Nx o sv and virl

Accelerating Nexus feature adoption with NX-OSv & VIRL

Huyến Dương [email protected]

Systems Engineer

CCIE #38257, VCP510

May 2014

2 © 2014 Cisco and/or its affiliates. All rights reserved. Cisco Confidential

q  Introduction to NX-OSv (Nexus OS virtual) •  NX-OSv - a powerful tool •  Different ways of exploring NX-OSv

q  VIRL (Virtual Internet Routing Lab) •  VIRL System Architecture •  Creating Network Topologies using VIRL •  Available locations for VIRL, dCloud etc. •  Licensing (internal & customers)

q  Simulating Real World Use Cases & Success Stories •  L3, L2

Agenda


NX-OSv


•  Configuration Validation, testing and prototyping new features

•  Troubleshooting complex networking problems •  Training and familiarity of NX-OS Operating

system without spending $$ •  Customer Demos/Training – Capex intensive

Data Center Deployment Challenges


•  Easily evaluate new features before it hits production – self, customer & partner education

•  Create highly accurate models – simulate real world & future networks

•  Ability to easily spawn switches on a convenient orchestration tool – flexibility & agility

•  Ability to scale multiple nodes within seconds – zero or lower capex

Solution: Cloud-ify NX-OS


•  NX-OSv stands for Nexus OS virtual •  NS-OSv is a software simulating Nexus switches running as

a VM

•  NX-OSv is NOT an emulator because the software data plane does not emulate the Nexus hardware

•  It doesn’t simulate differences between N6K, N5k, N7k, N3k & N9k.

It’s a reference platform for NX-OS

Introducing NX-OSv


NX-OSv – Benefits – Why NX-OSv ?

•  Conveniently build, test and deploy networks •  Rapid prototyping of new deployments

•  Validate/verify network designs and configurations

•  Reduction in expenditure on lab equipment •  Decrease time for deployment of new services

•  Availability and ease of scaling resources •  Reducing risks due to configuration errors


NX-OSv - Endless Possibilities!

Configuration & Validation

Hands on Learning

Network Simulation

Programmatic API

NX-OSv


NX-OSv – Data Center Fabric Simulation


Survey Response – NX-OSv Usability

NX-OSv Usability Time Spent in Exploring NX-OSv

Configuration or CLI check,

55%

Programmatic API, 10%

Hands on learning, 12%

Network Simulation

and Prototyping,

23%


Survey Response – Preferred NX-OSv Orchestration Tool


NX-OSv – Easy to Use a) Integrated with VIRL (Virtual Internet Routing Lab)

http://virl.cisco.com/


NX-OSv – Easy to Use b) Running as a Virtual Machine


Features Verified on NX-OSv q Layer-3 Routing Protocols:

o BGP (MP-BGP) o EIGRP (IPv4 & IPv6) o  ISIS o OSPF and OSPFv3 o RIPv2 o Static Routing (IPv4 & IPv6)

q Management/Security Protocols: o AAA (LDAP, RADIUS, TACACS+) o CDP and LLDP o NTP o SNMP o Syslog

q Multicast Routing Protocols: o  IGMP / MLD o MSDP o PIM / PIM6

q First Hop Redundancy Protocols o GLBP o HSRP (IPv4 & IPv6) o VRRP

q Pre-Release Features may be available: o AMT o  LISP

q Programming o  Python o  NXAPI

Disclaimer: Some features such as NAC, Netflow and Policy Based Routing (PBR) are configurable, but may not work. This may be useful for CLI verification.


Unsupported Features on NX-OSv q Bi-Directional Forwarding (BFD) q Cisco TrustSec (Encryption) q HA – ISSU Software Upgrades q Layer-2 Switching (OTV is an exception) q Hardware (TCAM) Related Features:

q Access Control Lists (ACL’s) q Control Plane Policing (CoPP) q Quality of Service (QoS)

q Interface Counters q Port-Channel Interfaces (including vPC) q Port Security q Uni-Directional Link Detection (UDLD) q Virtual Device Context (VDC) q Q-in-Q Tunneling q 802.1x (dot.1x)


VIRL (Virtual Internet Routing Lab) - the missing link for test driven development


What is VIRL?

A network orchestration and virtualization platform that enables: • Point-and-click network design • Painless configuration •  Integration of platform-sync’d code • Rapid setup and tear-down • Seamless connectivity with ‘real’ networks • Portability and repeatability


IOS XR NX-OS IOS XE IOS

Virtualized in

IOS XRv

Virtualized in NX-OSv

Virtualized in CSR1000v

Virtualized in IOSv

Servers

Ubuntu, Cirros, 3rd party

appliances

Virtual Machines run the operating system but are NOT representations of a particular hardware platform – no fans, no switch fabric, no ASIC models

VIRL Architecture - Virtualized Platform Operating Systems


IOS XR NX-OS IOS XE IOS

Virtualized in

IOS XRv

Virtualized in NX-OSv

Virtualized in CSR1000v

Virtualized in IOSv

Servers

Ubuntu, Cirros, 3rd party

appliances

•  Same Control-plane code •  Same Management plane code •  Same memory footprint

•  Different CPU performance •  Different Forwarding plane code •  No ASIC emulation

VIRL Architecture - Virtualized Platform Operating Systems


Virtualization (nested?)

•  Virtualized devices (CPU, I/O, memory) enable a single host to support many virtual machines

•  KVM / QEMU provides a kernel-based Hypervisor / host-virtualization facility

•  Ubuntu provides the basic host operating system

•  Intel VT-x / AMD-V capable CPUs expose hardware-virtualization functions to Ubuntu / KVM

Physical Host

Host OS

Virtual Machines

Hypervisor

QEMU /


Keystone (Identity Services)

Glance (Image / Repository Services)

Nova (Compute Services)

Neutron (Networking Services)

Swift (Object

Services)

Cinder (Block

Storage Services)

Horizon

(Dashboard)

AP

Is / CLI

IaaS / cloud orchestration software – creates, manages, and deletes virtual resources according to API- or CLI-based instructions

Built on OpenStack


VM Maestro

•  The graphical topology editing tool

•  Enables rapid definition of network elements: ü  Routers ü  Links ü  Protocols ü  Facilities

•  Supports complex topologies

•  Manages simulations


VM Maestro






<?xml version="1.0" encoding="UTF-8" standalone="yes"?> <topology xmlns="http://www.cisco.com/VIRL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" simulationEngine="OPENSTACK" schemaVersion="0.6" xsi:schemaLocation="http://www.cisco.com/VIRL http://cide.cisco.com/vmmaestro/schema/VIRL.xsd"> <extensions> <entry type="String" key="management_network">flat</entry> <entry type="Boolean" key="AutoNetkit.enable_cdp">true</entry> <entry type="Boolean" key="AutoNetkit.enable_OnePK">true</entry> <entry type="String" key="AutoNetkit.address_family">dual_stack</entry> <entry type="String" key="AutoNetkit.ipv4_infra_subnet">10.0.0.0</entry> <entry type="String" key="AutoNetkit.ipv4_infra_prefix">8</entry> <entry type="String" key="AutoNetkit.ipv4_loopback_subnet">192.168.0.0</entry> <entry type="String" key="AutoNetkit.ipv4_loopback_prefix">22</entry> <entry type="String" key="AutoNetkit.ipv4_vrf_loopback_subnet">172.16.0.0</entry> <entry type="String" key="AutoNetkit.ipv4_vrf_loopback_prefix">24</entry> <entry type="Boolean" key="AutoNetkit.enable_routing">true</entry> <entry type="String" key="AutoNetkit.IGP">isis</entry> </extensions> <node location="518,292" subtype="IOSv" type="SIMPLE" name="Core"> <interface name="GigabitEthernet0/1" id="0"/> <interface name="GigabitEthernet0/2" id="1"/> <interface name="GigabitEthernet0/3" id="2"/> </node> <node location="519,172" subtype="IOSv" type="SIMPLE" name="A1"> <interface name="GigabitEthernet0/1" id="0"/> <interface name="GigabitEthernet0/2" id="1"/> <interface name="GigabitEthernet0/3" id="2"/> </node> <node location="648,368" subtype="IOSv" type="SIMPLE" name="A3"> <interface name="GigabitEthernet0/1" id="0"/> <interface name="GigabitEthernet0/2" id="1"/> <interface name="GigabitEthernet0/3" id="2"/> </node> <node location="403,382" subtype="IOSv" type="SIMPLE" name="A2"> <interface name="GigabitEthernet0/1" id="0"/> <interface name="GigabitEthernet0/2" id="1"/> <interface name="GigabitEthernet0/3" id="2"/> </node>

Topology Representations

•  Topologies are represented in XML

•  Files are highly portable and shareable

•  Integrated support for GIT repositories enables multi-user sharing, versioning


AutoNetKit

Network Information DB

XML Topology Definition

Configurations

Topology Renderings

AutoNetKit Auto-Configuration

AutoNetKit:

•  Understands OS-specific configuration constructs

•  Presents graphical representations of topology attributes

•  Converts configurations between different OS-types and platforms


Create Routers • Identify Type / Flavor • Associate Image (Glance) • Identify / Assign Resources • Associate Configuration • Launch the VM (Nova)

Create Networks / Links • Identify Links and End-Points • Assign End-Points to VMs • Assign Network / Link Characteristics

• Launch the Switch (Neutron)

XML Topology Definition

The Services Topology Director orchestrates the creation of VIRL virtual routers and inter-router links based on the XML-based topology definition and configurations based by VM Maestro

Services Topology Director


VM Maestro

Services Topology Director

Topology Graph with Router Configurations

1

2

Router Configurations

3

Topology Views 4

5 6

Virtual Machines / Switches

7

8A1-Console: 17000 A1-Aux: 17001 …

VIRL Workflow


VIRL Family

Cisco Modeling Labs

For Corporate users; multi-user network modeling, inc. TAC support

Developers

Individuals

VIRL Personal Edition

For Individual users, developers, students etc.

Multi-purpose platform to innovate for SDN / NFV / Cloud paradigms.

/dev/innovate


VIRL Family VIRL Personal

•  Personal Use

•  15 Cisco nodes (fixed)

•  Active call home (7 days off-net)

•  NO TAC support

•  VM images included •  IOSv •  IOS XRv •  CSR1000v •  NXOSv •  More to follow

Cisco Modeling Labs

•  Multi User

•  Scale from 15 … X Nodes

•  No active call home

•  TAC support

•  VM images included •  IOSv •  Linux Server •  Other VM images can be added


• NX-OSv: All features and upgrades – Completely FREE of charge!

• VIRL Personal is $200/year

Licensing for NX-OSv


Creating Topologies using VIRL - Simulating Real World Use Cases & Success Stories


1.  L2 – Fabric Path 2.  NX-OSv Layer 3 Topology

Simulating Real World Use Cases & Success Stories


VM Maestro






Use Case #1 – Fabric Path


Fabric Path – Simulating Leaf & Spine Nodes


Fabric Path – Simulating Leaf & Spine Nodes


Use Case #2 – NX-OSv Layer 3 Topology


Scaling Physical Topology with NX-OSv Nodes


DCI using BGP, MPLS

DC-1

DC-2

DCI


•  DevNet sessions - https://app.smartsheet.com/b/form?EQBCT=cb025e00120b45899fa75b85eca2c0a7

•  DevNet learning labs - http://bit.ly/1DeoPsl

•  http://wwwin-drrc.cisco.com/virl/download/ [Cisco Internal]

•  http://virl.cisco.com/

•  https://github.com/datacenter/nexus7000

•  https://github.com/VIRL-Open/sample-topologies

•  https://dcloud-sng-web-1.cisco.com/dCloud/

References

Nx o sv and virl

Education