dellemc.os9/roles/os9_dcb

DCB role

This role facilitates the configuration of data center bridging (DCB). It supports the configuration of the DCB map and the DCB buffer, and assigns them to interfaces. This role is abstracted for Dell EMC PowerSwitch platforms running Dell EMC OS9.

The DCB role requires an SSH connection for connectivity to a Dell EMC OS9 device. You can use any of the built-in OS connection variables.

Role variables

• Role is abstracted using the ansible_network_os variable and can take the dellemc.os9.os9 as the value
• If os9_cfg_generate is set to true, 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

os9_dcb keys

Key	Type	Description	Support
dcb_enable	boolean: true,false	Enables/disables DCB	os9
dcb_map	list	Configures the DCB map (see dcb_map.*)	os9
dcb_map.name	string (required)	Configures the DCB map name	os9
dcb_map.priority_group	list	Configures the priority-group for the DCB map (see priority_group.*)	os9
priority_group.pgid	integer (required): 0-7	Configures the priority-group ID	os9
priority_group.bandwidth	integer (required)	Configures the bandwidth percentage for the priority-group	os9
priority_group.pfc	boolean: true,false (required)	Configures PFC on/off for the priorities in the priority-group	os9
priority_group.state	string: absent,present*	Deletes the priority-group of the DCB map if set to absent	os9
dcb_map.priority_pgid	string (required)	Configures priority to priority-group mapping; value is the PGID of priority groups separated by a space (1 1 2 2 3 3 3 4)	os9
dcb_map.intf	list	Configures the DCB map to the interface (see intf.*)	os9
intf.name	string (required)	Configures the DCB map to the interface with this interface name	os9
intf.state	string: absent,present*	Deletes the DCB map from the interface if set to absent	os9
dcb_map.state	string: absent,present*	Deletes the DCB map if set to absent	os9
dcb_buffer	list	Configures the DCB buffer profile (see dcb_buffer.*)	os9
dcb_buffer.name	string (required)	Configures the DCB buffer profile name	os9
dcb_buffer.description	string (required)	Configures a description about the DCB buffer profile	os9
dcb_buffer.priority_params	list	Configures priority flow-control buffer parameters (see priority_params.*)	os9
priority_params.pgid	integer (required): 0-7	Specifies the priority-group ID	os9
priority_params.buffer_size	int (required)	Configures the ingress buffer size (in KB) of the DCB buffer profile	os9
priority_params.pause	integer	Configures the buffer limit (in KB) for pausing	os9
priority_params.resume	integer	Configures buffer offset limit (in KB) for resume	os9
priority_params.state	string: absent,present*	Deletes the priority flow parameters of the DCB buffer if set to absent	os9
dcb_buffer.intf	list	Configures the DCB buffer to the interface (see intf.*)	os9
intf.name	string (required)	Configures the DCB buffer to the interface with this interface name	os9
intf.state	string: absent,present*	Deletes the DCB buffer from the interface if set to absent	os9
dcb_buffer.state	string: absent,present*	Deletes the DCB buffer profile if set to absent	os9

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	os9, 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 os9_dcb role to completely configure DCB map and DCB buffer profiles and assigns it to interfaces. The example 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 OS9 name.

When os9_cfg_generate is set to true, the variable generates the configuration commands as a .part file in build_dir path. By default it is set to false. It writes a simple playbook that only references the os9_dcb 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.os9.os9
build_dir: ../temp/os9
os9_dcb:
    dcb_map:
      - name:  test
        priority_pgid: 0 0 0 3 3 3 3 0 
        priority_group:
          - pgid: 0
            bandwidth: 20
            pfc: true
            state: present
          - pgid: 3
            bandwidth: 80
            pfc: true
            state: present
        intf:
          - name: fortyGigE 1/8
            state: present
          - name: fortyGigE 1/9
            state: present
    state: present
    dcb_buffer:
      - name: buffer
        description:
        priority_params:
          - pgid: 0
            buffer_size: 5550
            pause: 40
            resume: 40
            state: present
        intf:
          - name: fortyGigE 1/8
            state: present
    state: present

Simple playbook to setup system — leaf.yaml

- hosts: leaf1
  roles:
     - dellemc.os9.os9

Run

ansible-playbook -i hosts leaf.yaml

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