What’s new and exciting with EIGRP (Enhanced Interior Gateway Routing Protocol)? Actually, lots… First a bit a background on EIGRP.
EIGRP is an advanced distance vector routing protocol used extensively by enterprise customers. It is very popular because it is simple to deploy and support. Some major attributes are:
- EIGRP does not mandate many network design requirements and is therefore perceived as “forgiving” and “flexible”. For example, EIGRP does not require support for multiple routing sub-domains or Areas.
- While route summarization is a recommended best practice to minimize route table size, it is optional with EIGRP.
- EIGRP can scale to support thousands of routers in a Hub and Spoke configuration. The Hub and Spoke design is especially popular in WAN networks.
For additional information on EIGRP, please click here. There is also a great BLOG that compares EIGRP and OSPF that I think you will find informative and is posted here.
While EIGRP has a large customer following, some customers have hesitated because of concerns of EIGRP being “proprietary”, which would prevent them from multi-vendor network support. In some cases this has caused customers to design their networks to limit usage of EIGRP, even though they would like to deploy it ubiquitously. One result has been non-optimal network design and traffic flow, resulting from multiple IGP (Interior Gateway Protocol) redistribution points.
That brings me back to what is new and exciting with EIGRP. Read More »
Tags: EIGRP, Enhanced Interior Gateway Protocol, ietf, ietf working group, IGP, Interior Gateway Protocol, ipv4, IPv6, IPv6 deployment, OSPF, WAN, WAN networks
The communications industry has come a long way from fixed, inflexible telephone service optimized for voice to dynamic IP-based connections offering converged voice, data, and video capabilities. Now, both residential and business users are increasingly more mobile and distributed, as are the cloud-based services, applications, and content they want to utilize. Service providers must therefore support a more diverse customer base with more distributed content and applications across multiple geographies, yet still maintain a secure, reliable, and consistent quality of experience regardless of device and physical location.
In the face of greater traffic demands and the risk of becoming lower-margin “commoditized pipes,” network operators must react to three key challenges: Read More »
Tags: Cisco ONE, David Ward, ietf, ONF, Sanjeev Mervana, SDN, standards
”Each success only buys an admission ticket to a more difficult problem.”
-- Henry Kissinger
Following the early successes with network programmability, the natural question that arises is “where do we go form here?” Certainly some good things have been accomplished, but in many ways the real work is just beginning. David Ward just posted some musings on where we go next with programmatic interfaces for the network--its a good read and I encourage you to check it out.
Tags: Cisco ONE, ietf, ONF, SDN, standards
The Internet of Things is a fast growing market where IPv6 will play a central role. Cisco has recently delivered a new series of products with very innovate technologies for the energy market with a number of new technologies, all IPv6 based!
Indeed, the new routing protocol for the Internet of Things, RPL, which has been adopted as an international standard by the IETF (RFC 6550) and CoAP, the lightweight resources management protocol specified by the IETF are both IPv6 protocols. With the increasing number of devices connected to IP networks, IPv6 is undoubtedly the protocol of choice for the Internet of things.
A key example of where this comes to play is in Smart Grids.
Read More »
Tags: ietf, internet of things, IPv6, Itron, Smart Grid
Last week the UN’s Broadband Commission held its fifth meeting to discuss how to extend the broadband Internet to the almost six billion people on the planet who have yet to connect at broadband speeds. A critical component to extending the Internet is the work done by the multi-stakeholder technical community, especially the Internet Engineering Task Force (IETF).
From March 25th through the 30th, the IETF held its 83rd meeting and Cisco was honored to be the host sponsor. Over fourteen hundred attendees, from 56 countries, participated in the meeting which gathered a large open multi-stakeholder community of network designers, engineers, operators, vendors, and researchers concerned with the evolution and smooth operation of the Internet. Technologies previously defined by the IETF, such as IPv6 and DNSSEC, are now at the forefront of efforts to ensure the Internet’s continued growth as a trusted platform of communications and innovation for billions of people around the world. As a result, the Internet has now grown to be essential to the 21st century global economy and a key driver of social development due in large part to the work of the IETF.
As the IETF nears its 30th year, challenges still remain Read More »
Tags: Cisco, dnssec, ietf, Internet freedom, IPv6, mobile internet, Robert Pepper, Service Provider, United Nations Broadband Commission