Yet Another new BGP NLRI: BGP-LS

Fig.2 BGP-LS

Yes, that’s right, we have another new BGP NLRI: BGP-LS. In this post we will be looking at BGP with Link State (LS) extension which is an integral part of the Carrier SDN strategy. We will look at why we need BGP-LS, its internals and its applications. What I won’t cover is things like do we need SDN?, […]

HTIRW: That Big Number Database in the Sky

As we come close to ending this rather long running series on how the Internet really works (because I’m certain you’re about bored of this series, and ready for me to talk about something else!), I’d like to discuss three more topics I think are really important to the Internet’s operation on a day to […]

NFV and OPNFV: Getting Down to Business at ONS 2015


NFV and OPNFV approaches, experiences and challenges in Service Provider networks is an important area of coverage at the upcoming Open Networking Summit 2015 (ONS2015), the premier SDN and NFV conference, held June 14-18 in Silicon Valley, USA. View the detailed program agenda, distinguished speakers and register now! Use the code PACKETPUSHERS to get a 15% discount for ONS2015 registration and save $240.



In this post we will look at something which is relatively new but not as cool as my previous post on Segment Routing. We will take a look at a new BGP feature called “Accumulated IGP, metric of path to prefix” (RFC 7311 AIGP)  which is an optional non-transitive attribute . A new AIGP TLV was created for this which contains […]