The MD-CLI tree structure

The MD-CLI tree contains the following elements from the Nokia YANG models:

• container — an element that contains other elements. In the following example, tcp-keepalive and gnmi are containers.

  tcp-keepalive {
      admin-state disable
      idle-time 600
      interval 15
      retries 4
  }
  gnmi {
      admin-state enable
      auto-config-save false
  }
  

• list — a sequence of list entries. In the preceding example, the entire set of interfaces is a list.

          group "group-1" {
              connect-retry 600
              keepalive 33
          }
          group "group-2" {
              description "Text description for group-2"
              local-preference 8
          }
  

• list entry — an element similar to a container with multiple instances where each list entry is identified by the values of its keys (for example, group ‟group-2”)

  router "Base" {
      bgp {
          group "group-1" {
              connect-retry 600
              keepalive 33
          }
          group "group-2" {
              description "Text description for group-2"
              local-preference 8
          }
      }
  }
  

• key — a unique identifier for a list entry (for example, ‟group-1” and ‟group-2”)

  router "Base" {
      bgp {
          group "group-1" {
              connect-retry 600
              keepalive 33
          }
          group "group-2" {
              description "Text description for group-2"
              local-preference 8
          }
      }
  }
  

• leaf — an element that does not contain any other elements and has a data type (for example, string or integer). A leaf can also be defined with no data type where the leaf takes no parameter value (that is, an empty leaf).

  tcp-keepalive {
      admin-state disable
      idle-time 600
      interval 15
      retries 4
  }
  gnmi {
      admin-state enable
      auto-config-save false
  }
  

• leaf-list — an element that contains a sequence of values of a particular data type (for example, ‟policy” is a leaf-list in the following example)

      policy ["policy-a" "policy-b" "policy-c"]
  

• leaf-list entry — one of the values of a leaf-list. For example, ‟policy-a”, ‟policy-b”, and ‟policy-c” are leaf-list entries in the following example.

      policy ["policy-a" "policy-b" "policy-c"]
  

The following terms are also used:

• keyword — an element with a name defined by SR OS; for example, enumerated values, leaf names, and container names)

• variable parameter — an element with a name defined by the user; for example, descriptions, names, integer or string leaf values)

• immutable element — an element that can only be configured in the transaction in which the parent element is created. It cannot be modified while the parent element exists.

• choice element — an element which is part of a set of mutually exclusive elements. Setting a choice element clears all configuration from the other choice elements.

In the following example, admin-state (leaf name), enable (enumerated value), and connect-retry (leaf name) are keywords, and ‟800” is a variable parameter.

*(ex)[/configure router "Base" bgp]
A:admin@node-2# info
    admin-state enable
    connect-retry 800

Managing the router configuration using the MD-CLI involves accessing and configuring the appropriate elements (containers, lists, leafs, and leaf-lists).

The MD-CLI tree shows the commands and parameters (also known as elements) that are available in a hierarchical output. In the following tree detail command output, the bold elements are containers (or container lists) which contain leafs (or leaf-lists).

*[ex:/configure system]
A:admin@node-2# tree detail
+-- alarms
|   +-- admin-state <keyword>
|   +-- apply-groups <reference>
|   +-- apply-groups-exclude <reference>
|   +-- max-cleared <number>
+-- allow-boot-license-violations <boolean>
+-- apply-groups <reference>
+-- apply-groups-exclude <reference>
+-- boot-bad-exec <string>
+-- boot-good-exec <string>
+-- central-frequency-clock
|   +-- apply-groups <reference>
|   +-- apply-groups-exclude <reference>
|   +-- bits
|   |   +-- input
|   |   |   +-- admin-state <keyword>
|   |   +-- interface-type <keyword>
|   |   +-- output
|   |   |   +-- admin-state <keyword>
|   |   |   +-- line-length <keyword>
|   |   |   +-- ql-minimum <keyword>
|   |   |   +-- source <keyword>
|   |   |   +-- squelch <boolean>
|   |   +-- ql-override <keyword>
|   |   +-- ssm-bit <number>
|   +-- ptp
|   |   +-- admin-state <keyword>
|   +-- ql-minimum <keyword>
|   +-- ql-selection <boolean>
|   +-- ref-order
|   |   +-- fifth <keyword>
|   |   +-- first <keyword>
|   |   +-- fourth <keyword>
|   |   +-- second <keyword>
|   |   +-- third <keyword>

---snip---