A few months back we announced how Hrvatski Telekom, Croatia’s largest telecommunications company, is using a Cisco’s end-to-end solution for its advanced TeraStream cloud-enabled Internet Protocol (IP) architecture. Operated by Deutsche Telekom subsidiary Hrvatski Telekom (T-HT), it’s initially providing broadband services to residential users in the Zagreb area of Croatia.
Cisco and Deutsche Telekom have Read More »
Tags: ASR9000, Cisco, deutsche telekom, DT, Hrvatski Telekom, Ian Ferrer, IPv6, ONE, onePK, SDN, Service Provider, TeraStream
Segment routing (SR) is a concept that’s been working its way through the IETF standards process but is finally becoming ready for real world deployment. It’s a network technology that provides enhanced packet forwarding behavior while minimizing the need for maintaining awareness of mass volumes of network state. SR satisfies essential requirements for application-enabled routing in software defined networks, including the ability to provide strict network performance guarantees, efficient use of network resources and very high scalability for application-based transactions. Segment Routing relies on a small number of extensions to IS-IS and OSPF and can operate with an MPLS or an IPv6 data plane and integrates with the rich multi-service capabilities of MPLS such as L3VPN, VPWS, VPLS, E-VPN, etc.
With Read More »
Tags: Cisco, Clarence Filsfils, IPv6, mpls, ONE, onePK, SDN, segment routing, Service Provider
This week is the industry’s leading IPv6 event, the World IPv6 Congress in Paris, France. Cisco Fellow Mark Townsley delivered the keynote again, this time with a theme around the “Mobile Business Case for IPv6”. What’s exciting is that in the mere 18 months since the World IPv6 Launch we’re already seeing significant adoption of the larger scale address protocol. Mark in fact specifically cites how Verizon Wireless is already sending 30% of its traffic to search engine giant Google over IPv6. Other wireless operators are going straight to IPv6 for 4G and LTE deployments as well. Read More »
Tags: Cisco, Gina Nienaber, Internet of Everything, IoE, IPv6, Mark Townsley, Service Provider, World Congress
It was not that long ago that whenever I read an article about IPv6, it usually discussed how the IPv4 Address depletion in other countries. At that time, the adoption of IPv6 was coming from other countries that where the v4 address space was depleted, the US Government, or Service Provider. Well fast forward only a few years and you can include Enterprise Networks in that mix.
Driving this IPv6 train for enterprise networks is wireless technology and the enabling by-product, BYOD. Wireless technology, in particular, Wi-Fi has grown from a toy to a requirement in most businesses today. We have moved from 802.11b which gave you a max datarate of a paltry 11Mbps to 802.11n to a max datarate of 450Mbps if you currently deploy the Aironet 3600 Access Point that supports 4×4 MIMO; if not, it’s a max datarate of 300Mbps. Never mind the fact that we will soon see the Wave 1 version of 802.11ac will have a datarate of 1.3Gbps and Oh BTW, Wave 2 promises a scorching datarate of 6.9Gbps!
Read More »
Tags: 802.11, access point, Aironet, bring your own device, byod, Enterprise, government, ipv4, IPv6, mbps, mimo, network, networking, Service Provider, wireless, wireless technology
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