Cisco Blogs

Cisco Blog > Data Center

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

Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

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 »

Tags: , , , , , , , , , , ,

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:

Tags: , , , , , , , , , , ,

Connected Graphics on display at SEG 2014 by NetApp, Cisco, Citrix and NVIDIA

The coming week sees the SEG International Exposition and 84th Annual Meeting take place in Denver, Colorado. SEG is the Society of Exploration Geophysicists – those  scientists that are at the sharp end of finding oil and gas around the world. Despite the current boom in non-conventional drilling methods (fracking and horizontal drilling), these natural resources are becoming harder to find. That’s where the partnership between NetApp, Cisco, Citrix and NVIDIA comes in.

You may remember that the four partners got together last year at the same show to perform live in-booth demonstrations on virtualized delivery of industry professional 3D graphics applications (Citrix joins NetApp at SEG 2013 to demonstrate virtualized delivery of 3D professional graphics applications). This year we’ll be taking that further by talking about how we’ve performed additional testing and validation work on the joint solution with some key additions to the technology.

Visit us along with our partners NetApp, NVIDIA and Citrix at the NetApp  Booth 709. You’ll see how we can help oil and gas enterprises enhance collaboration and enable faster decision making without exposing sensitive data. Other NetApp and Cisco partners will join us for in-booth demos and events to highlight solutions that help you:

  • Scale your exploration environment rapidly without impacting performance
  • Enable your remote teams wherever they happen to be
  • Deliver secure 3D access to data and applications

The four partners have come together to provide an integrated solution that utilizes the power of Flexpod from Cisco and NetApp to virtualize the computing, networking and storage infrastructure, combined with graphics processing unit (GPU) capabilities from NVIDIA and desktop virtualization from Citrix. This enables the delivery of large-scale data sets for interactive and collaborative analysis in real-time, regardless of geographic site or worker location. Workers get a similar working environment as if they were local to the datacenter infrastructure, or using a powerful and costly local workstation.

Randal Kenworthy

Randal Kenworthy

Check out the NetApp blog tomorrow to find out what solutions will be demoed (Your Guide to NetApp at SEG – the Society of Exploration Geophysicists Int’l Exposition in Colorado). Also, lookout for further Cisco Blogs on both the Manufacturing Blog and Energy Blog sites for more information about the industry offers, business solutions and customer insights in these industries. In particular there is an excellent blog by  called Improving R&D Through Remote Visualization that shows how different industries such as discrete and process manufacturing can make use of these technologies.

Contact Wally Beck to schedule a one-on-one or in-booth/demo meeting with a NetApp oil and gas technical expert. Make a note to him if you would also like to see a Cisco person at the booth if available.

We look forward to seeing you there!

Tags: , , , , , , , , , ,

Cisco Meraki Systems Manager Extends Enterprise Mobility Management to the Cloud

The industry is going beyond BYOD—it’s not just about simply connecting the device anymore: the mobile landscape has grown to include apps, devices and content, all of which require security and management. This is no easy task. Enterprise mobility management (EMM) is no longer a nice-to-have for our customers—it is a necessity. You need a mobile strategy.

We at Cisco have been steadily building out our mobility portfolio across infrastructure, policy and management over the past few years to provide our customers with what they need to get ahead of the mobile trend.

It has always been Cisco’s strategy to use open API’s with ISE to integrate with host of 3rd party EMM vendors, including Citrix, MobileIron, Airwatch and many more. We are now extending that flexibility to create a cloud-managed EMM offering with our Cisco Meraki solution.  The latest addition to the Cisco mobility portfolio, the Cisco Meraki Systems Manager Enterprise is an evolution of Cisco Meraki’s existing MDM cloud offer, and a natural extension of the Cisco Meraki network management solution (e.g. extending management of wireless access points to the management of devices connecting to the enterprise domain).

Cisco is committed to customer choice, and will continue to offer different options to the market, including ecosystem EMM partner solutions. The addition of the Cisco Meraki Systems Manager broadens that portfolio to strengthen our offering and empower our customers attain the mobility solution best suited for their specific requirements.

For more information on the Cisco Meraki Systems Manager, read the full announcement blog here.

Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,