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Demo Lab Guide – Network Function Virtualization

(HOL) Hands-On Lab Guide Deploying Virtualized IP Multimedia Subsystems in an OpenStack Environment

Product Domain: Network

Author: NFV Product Engineering

Version: 1.01 Date: 24/03/2016

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Table of Contents 1 Product Overview ............................................................................................................................................ 3

1.1 Lab Preparation Considerations and Caveats ................................................................................. 4

2 Introduction ...................................................................................................................................................... 5

2.1 Lab Topology and Essential Information ......................................................................................... 6

2.1.1 Lab Addressing and Login Details ...................................................................................................... 7

3 NFV – Virtual IP Mutlimedia Subsystem ..................................................................................................... 8

3.1 Pre-configured VNF Components ................................................................................................... 9

3.2 Pre-configured – vIMS deployment ................................................................................................ 9

3.3 Pre-configured Network Visualization Tool ................................................................................. 10

3.4 Pre-configured Client and Stress Test tool .................................................................................... 11

3.5 Execution time of scripts ................................................................................................................... 12

3.6 Termination Scripts ............................................................................................................................ 13

4 Lab User Interactions .................................................................................................................................... 14

4.1 Cacti Network Monitoring................................................................................................................. 14

4.2 Stress Testing ....................................................................................................................................... 14

4.3 Scaling ................................................................................................................................................... 15

4.4 OpenStack Dashboard ....................................................................................................................... 15

4.5 Logs ....................................................................................................................................................... 15

5 Summary ......................................................................................................................................................... 16

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1 Product Overview

This document compliments a virtual lab consisting of key design considerations to implement Network

Functions Virtualization Infrastructure (NFVI), which is purpose built to accommodate service provider

level requirements set forth by the provider’s / partners technical staff and Dell Inc. technical architects

and engineers. The NFVI considered here is for lab purposes only and does not reflect a production

implementation supporting Virtual Network Functions (VNF). Also, please consider these software

components may span multiple geographic locations and incorporate many forms of COTS compute,

network, and storage.

Note: Gain expertise and terminology understanding by viewing this group specification document:

ETSI NFV v1.1.1: “Network Functions Virtualization (NFV); Use Cases”

Network Functions Virtualization Infrastructure

(NFVi) is an enhanced common infrastructure

framework. It’s comprised of next generation

distributed compute architectures and services

delivery mechanisms such as Software Defined

Networks (SDN), public & private cloud

infrastructure, northbound APIs, southbound

APIs, transport, and services-oriented

technologies. Distributed operating systems

paired with commercially available computing

elements (COTS) offers Cloud Communications

Service Providers an alternative to acquiring

traditional stand-alone infrastructure hardware

and/or software serving a specific function (i.e.

Load Balancer, Firewall, Intrusion Detection,

Customer Premise Equipment, etc.).

Consolidating proprietary network equipment

hardware into high volume servers,

commoditized switching, and storage provides

significant benefit towards operations and

accelerated services delivery.

NFVi systems termed here encompasses

foundational components such as; servers,

storage, networking, infrastructure management (VIM), and sub-system components to deliver an

end-to-end solutions framework. Openly delivered architectures are constructed by Dell in

collaboration with its partners in the form of disaggregated building blocks predominantly delivered by

provider’s requirements. Each element is specifically selected and optimized to deliver carrier-grade

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resiliency, delivered in a highly available format, configured using PowerEdge C/M/R-Series Servers,

Dell Networking S/Z-Series switching products, and logically connected using Openstack as the key

distribution platform offered in a variety of sub-system architectures.

Note: For any NFV related queries of opportunities please reach out to ASK_NFV_PLM@dell.com

1.1 Lab Preparation Considerations and Caveats

It is in your best interests to ensure the demo environment you will be demonstrating is clean & tidy

before you begin. For this reason we would recommend, where possible, you log in to your demo at

least 15 minutes prior to delivery and check the following;

1. Familiarize yourself with the environment during this time and check any specific features you are

expecting to demo.

2. Most importantly, be crystal clear with yourself on what it is you plan to show. A full demo of every

feature described below (with questions) can take several hours. If you only have a short time slot

be sure to focus on the key points that address the customer’s pain points and will drive value

home to them.

3. Ensure that you have scheduled the demo for sufficient time so as not to have the demo end

before you are finished with the customer.

Any other guidance on how the user should prepare for the lab can be added here. If there are

limitation or something the user should be aware of call out also.

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2 Introduction

In this lab, you will gain technical exposure to the following:

Using open source Fuel to simplify OpenStack deployment

OpenStack consisting of three controllers and two compute nodes

Understanding the essential concepts of virtualized infrastructure management (VIM)

Demonstrating key NFV concepts using OpenStack as a platform to build and support computing,

networking, and storage infrastructure

Applying your knowledge and executing an automated script, which to deploys a simple Reference

Virtual Network Function (VNF),

Working knowledge of an open source IP Multimedia Subsystem

Validating end-to-end functionality with client communication software

Note: In this lab, you are expected to have a basic understanding of Dell systems infrastructure.

Because this NFV system is virtualized, the physical aspects of networking and servers is out of scope.

Please refer to other demos.dell.com lab demonstrations, which may focus on hardware/product

specifics.

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2.1 Lab Topology and Essential Information

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2.1.1 Lab Addressing and Login Details

Element IP Method UserID Password Comments

Fuel 172.16.10.250/24 http:8000, ssh admin admin Deploys Openstack Cloud

Horizon 172.16.12.50/24 http, ssh admin admin Openstack UI

Jump 172.16.11.10/24 screenconnect demouser password Jump Server

controller-1 / node-47 172.16.11.15 ssh root r00tme controller node

controller-2 / node-46 172.16.11.14 ssh root r00tme controller node

controller-3 / node-43 172.16.11.11 ssh root r00tme controller node

compute-1 / node-44 172.16.11.12 ssh root r00tme compute node

compute-2 / node- 172.16.11.13 ssh root r00tme compute node

ALL vIMS Machines Varies QEMU Console root root123 all the vIMS instances

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3 NFV – Virtual IP Mutlimedia Subsystem

The lab delivers key business and technical benefits of Dell NFV Platform. To demonstrate the core

capabilities of Dell NFV Platform we will now deploy the vIMS on top of Dell NFV Platform. Dell NFV

Platform supports following feature related to vIMS:

- Automated Deployment

- High Availability

- Automated user provisioning

- Service Monitoring

- Automated Scaling

- Load Balancing

- SIPp stress testing

- User registration and call setup using sip clients i.e. Zoiper , Xlite.

- Sip Call

- Text Messaging

- Conference Call

- Call Hold

- Call Forwarding

- Call Recording

- Video Calling

- Stress testing using SIPp as a tester tool.

- Cacti for the monitoring purpose of load on different nodes.

- Web RTC

- Scaling up automatically when loads reaches a maximum threshold

- Scaling down

- Load balancing

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3.1 Pre-configured VNF Components

The lab focuses on key technical NFV concepts using an open-source vIMS system, which is

considered a reference VNF. To demonstrate the core capabilities of vIMS, we will pre-deploy the vIMS

on an Openstack platform. Here is a list of the core topics covered during the lab:

- vIMS deployment in HA

- User provisioning

- Cacti monitoring

- User registration and call setup using sip clients i.e. zoiper, Xlite.

3.2 Pre-configured – vIMS deployment

The virtual IP media system is already configured, however, here are the pre-executed scripts that

were constructed to build the environment. By running these scripts prior to lab deployment, you gain

roughly 30 – 45 minutes of time to complete the entire buildout of the vIMS environment.

1. Extract the vIMS.tar.gz using the command:

cd / tar -zxvf vIMS-demo.tar.gz

2. Change the current directory to the vIMS directory by running the command

cd /vIMS

3. Start deploying the vIMS by entering the following command:

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3.3 Pre-configured Network Visualization Tool

To get SNMP visualization an open source software cacti is used. To install Cacti the following steps

are to be followed

1. Enter the vIMS directory by entering the command:

cd /vIMS

2. Enter the command to spawn the cacti node

python Cacti.py

3. Look up the Cacti node IP from Openstack Horizon or Use the IP provided in the end of script.

4. Open the web browser and type http://<cacti ip>/cacti

5. Login using the credentials, Username = admin, Password = admin

6. Go to devices and enter the IP of sprout node in the field Hostname

7. Graphs can be viewed on the top "graphs" tab.

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3.4 Pre-configured Client and Stress Test tool

Note: Part of this HOL also included the creation of additional scripts to setup open-source IMS

clients and stress test tools. Portions of these elements will be visited in the lab user interaction

section later, but here are the pre-executed steps to automatically bring up the client side tools:

1. To create the users , run the following script:

python user_create.py

2. Enter the no of users you want to create: 100

3. To register user in vIMS install soft sip clients i.e. zoiper , Xlite etc.

4. Create an account in the zoiper/Xlite

5. Use the credentials given in the sip users.txt file on desktop to register users.

6. Open the Zoiper client go to settings and click on create account:

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7. Choose the account type SIP from the options

8. Copy the credentials from the file sip users.txt.

E.g. username= 2010000001@dellnfv.com , password = 7kkzTyGW

9. In the outbound proxy option use the <bono-0 floating ip address>:5060

10. Click on next and check the box of “skip auto detection”

11. Go to settings and click on preferences as shown in below figure.

12. Enter the authentication username from the file sip users.txt.

13. Click on register to register the user

14. Same are the steps for any soft client you use.

3.5 Execution time of scripts Depending upon the computational power, all the four scripts have variant execution time.

Approximate time of completion is stated below:

- Initial deploy scripts takes 45 minutes

- User Create script takes 120 minutes (for 100,000 users)

- Scale-up takes 30 minutes

- Scale-down takes 10 minutes

- vIMS termination script takes 10 minutes

- Stress test script takes 15 minutes

- Cacti script takes 10 minutes

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3.6 Termination Scripts 1. To terminate, go to vIMS directory and enter the command

python Remove.py

2. To stop the stress test, go to vIMS directory and enter the command

python Remove_test.py

Note: Provide the no of test nodes you want to remove = 2

3. To terminate Cacti enter the command

python Remove_cacti.py

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4 Lab User Interactions

This section includes instructions that the lab user will type/execute. This includes the stress testing

and the scale out on the existing environment. Viewing the various dashboards like Cacti and Horizon.

4.1 Cacti Network Monitoring

1. Open the web browser and type http://172.16.12.163/cacti

2. Login using the credentials

Username = admin

Password = admin

3. Graphs can be viewed on the top "graphs" tab.

4.2 Stress Testing

To start the stress test, enter the command

python tester.py

Note: Enter the no. of nodes to spawn =3

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4.3 Scaling

The vIMS will scale up and down automatically on reaching the threshold. Threshold is configured in

terms of CPU usage, Memory Usage and Number of Call Another stack named scale will be created in

scale up process.

To view the Scale up/down progress ssh into control node and enter the following commands

cd /vIMS

vi scale_progress

4.4 OpenStack Dashboard To view OpenStack horizon/dashboard use the following IP in the address bar http://172.16.12.50/dashboard

- Login using the credentials

Username = admin Password = admin

4.5 Logs

All the scripts generate logs during execution. To see the logs generated during the execution of scripts,

go into the /vIMS/logs/ directory. It contains a total of 2 files for each script; one file is for activity log i.e

the total flow of script in which it deploys vIMS components and the second is error log in case if any

error occurs during the execution of script.

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5 Summary

In this document we have successfully deployed and validated the working and deployment of

Clearwater vIMS using a representative sample of NFV Infrastructure, all of which are Dell NFV capable

solutions. After the complete deployment we were able validate the sip call using Clearwater vIMS and

its monitoring using Cacti. We have also used SIPp as a stress test to bench mark and validate the

automatic scale up and down the vIMS

Note:- Feedback on the demonstration and the guide would be greatly appreciated. Any feature or

enhancements you would like to see to either please email the Demo Center team and we will provide

the feedback to the NFV Product team.

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