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No Latency Load Balancer in Data Centers

Cisco Intelligent Traffic Director (ITD) is a zero latency multi-terabit layer 4 load-balancer available on 5k/6k/7k/9k. It has support for traffic steering and clustering solution on the Nexus  series of switches.

ITD 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  switches, 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 takes load balancing decision in a single clock cycle of the switching hardware, Hence avoiding latency altogether.

ITD supports IP-stickiness, resiliency, 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 available on Nexus 7000/7700 series in NX-OS 6.2(10) or later. It is available for demo/EFT on Nexus 5k/6k/9k.  ITD is much superior than legacy solutions like PBR, WCCP, ECMP, port-channel, layer-4 load-balancer appliances.

Screen Shot 2015-03-02 at 10.28.21 AM

Note:- ITD is not a replacement for  L7 load balancers



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New Nexus 2348TQ Joins Nexus 2300 Series Fabric Extender Family

There is no doubt that the word transformation is being used to describe pretty much anything to do with the data center, but in all of this, it’s good to remember that little things can make a BIG difference in making day to day data center operations easier.

With simplicity as one of the key tenants, the Nexus 2300 Series Fabric Extenders continues on the same trajectory as previous Fabric Extenders by delivering a solution that, when coupled with Cisco Nexus parent switches, makes adding performance, scale, and operational simplicity to the network access simple.

Today, we add a new member to this 3rd generation fabric extender family – the Nexus 2348TQ, which together with the Nexus 2348UPQ, offers more connectivity options for data centers of different sizes with varying performance and application needs.

The Nexus 2348TQ is a compact, 1RU Fabric Extender that offers:

– 48 x  10G BASE-T host port interfaces

– 6 x 40 Gigabit Ethernet ports for parent switch connectivity

This makes the Nexus 2348TQ an ideal solution for data centers looking to upgrade their server access deployment from 1GBASE-T to 10Gbps speeds and from 10Gbps to 40Gbps connectivity.



As outlined in my previous blog, all members for of the Nexus 2300 Series Fabric Extenders support:

  • Larger buffers to absorb bursts of traffic for a wide variety of workloads such as multicast feeds, voice traffic, video traffic, and healthcare applications
  • Unified Ports support enabling a flexible LAN and SAN deployment through support for Ethernet, Fiber Channel and Fiber Channel over Ethernet connectivity
  • Support for Cisco’s 40G BiDi optics simplifying migration 10 to 40 Gigabit Ethernet speeds while reusing existing 10G cabling
  • Additional versatile TCAM which can be used for:
    • Advanced features such as ACL classifications and QOS
    • Hardware-capable local flow redirect for architectures that require intra-rack traffic to reduce bandwidth

Bringing Together Nexus 2300 Fabric Extenders and Cisco Nexus Parent Switches

The Nexus 2300 Fabric Extenders can be perfectly paired with Nexus 5600 and 6000s as well as Nexus 7000* and 9000* (*future) to provide a network access solution that combines the flexibility and simplified cabling of a top-of-rack (ToR) designs with simplified management and efficient utilization of an end-of-row (EoR) design. This flexible architecture where the parent switch manages all fabric extender configuration lets you deploy and re-deploy fabric extenders throughout your data center with minimal reconfiguration needed, not only helping reduce operational and capital expenditures, but also allowing your data center network to quickly adapt to application, traffic,  or business needs.

I invite you to learn more about the Nexus 2348TQ and other Nexus 2300s at

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Petco Park Stadium Hits a Home Run in High-Tech

Planning to go to the World Series this year? If you are lucky enough to attend, think about using your mobile device to enhance the experience.

Last month, my colleague used an iPad during our team outing at a San Francisco Giants game to watch his favorite team, the St. Louis Cardinals, live via streaming media on Major League Baseball’s MLB.TV app. Thanks to the Cisco network infrastructure and Wi-Fi technology deployed in AT&T Park, he was able to catch both games simultaneously.

Down in Southern California, while unfortunately the San Diego Padres didn’t make the playoffs – one thing is for certain – this season Petco Park Stadium saw a trend with the increase in mobile device usage at games by their fans.

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