) os10
hardware_forwarding string: scaled-l2,scaled-l3-routes,scaled-l3-hosts Configures hardware forwarding mode os10
hash_algo dictionary Configures hash algorithm commands (see hash_algo.*) os10
hash_algo.algo list Configures hashing algorithm (see algo.*) os10
algo.name string (required) Configures the name of the hashing algorithm os10
algo.mode string (required) Configures the hashing algorithm mode os10
algo.state string: absent,present* Deletes the hashing algorithm if set to absent os10
load_balance dictionary Configures the global traffic load balance (see load_balance.*) os10
load_balance.ingress_port boolean: true,false Specifies whether to use the source port ID for the hashing algorithm os10
load_balance.ip_selection list Configures IPv4 key fields to use in hashing algorithm; os10
ip_selection.field string Configures IPv4 key fields to use in hashing algorithm os10
ip_selection.state string: absent,present* Deletes the IPv4 key fields if set to absent os10
load_balance.ipv6_selection list Configures IPv6 key fields to use in hashing algorithm os10
ipv6_selection.field string Configures IPv6 key fields to use in hashing algorithm os10
ipv6_selection.state string: absent,present* Deletes the IPv6 key fields if set to absent os10
load_balance.mac_selection list Configures MAC key fields to use in hashing algorithm (see mac_selection.*) os10
mac_selection.field string Configures MAC key fields to use in hashing algorithm os10
mac_selection.state string: absent,present* Deletes the MAC key fields if set to absent os10
load_balance.tcp_udp_selection list Configures TCP UDP ports for load balancing configurations (see tcp_udp_selection.*) os10
tcp_udp_selection.field string Configures TCP UDP port fields to use in hashing algorithm os10
tcp_udp_selection.state string: absent,present* Deletes the TCP UDP ports if set to absent os10
min_ra string Configures global RA minimum interval value, applicable to all interfaces across VRFs os10
max_ra string Configures global RA maximum interval value, applicable to all interfaces across VRFs 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_system role to completely set the hostname, hash alogrithm and load balancing. 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 system role writes a simple playbook that only references the os10_system role. By including the role, you automatically get access to all of the tasks to configure system features.

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_system:
    hostname: os10
    hardware_forwarding: scaled-l3-hosts
    hash_algo:
      algo:
        - name: lag
          mode: crc
          state: present
        - name: ecmp
          mode: xor
          state: present
    load_balance:
        ingress_port: true
        ip_selection:
          - field: source-ip
            state: present
        ipv6_selection:
          - field: source-ip
            state: present
        mac_selection:
          - field: source-mac
            state: present
        tcp_udp_selection:
          - field: l4-source-port
            state: present
    max_ra: 15
    min_ra: 10

Simple playbook to setup system — leaf.yaml

- hosts: leaf1
  roles:
     - dellemc.os10.os10_system

Run

ansible-playbook -i hosts leaf.yaml

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