Topology


Real-time network and system metrics as a service describes how to use data captured from the network shown above to explore the functionality of sFlow-RT real-time analytics software. This article builds on the previous article to show how knowledge of network topology can be used to enhance analytics, see Topology for documentation.

First, follow the instructions in the previous example and start an instance of sFlow-RT using the captured sFlow.  
curl -O https://raw.githubusercontent.com/sflow-rt/fabric-view/master/demo/topology.json
Then, download the topology file for the example. 
curl -X PUT -H "Content-Type: application/json" -d @topology.json \
http://localhost:8008/topology/json
Install the topology using the sFlow-RT REST API. 
curl http://localhost:8008/topology/json
Retrieve the topology. 
{
 "version": 0,
 "links": {
  "L1": {
   "node2": "spine1",
   "node1": "leaf1",
   "port1": "swp1s0",
   "port2": "swp49"
  },
  "L2": {
   "node2": "spine1",
   "node1": "leaf1",
   "port1": "swp1s1",
   "port2": "swp50"
  },
  "L3": {
   "node2": "spine2",
   "node1": "leaf1",
   "port1": "swp1s2",
   "port2": "swp51"
  },
  "L4": {
   "node2": "spine2",
   "node1": "leaf1",
   "port1": "swp1s3",
   "port2": "swp52"
  },
  "L5": {
   "node2": "spine2",
   "node1": "leaf2",
   "port1": "swp1s0",
   "port2": "swp49"
  },
  "L6": {
   "node2": "spine2",
   "node1": "leaf2",
   "port1": "swp1s1",
   "port2": "swp50"
  },
  "L7": {
   "node2": "spine1",
   "node1": "leaf2",
   "port1": "swp1s2",
   "port2": "swp51"
  },
  "L8": {
   "node2": "spine1",
   "node1": "leaf2",
   "port1": "swp1s3",
   "port2":  Continue reading

HAProxy Bonds with HashiCorp Consul to Extend Automated Service Discovery

Version 2.2 of offers service discovery and native support for the HashiCorp’s Daniel Corbett, head of product, HAProxy Technologies, in a blog post. Through a RESTful HTTP API, HAProxy connects directly to a defined Consul server and ingests the list of services and nodes from a Consul catalog, Corbett later told The New Stack. The API will set off a process that can “define an HAProxy backend and pool of servers to match this catalog and automatically scale up or down nodes/servers on-demand based on changes within the Consul catalog,” Corbett said. Corbett noted in the has also released version 2.3 of HAProxy itself, adding features such as forwarding, prioritizing, and translating of messages sent over the Syslog Protocol on both UDP and TCP, an OpenTracing SPOA, Stats Contexts, SSL/TLS enhancements, an improved cache, and changes in the connection layer that lay the foundation for support for HTTP/3/QUIC. For more information on the HAProxy’s Data Plane API,

Gartner: 2021 IT spending rally could hit $3.9T

Gartner projects worldwide IT spending will total $3.9 trillion in 2021, an increase of 6.2% over 2020 when spending declined a little over 3%.All IT spending segments—from data-center systems to communications services—are forecast to return to growth in 2021, according to Gartner . Enterprise software is expected to have the strongest rebound, 8.8%, as remote work environments are expanded and improved. The devices segment will see the second highest growth in, 8%, and is projected to reach $705.4 billion.To read this article in full, please click here

Gartner: 2021 IT spending rally could hit $3.9T

Gartner projects worldwide IT spending will total $3.9 trillion in 2021, an increase of 6.2% over 2020 when spending declined a little over 3%.All IT spending segments—from data-center systems to communications services—are forecast to return to growth in 2021, according to Gartner . Enterprise software is expected to have the strongest rebound, 8.8%, as remote work environments are expanded and improved. The devices segment will see the second highest growth in, 8%, and is projected to reach $705.4 billion.To read this article in full, please click here

Network Break 317: Citrix Bets The House On SaaS Collaboration; AWS Forks Elasticsearch

Today's Network Break examines Citrix's multi-billion bet on a SaaS collaboration acquisition, a fight over the Elasticsearch project where everyone gets a black eye, Red Hat's sop to everyone angry about CentOS, a pair of dangerous Cisco SD-WAN bugs, and more IT news.

The post Network Break 317: Citrix Bets The House On SaaS Collaboration; AWS Forks Elasticsearch appeared first on Packet Pushers.

How We Ran a Successful Remote Internship Program in 2020

And how we are planning to do it again in 2021…

How We Ran a Successful Remote Internship Program in 2020
How We Ran a Successful Remote Internship Program in 2020

On March 5, I sat in a small conference room with a few key contributors in creating and hiring for the Cloudflare summer intern program. With the possibility of office shutdowns looming, the group discussed what an internship would look like without in-person mentorship. How would the managers cope? How would the interns cope? Would it even be worthwhile? After a few minutes of discussions, we settled on ‘absolutely’. A remote summer internship at Cloudflare would be worthwhile for students, mentors, buddies, and managers alike. After all, Cloudflare is an Internet company and we were ready to trust the Internet with a whole lot more than we had anticipated.

The months leading up to the summer were a blur, all I remember is that we did a lot of planning, interviewing and hiring. And I mean, a lot. On April 2, Matthew Prince announced that Cloudflare would be doubling the size of our 2020 intern class in response to other companies cutting their intern programs all together. Due to these cuts, many talented students lost their opportunities for the summer. We knew we couldn’t hire them all so we Continue reading

Closing in on Equity: Truist EPIC Grant Seeks to Expand Potential in Communities through Broadband Access

The image was shared around the world.­ Two little girls hunched over their laptops on a concrete sidewalk, accessing the free WiFi at a fast-food restaurant in order to complete their schoolwork. It was a bleak reminder of the stark digital divide in the United States, where millions are excluded from the benefits of affordable, reliable broadband service. In urban, suburban, and rural areas alike, 42 million Americans – 12% of the population – are on the wrong side of this divide, exacerbating inequalities in access to education, employment, and healthcare.

Conquering this digital divide calls for meaningful solutions, vision, and commitment. Truist has stepped up to the plate with an innovative new grant program that puts the power of connection in the hands of the people who stand to benefit from it. For the over 15 million Americans across the Southeast United States who lack adequate Internet access, broadband coverage cannot wait.

In partnership with Truist, the Internet Society is proud to announce the launch of the Truist EPIC Grant. The program is aimed at funding community-backed broadband – solutions that can help alleviate socioeconomic disparities exacerbated by lack of access.

The Truist EPIC Grant offers eligible Continue reading

Hot network certifications: Multi-skill certs to dominate 2021

In March, IT professional association CompTIA nervously pondered what affect COVID-19 and work-from-home mandates would have on its members and its core mission of delivering training and vendor-neutral IT certifications. "When you have this kind of upheaval, what does that mean in terms of education?" says James Stanger, chief technology evangelist at CompTIA. Surely it would take a back seat to more pressing business issues. Turns out, certifications have "massively continued" their upward trend, he says. Learn more about tech trends and certifications:To read this article in full, please click here

Juniper to MikroTik – BGP commands

About the Juniper to MikroTik series

In the world of network engineering, learning a new syntax for a NOS can be daunting if you need a specific config quickly.  Juniper is a popular option for service providers/data centers and is widely deployed across the world. 

This is a continuation of the Rosetta stone for network operating systems series.  We’ll be working through several protocols over series of posts to help you quickly move between different environments. 

While many commands have almost the exact same information, others are as close as possible.  Since there isn’t always an exact match, sometimes you may have to run two or three commands to get the information needed. 

Using EVE-NG for testing

We conducted all of this testing utilizing EVE-NG and the topology seen below. 

Juniper CommandMikroTik Command
show bgp summaryrouting bgp peer print brief
show bgp neighborrouting bgp peer print status
show route advertising-protocol bgp 172.31.254.2routing bgp advertisements print peer=peer_name
show route receive-protocol bgp 172.31.254.2ip route print where received-from=peer_name
show route protocol bgpip route print where bgp=yes
clear bgp neighbor 172.31.254.2 soft-inbound Continue reading

Learning Elixir

Elixir is a dynamic functional programming language that runs on the Erlang virtual machine. In this post I will outline my reasoning for learning Elixir and document the resources used in the process. I will update the Books, Videos and Blogs section as I move through the learning...

Worth Reading: Cloud Complexity Lies

Anyone who spent some time reading cloud providers’ documentation instead of watching slide decks or vendor keynotes knows that setting up infrastructure in a public cloud is not much simpler than doing it on-premises. You will outsource hardware management (installations, upgrades, replacements…) and might deal with an orchestration system provisioning services instead of configuring individual devices, but you still have to make the same decisions, and take the same set of responsibilities.

Obviously that doesn’t look good in a vendor slide deck, so don’t expect them to tell you the gory details (and when they start talking about the power of declarative API you know you have a winner)… but every now and then someone decides to point out the state of emperor’s clothes, this time Gerben Wierda in his The many lies about reducing complexity part 2: Cloud.

For public cloud networking details, check out our cloud webinars and online course.

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