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Reference Architecture | Dynamic L4-L7 Service Insertion with Cisco ACI and A10 Thunder ADC

A10 Networks Thunder ADC

A10 Thunder ADC appliances are the next-generation application delivery controllers running A10’s

Advanced Core Operation System (ACOS®) that delivers high performance and scalability suited for cloud

scale environments. The comprehensive features, rich services and ﬂexible architecture of ACOS powered by

A10 Harmony allow A10 devices to maximize utilization of CPU resources, and accelerate service integration

and manageability via open and standards-based programmability. A10 Harmony programmatically exposes

rich features for cloud and network functions virtualization (NFV) environments and ensures ﬂexibility and

simpliﬁed operations.

The A10 Thunder ADC appliances are available in physical, virtual or hybrid form factor oﬀering ﬂexible options

for deployment. ADC features and conﬁgurations are identical and transferable across all form factors so that

customers can choose any form factor that meets the needs of their environment.

Thunder ADC hardware appliances: The physical A10 Thunder appliances come with 1/10/40/100 Gigabit

Ethernet port options and can be connected directly to the Cisco Nexus 9000 series leaf switches. These

hardware appliances oﬀer high performance and can scale above 150 Gbps of ADC/server load balancing

throughput.

vThunder ADC virtual appliances: The virtual machine version of Thunder appliances, vThunder, runs on

almost all industry leading hypervisors and oﬀers maximum ﬂexibility when it comes to deployment choice.

The vThunder virtual machine (VM) is supported on VMware, KVM, Citrix Xen and Microsoft Hyper-V hypervisor

platforms.

Thunder HVA hybrid appliances: A10 Networks Thunder 3030S HVA appliances oﬀer multiple independent

virtual ADC VMs running on a hardware device that oﬀers multi-tenancy with strong tenant isolation, data

separation and per VM policy management. The HVA appliances provide hardware acceleration and also enable

tenants to orchestrate new instances on demand according to the predeﬁned policies.

A10 Harmony Architecture, Programmability and SDN Integration

A10 Harmony provides the next-generation architecture for A10 Thunder ADC platforms, which lay the

foundation of rapid services integration for enterprise, cloud and service provider networks. With A10 Harmony,

developers can integrate intelligent application networking services more easily with high-performance

A10 Thunder Series product lines. A10 Harmony accelerates service integration and manageability through

the open standards-based A10 Networks aXAPI® REST-based API and SDK that enable eﬀective provisioning,

telemetry for rich analytics and comprehensive security for application networking and security development.

The A10 device package for Cisco ACI is built on the foundation of A10 Harmony architecture and leverages

aXAPI SDK and RESTful APIs to provide server load balancing and application delivery services for Cisco ACI

using high-performance cloud, virtual or physical Thunder ADC appliances.

Cisco ACI Fabric with A10 Thunder ADC Devices

The Cisco ACI data center design has three or more APICs attached to the Nexus 9000 series leaf switches that

function as the centralized policy controller. The ACI fabric consists of Cisco Nexus 9000 Series Switches serving

the leaf and spine switch functions. Cisco APIC serves as the single point of automation and fabric element

management in both physical and virtual environments. The APIC communicates with other elements in the

fabric via a plugin, also known as device package. This design approach is agnostic to physical layout and it

doesn’t matter how the elements of the data center are physically connected to the ACI fabric built using Nexus

9000 switches. The physical servers, storage, appliances and other vendor equipment can be placed anywhere

in the fabric. The virtualized elements could be running on any virtualized server host that is physically

connected to the fabric. The physical servers and appliances connected to the fabric could also run multiple

instances of virtual machines. The A10 Thunder ADC physical devices can be attached to the leaf switches

directly as shown in Figure 6. The vThunder ADC virtual devices can run on any virtualized server that is directly

attached to the leaf switch as well. Figure 6 shows a physical Cisco ACI fabric with various elements of the data

center attached to it.

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