Network Forwarding Path Management

Warning

Network Forwarding Path Management commands are deprecated and will be removed in the first major release after the Tacker server version 9.0.0 (2023.1 Antelope release).

Network Forwarding Path (NFP) is composed of a Service Function Chain (SFC) and a Flow Classifier (FC) in VNF Forwarding Graph (VNFFG).

This document describes how to manage NFP with CLI in Tacker.

Prerequisites

The following packages should be installed:

• tacker

• python-tackerclient

A default VIM should be registered according to VIM Management.

The following VNFDs are created with the name VNFD1 and VNFD2 according to VNF Descriptor (VNFD) Management.

• tosca-vnffg-vnfd1.yaml

• tosca-vnffg-vnfd2.yaml

$ openstack vnf descriptor create --vnfd-file tosca-vnffg-vnfd1.yaml VNFD1
$ openstack vnf descriptor create --vnfd-file tosca-vnffg-vnfd2.yaml VNFD2

The VNFs from the created VNFDs are deployed with the name VNF1 and VNF2 according to VNF Management.

$ openstack vnf create --vnfd-name VNFD1 VNF1
$ openstack vnf create --vnfd-name VNFD2 VNF2

A VNFFG should be deployed according to VNF Forwarding Graph (VNFFG) Management. Before deploying the VNFFG, a VNFFGD may need to be created according to VNF Forwarding Graph Descriptor (VNFFGD) Management.

CLI reference for NFP Management

1. List Network Forwarding Path

$ openstack vnf network forwarding path list

Result:

+--------------------------------------+------------------+--------+--------------------------------------+---------+
| ID                                   | Name             | Status | VNFFG ID                             | Path ID |
+--------------------------------------+------------------+--------+--------------------------------------+---------+
| ed450e71-345d-4dc8-8f32-69e3a697ad56 | Forwarding_path1 | ACTIVE | 3b1be255-4b3b-4ff2-b985-19f043f3f40c | 51      |
+--------------------------------------+------------------+--------+--------------------------------------+---------+

Help:

$ openstack vnf network forwarding path list --help
usage: openstack vnf network forwarding path list [-h]
                                                  [-f {csv,json,table,value,yaml}]
                                                  [-c COLUMN]
                                                  [--quote {all,minimal,none,nonnumeric}]
                                                  [--noindent]
                                                  [--max-width <integer>]
                                                  [--fit-width]
                                                  [--print-empty]
                                                  [--sort-column SORT_COLUMN]
                                                  [--vnffg-id VNFFG_ID]

List NFP(s) that belong to a given tenant.

optional arguments:
  -h, --help            show this help message and exit
  --vnffg-id VNFFG_ID   List NFP(s) with specific VNFFG ID

2. Show Network Forwarding Path

$ openstack vnf network forwarding path show <NFP>

Result:

+-------------+--------------------------------------+
| Field       | Value                                |
+-------------+--------------------------------------+
| chain_id    | 89f99c03-a152-413b-bb39-c7618a54b23a |
| id          | ed450e71-345d-4dc8-8f32-69e3a697ad56 |
| name        | Forwarding_path1                     |
| path_id     | 51                                   |
| project_id  | e77397d2a02c4af1b7d79cef2a406396     |
| status      | ACTIVE                               |
| symmetrical | False                                |
| vnffg_id    | 3b1be255-4b3b-4ff2-b985-19f043f3f40c |
+-------------+--------------------------------------+

Help:

$ openstack vnf network forwarding path show --help
usage: openstack vnf network forwarding path show [-h]
                                                  [-f {json,shell,table,value,yaml}]
                                                  [-c COLUMN] [--noindent]
                                                  [--prefix PREFIX]
                                                  [--max-width <integer>]
                                                  [--fit-width]
                                                  [--print-empty]
                                                  <NFP>

Display NFP details

positional arguments:
  <NFP>                 NFP to display (name or ID)

optional arguments:
  -h, --help            show this help message and exit