The is the next in a series of technical posts relating to EVPN – in particular PBB-EVPN (Provider backbone bridging, Ethernet VPN) and attempts to explain the basic setup, application and problems solved within a very large layer-2 environment. Readers new to EVPN may wish to start with my first post which gives examples of the most basic implementation of regular EVPN;
Regular EVPN without a doubt is the future of MPLS based multi-point layer-2 VPN connectivity, it adds the highly scalable BGP based control-plane, that’s been used to good effect in Layer-3 VPNs for over a decade. It has much better mechanisms for handling BUM (broadcast unknown multicast) traffic and can properly do active-active layer-2 forwarding, and because EVPN PE’s all synchronise their ARP tables with one another – you can design large layer-2/layer-3 networks that stretch across numerous data centres or POPs, and move machines around at layer-2 or layer-3 without having to re-address or re-provision – you can learn how to do this here;
EVPN Inter-VLAN routing + mobility
But like any technology it can never be perfect from day one, EVPN contains more layer-2 and layer-3 functionality than just about any single protocol developed Continue reading
Well, this week is a week of firsts — or at least, firsts in a while. It’s my first time actually posting something new on the blog in a while, and it will also be my first Tech Field Day event in a while.
I’m honored to have been invited back to NFD13, happening on Thursday, 11/17 and Friday, 11/18. I’m very excited to be joining the TFD team for another event! The delegate panel includes some of the most experienced and well respected names in the networking industry (myself excluded, obviously), and the sponsor list is really quite exciting. I’m looking forward to seeing some old friends, and making some new ones along the way.
I really like when NFD events have a mix of focuses (foci?). It keeps the conversation varied and interesting for both the delegates and the audience. For NFD 13, I see several big themes for the sponsor list:
Note: I could be mis-classifying a couple of Continue reading
Reliance & Cisco launch Unlimit, targeting enterprise IoT.
The company has raised $14M since its launch in February.
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Peter Welcher describes toubleshooting a recent issue on core Nexus 7K data center switches.