Every now and then, there are waves of technology that threaten to make the previous generation of technology obsolete. There has been a lot of talk about a technique called “serverless” for writing apps. The idea is to deploy your application as a series of functions, which are called on-demand when they need to be run. You don’t need to worry about managing servers, and these functions scale as much as you need, because they are called on-demand and run on a cluster.
But serverless doesn’t mean there is no Docker – in fact, Docker is serverless. You can use Docker to containerize these functions, then run them on-demand on a Swarm. Serverless is a technique for building distributed apps and Docker is the perfect platform for building them on.
So how might we write applications like this? Let’s take our example a voting application consisting of 5 services:

This consists of:
The background processing of votes is a very easy target for conversion to a serverless architecture. In the voting app, we can run a Continue reading
AT&T is starting to see benefits from Domain 2.0.
So this is the fourth blog on EVPN, the previous blogs covered the following topics:
This post will cover the ability of EVPN to provide all-active multi-homing for layer-2 traffic, where the topology contains two different active PE routers, connecting to a switch via a LAG, the setup is similar to the previous labs. Due to some restrictions and in the interests of simplicity, this lab will cover all-active multi-homing for a single VLAN only, (VLAN 100 in this case) consider the network topology:

The topology and general connectivity is the same as the other previous examples, the two big differences are that only VLAN 100 is present here and the connectivity between MX-1 and MX-2 is now using MC-LAG.
The first consideration that needs to be made when running EVPN in all-active mode, is that it must connect to the upstream devices using some sort of LAG, or MC-LAG – consider the wording from the RFC 7432:
https://tools.ietf.org/html/rfc7432#section-14.1.2
IT skills are becoming more demanding.
I'm back to installing servers/network in closets. Do we need data centers anymore ?
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It builds on Docker Hub.
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