EVPN Learning Ressources – WIP

Table of Contents





Routing Daemons

Linux Hypervisors

Commercial Vendors

Blog Posts

Side notes

VXLAN Packet

PBB Packet Format

Proactive Network Configuration Validation with Batfish – NANOG (2015) Presentation

Proactive Network Configuration Validation with Batfish

Batfish is an open-source network configuration analysis tool in active development produced jointly by researchers at University of California, Los Angeles; University of Southern California; and Microsoft Research. Though its individual modules have various applications, its primary purpose is to detect bugs in network configurations. Batfish takes as input a set of network configurations, and an environment, which consists of a set of (in)active links and a set of external BGP advertisements. Users are able to ask customized queries about the control plane using Batfish’s domain-specific query language e.g. whether all loopback addresses are being advertised into OSPF, or whether all route policies attached to eBGP neighbors apply a particular community to incoming routes. Batfish also is able to compute the convergent data plane for a network, which provides further query facilities. Given the data plane, users can employ an off-the-shelf data plane checker or use Batfish’s data-plane queries to check common properties such as reachability/black holes, loops, etc, as well as novel properties (introduced at NSDI’15) regarding equivalence of multipath routes, fault-tolerance, and unique delegation of customer address space, with more to come.

Nanog76: IPv4 prisoner


Video will be up in a week, I’m sure.

ISPs are motivated to promote IPv6 to avoid CGN.

Content providers are motivated to promote IPv6 because it’s faster, and faster means (they say) they increase user engagement/sales/ad views.

So e-commerce sites should dual-stack and only sell IPv6 capable equipment. Maybe ISPs can test it for them.

If everyone works together, everyone can make more money. Complementary blog post with more detail at www.retevia.net/prisoner