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CCIE : ITD and RISE in CCIE Data Center

ITD and RISE are now part of CCIE Data Center:

Intelligent Traffic Director (ITD) is a hardware based multi-terabit layer 4 load-balancing, traffic steering and services insertion solution on the Nexus 5k/6k/7k/9k series of switches.

Domain Written Exam (%) Lab Exam (%)  
1.0 Cisco Data Center L2/L3 Technologies 24% 27% Show Details
2.0 Cisco Data Center Network Services 12% 13% Hide Details
2.1 Design, Implement and Troubleshoot Service Insertion and Redirection

  • 2.1.a Design, Implement and Troubleshoot Service Insertion and Redirection for example LB, vPATH, ITD, RISE

2.2 Design, Implement and Troubleshoot network services

  • 2.2.a Design, Implement and Troubleshoot network services for example policy drivenL4-L7 services
3.0 Data Center Storage Networking and Compute 23% 26% Show Details
4.0 Data Center Automation and Orchestration 13% 14% Show Details
5.0 Data Center Fabric Infrastructure 18% 14% Show Details
6.0 Evolving Technologies 10% N/A Show Details


To learn about RISE (Remote Integrated Services Engine), please see:

To learn about ITD (Intelligent Traffic Director), please see:


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Server Load balancing with NAT, using Nexus switches: ITD

Server load balancer (SLB) has become very common in network deployments, as the data & video traffic are expanding at rapid rate. There are various modes of SLB deployments today. Application load balancing with network address translation (NAT) has become a necessity for various benefits.

Cisco Intelligent Traffic Director (ITD) is a hardware based multi-terabit layer 4 load-balancing and traffic steering solution on the Nexus 5k/6k/7k/9k series of switches.

With our latest NX-OS Software 7.2(1)D1(1) (also known as Gibraltar MR), ITD supports SLB NAT on Nexus 7k series of switches.

In SLB-NAT deployment, client can send traffic to a virtual IP address, and need not know about the IP of the underlying servers. NAT provides additional security in hiding the real server IP from the outside world. In the case of Virtualized server environments, this NAT capability provides increased flexibility in moving the real servers across the different server pools with out being noticed by the their clients. With respect health monitoring and traffic reassignment, SLB NAT helps applications to work seamlessly without client being aware of any IP change.

ITD won the Best of Interop 2015 in Data Center Category.


ITD provides :

  1. Zero latency load-balancing.
  2. CAPEX savings : No service module or external L3/L4 load-balancer needed. Every Nexus port can be used as load-balancer.
  3. IP-stickiness
  4. Resilient (like resilient ECMP), Consistent hash
  5. Bi-directional flow-coherency. Traffic from A–>B and B–>A goes to same node.
  6. Monitoring the health of servers/appliances.
  7. Handles unlimited number of flows.

Documentation, slides, videos:

Email Query or

Connect on twitter: @samar4

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ITD: Load Balancing, Traffic Steering & Clustering using Nexus 5k/6k/7k/9k

Cisco Intelligent Traffic Director (ITD) is an innovative solution to bridge the performance gap between a multi-terabit switch and gigabit servers and appliances. It is a hardware based multi-terabit layer 4 load-balancing, traffic steering and clustering solution on the Nexus 5k/6k/7k/9k series of switches.

It allows customers to deploy servers and appliances from any vendor with no network or topology changes. With a few simple configuration steps on a Cisco Nexus switch, customers can create an appliance or server cluster and deploy multiple devices to scale service capacity with ease. The servers or appliances do not have to be directly connected to the Cisco Nexus switch.

ITD won the Best of Interop 2015 in Data Center Category.

With our patent pending innovative algorithms, ITD (Intelligent Traffic Director) supports IP-stickiness, resiliency, consistent hash, exclude access-list, NAT (EFT), VIP, health monitoring, sophisticated failure handling policies, N+M redundancy, IPv4, IPv6, VRF, weighted load-balancing, bi-directional flow-coherency, and IPSLA probes including DNS. There is no service module or external appliance needed. ITD provides order of magnitude CAPEX and OPEX savings for the customers. ITD is much superior than legacy solutions like PBR, WCCP, ECMP, port-channel, layer-4 load-balancer appliances.

ITD provides :

  1. Hardware based multi-terabit/s L3/L4 load-balancing at wire-speed.
  2. Zero latency load-balancing.
  3. CAPEX savings : No service module or external L3/L4 load-balancer needed. Every Nexus port can be used as load-balancer.
  4. Redirect line-rate traffic to any devices, for example web cache engines, Web Accelerator Engines (WAE), video-caches, etc.
  5. Capability to create clusters of devices, for example, Firewalls, Intrusion Prevention System (IPS), or Web Application Firewall (WAF), Hadoop cluster
  6. IP-stickiness
  7. Resilient (like resilient ECMP), Consistent hash
  8. VIP based L4 load-balancing
  9. NAT (available for EFT/PoC). Allows non-DSR deployments.
  10. Weighted load-balancing
  11. Load-balances to large number of devices/servers
  12. ACL along with redirection and load balancing simultaneously.
  13. Bi-directional flow-coherency. Traffic from A–>B and B–>A goes to same node.
  14. Order of magnitude OPEX savings : reduction in configuration, and ease of deployment
  15. Order of magnitude CAPEX savings : Wiring, Power, Rackspace and Cost savings
  16. The servers/appliances don’t have to be directly connected to Nexus switch
  17. Monitoring the health of servers/appliances.
  18. N + M redundancy.
  19. Automatic failure handling of servers/appliances.
  20. VRF support, vPC support, VDC support
  21. Supported on all linecards of Nexus 9k/7k/6k/5k series.
  22. Supports both IPv4 and IPv6
  23. Cisco Prime DCNM Support
  24. exclude access-list
  25. No certification, integration, or qualification needed between the devices and the Cisco NX-OS switch.
  26. The feature does not add any load to the supervisor CPU.
  27. ITD uses orders of magnitude less hardware TCAM resources than WCCP.
  28. Handles unlimited number of flows.

For example,

  • Load-balance traffic to 256 servers of 10Gbps each.
  • Load-balance to cluster of Firewalls. ITD is much superior than PBR.
  • Scale IPS, IDS and WAF by load-balancing to standalone devices.
  • Scale the NFV solution by load-balancing to low cost VM/container based NFV.
  • Scale the WAAS / WAE solution.
  • Scale the VDS-TC (video-caching) solution.
  • Scale the Layer-7 load-balancer, by distributing traffic to L7 LBs.
  • ECMP/Port-channel cause re-hashing of flows. ITD is resilient, and doesn’t cause re-hashing on node add/delete/failure.

Documentation, slides, videos:

Email Query or

Please note that ITD is not a replacement for Layer-7 load-balancer (URL, cookies, SSL, etc). Please email: for further questions.

Connect on twitter: @samar4

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Seeing is believing – Graphics Conference first day brings together industry players with Cisco

No longer just the domain of gamesters and young-at-heart, the graphics industry is now providing stunning performance to all sorts of industries such as manufacturing, finance, healthcare and design. Perhaps none more so though than the Oil and Gas Industry, as companies explore in harder-to-get-at places and dangers to workers are greater than ever. The GPU Technology  Conference in San Jose this week showed how far we’ve come in accelerating energy discoveries with less time spent travelling to far off dangerous environments.

So what’s it all about? Well, for starters four partners – Cisco, NetApp, NVIDIA and Citrix have got together to change the way users of high performance graphics applications can be used in remote and local environments. Normally geophysicists and geoscientists using, say, Schlumberger or Halliburton seismic analysis software use powerful (but expensive) workstations or have to work close to large central datacenters to get the kind of performance they need to get their applications running fast enough and their graphics visualizations looking smooth and not jittery.

That’s where the four partners come in. Putting it simply Cisco and NetApp provide a best-in-class virtualized data center with ‘Flexpod’, then NVIDIA provide high-performance  GPUs (Graphics Processor Units) that slot into the Flexpod (remember it’s based on Cisco UCS so have heaps of flexibility), and then remote users can access their graphics applications on inexpensive devices (even tablets!) using VDI (Virtual desktop infrastructure) software from Citrix. This is on show in various places in the Exhibit hall, including Cisco’s booth # 219.

What does it all mean? Well, for starters, really fast loading of the datasets – no waiting around in the break room for ages! Also – remote access to the analysis of the data – so the data never leaves the datacenter so better security. Add to that the possibility that scientists can now work together using Cisco and other collaboration tools, and productivity just got a shot-in-the-arm. The demo stowed the applications running remotely – performance was indistinguishable from running locally on expensive and cumbersome workstations or on local datacenters!

Folks at the booth were impressed. “Wow – that’s graphics visualization and analysis on steroids'” said one visitor. “We could really use that where I work” said another (yes, we’ll be following that one up!).

Other highlights today were Cisco presenting the benefits of UCS to a sizable audience, and Dassault Systems, an accomplished Cisco UCS user, talking about how they use NVIDIA GRID and CISCO UCS for Graphics Virtualization. Laurent Seror, Founder and CEO, Outscale, presents. Tomorrow we’ll hear from the Ford Motor Company with a presentation entitled ‘So you want to Deploy High Resolution Graphics Desktop Virtualization’. Chip Charnley, Technical Expert, Client Technologies, Ford Motor Company will review both the process of doing, and the results of the Proof of Concept for implementing XenApp and XenDesktop that was conducted jointly by Ford Motor Company, Citrix and Cisco. Read More »

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RISE: Remote Integrated Service Engine Demo @ Cisco Live Milan

The Cisco® Remote Integrated Services Engine (RISE) allows both physical and virtual external service appliances to be attached to the Cisco Nexus® 7000 Series Switches and gain the same benefits as if the appliances were directly connected to the switch backplane like a dedicated service module. Cisco RISE provides a bidirectional control plane for tightly coupling network services to data center switching. Cisco RISE establishes a communication path between the network data plane and the service appliance, simplifying deployment and optimizing data paths with better traffic visibility in the data center. RISE is supported Cisco Prime NAM, Citrix NetScaler 1000v, Citrix NetScaler VPX, Citrix NetScaler MPX, Citrix NetScaler SDX etc.

Interested in knowing more about Cisco® RISE . The engineering team will showcase demos of some of the innovative features being designed for the Nexus 2K to 7K platforms. These are 15-30min Software Demos performed by our technical leaders. Please stop by our booth or visit the Nexus Data Center Whisper suites to watch the live demo and get some free goodies. Email questions to:

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