Table of Contents

n1kv-kvm_Verified_Scalability_5x.fm

Verified Scalability Guide for Cisco Nexus 1000V for KVM 5.x

First Published: 2014-07-31

Last Updated: 2016-05-12

This document describes the verified configuration limits for Cisco Nexus 1000V for KVM software Releases 5.2(1)SK3(1.1), 5.2(1)SK3(2.1), 5.2(1)SK3(2.2), 5.2(1)SK3(2.2a), and 5.2(1)SK3(2.2b). The following is the change history for this document.

Date

Description

2016-05-12

Removed the scalability information about the VXLAN Gateway feature.

Starting with Release 5.2(1)SK3(1.1), Cisco Nexus 1000V for KVM does not support the VXLAN Gateway feature.

2015-12-16

.

2014-11-21

Changed the document to include all Release 5.x releases.

2014-07-31

Document created.

Contents

This document includes the following sections:

- Introduction

- Configuration Limits for Cisco Nexus 1000V for KVM

- Related Documentation

- Obtaining Documentation and Submitting a Service Request

Introduction

Cisco Nexus 1000V for KVM is a distributed virtual switch that works with the Linux Kernel-based virtual machine (KVM) open source hypervisor. In addition, Cisco Nexus 1000V for KVM uses OpenStack as its cloud operating system to control large pools of compute, storage, and networking resources throughout a data center.

The networking function of OpenStack is controlled and managed by a process called Neutron on the network controller. Neutron has been extended in a such a way that the Cisco Nexus 1000V for KVM can provide the networking capabilities to the compute nodes and the virtual machines (VMs). As Neutron creates and configures its networks for its environment, this configuration is passed to the Cisco Nexus 1000V for KVM switch.

Using OpenStack, you create VM networks and subnets on the Cisco Nexus 1000V for KVM by defining components such as the following:

- Tenants

- Network segments (subnets), such as VLANs, VLAN trunks, and VXLANs

- IP address pools

Using the Cisco Nexus 1000V for KVM VSM, you create policy profiles (called port profiles on the VSM) that define port classification information, such as security settings (ACLs and so on).

When a VM is deployed, a port profile is dynamically created on the Cisco Nexus 1000V for KVM for each unique combination of port classification, VM network, and VM subnet. All other VMs deployed with the same policy to this network reuse this dynamic port profile.

Note You must consistently use OpenStack for all VM network and subnet configuration. If you use both OpenStack and the VSM to configure VM networks and subnets, the OpenStack and the VSM configurations can become out-of-sync and result in faulty or inoperable network deployments. For information about OpenStack, see the Cisco Nexus 1000V for KVM Virtual Network Configuration Guide.

Configuration Limits for Cisco Nexus 1000V for KVM

The following table lists the supported configuration limits for the Cisco Nexus 1000V for KVM components.

Table 1 Supported Configuration Limits

Cisco Nexus 1000V for KVM Components

Supported Configuration Limits

Hosts

128

Virtual machines

4000

vEthernet interfaces

8000 per DVS

990 per host

Port profiles

6000

Network profiles

2000

Policy profiles

512

Active VLANs

2000

Active VXLANs

2000

MAC addresses

4096 per VLAN per host

Physical trunks

128

Physical NICs

6 per host

vEthernet trunks

8

ACLs

128

ACEs

128 per ACL

ACL interfaces

4000 per DVS

990 per host

Netflow policies

64 per DVS

64 per host

Netflow interfaces

4000 per DVS

990 per host

Port channel

128 per DVS

4 per host

Multicast groups

1000 groups

Tenants

512

IP pools

4000

The following table lists the verified configuration limits for the Cisco Nexus 1000V for KVM components for Release 5.2(1)SK3(2.2b).

Table 2 Verified Configuration Limits for Release 5.2(1)SK3(2.2b)

Cisco Nexus 1000V for KVM Components

Configuration Limits

Hosts

35

Tenants

512

Virtual machines

1280

vEthernet interfaces per host

990

vEthernet interfaces

7846

Active VLANs

2368

Active VXLANs

4097

Related Documentation

This section lists the documents used with the Cisco Nexus 1000V for KVM.

General Information

Install and Upgrade

Configuration Guides

Reference Guides

Troubleshooting, Password Recovery, System Messages Guides

Obtaining Documentation and Submitting a Service Request

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