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"The network is vast and infinite" – Motoko Kusanagi

  • Networking
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Network Topology Visualization #4 – Interactive Map Using D3 Javascript Library

vmWare vRealize Automation (with embedded vRO) – Full Example of Custom Resources for Executing Ansible Playbooks from Blueprints

visualization3_thumbnails

Network Topology Visualization #3 – Exploring other D3 visualization options for a DataCenter

Mischief-Makers LLDP map

[mini-update] Network Topology Visualization #2 – Using SNMP as data source and enhanced visuals

Autopilot for Elite Dangerous using OpenCV and thoughts on CV enabled bots in visual-to-keyboard loop

Network Topology Visualization – Example of Using LLDP Neighborships, NETCONF and little Python/Javascript

NETCONF tutorial thumbnail

HP Networking/Comware NETCONF interface quick tutorial (using python’s ncclient and pyhpecw7)

[minipost] Protecting SSH on Mikrotik with 3-strike SSH ban using only firewall rules

Example of private VLAN isolation across Virtual and Physical servers using ESX/dvSwitch and HP Networking Comware switches

HPE’s DCN / Nuage SDN – Part 3 – REST API introduction

[minipost] Capturing bidirectional traffic of virtual machine (VMs) on vmWare ESX 6.x

HPE’s DCN / Nuage SDN – Part 2 – First Steps Creating Virtual/Overlay Customer Network

HPE’s DCN / Nuage SDN – Part 1 – Introduction and LAB Installation Tutorial

Tutorial for small Hadoop cloud cluster LAB using virtual machines and compiling/running first “Hello World” Map-Reduce example project

Pingonyou.com - Beta 2.0 is alive!

Ping on you! – Beta 2.0 is online

[minipost]Quick LAB/config example for IPv6 BGP between HP Networking Comware v5 andCisco

Ping on You! – small weekend web/CGI project

[minipost] Windows partition editing with diskpart

Checkpoint Firewall CLI tool “dbedit” and quick lab examples

Soviet Mi-24V Hind E, 1/72 scale

Tutorial for creating first external SDN application for HP SDN VAN controller – Part 3/3: “Node Cutter” SDN application in perl with web interface

Tutorial for creating first external SDN application for HP SDN VAN controller – Part 2/3: Influencing Flows via cURL commands

Tutorial for creating first external SDN application for HP SDN VAN controller – Part 1/3: LAB creation and REST API introduction

email tutorial Thumbnail

Tutorial: Email server for a small company – including IMAP for mobiles, SPF and DKIM

Category: CCIE

Quick Summary for IPv6 Theory

Quick Summary for IPv6 Theory

Peter Havrila October 16, 2012
Networking Theory Theory Notes

This is a dynamically expanded article where I will collect basic theory information about IPv6 for quick reference to myself. This article will expand as I encounter new information about … Read More

IPSec Peer Backup Behavior in Asymmetric Routing Scenario

IPSec Peer Backup Behavior in Asymmetric Routing Scenario

Peter Havrila January 5, 2012
CCIE Networking Theory

IPSec Peer Backup feature is a name that is not really widely know to all the cisco guys out there because it is mostly hidden behind the ability to put … Read More

[minipost] CEF FIB vs. Routing Table, or when a Routing Table lies

[minipost] CEF FIB vs. Routing Table, or when a Routing Table lies

Peter Havrila December 21, 2011
CCIE Networking

What if I were to tell you that there exist a situation where the router will NOT route according to the routing table … well, at least not for a … Read More

OSPF Split-Brain Problem and Designated Router (DR) Election

OSPF Split-Brain Problem and Designated Router (DR) Election

Peter Havrila December 12, 2011
CCIE Networking Theory

All the CCNA/CCNP guys out there once learned from their study that once an OSPF router is elected as Designated Router(DR), he will not willingly loose this status to a … Read More

Cisco BGP Timers re-Explained

Cisco BGP Timers re-Explained

Peter Havrila December 8, 2011
CCIE Cisco Networking

In this post, let me get some summary of Cisco BGP timers that you can find useful in real life as they reflect basic convergence and route propagation throughout a … Read More

6 Comments on Cisco BGP Timers re-Explained
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Archive

10 Latest Articles

  • Network Topology Visualization #4 – Interactive Map Using D3 Javascript Library May 20, 2025
  • vmWare vRealize Automation (with embedded vRO) – Full Example of Custom Resources for Executing Ansible Playbooks from Blueprints October 26, 2021
  • Network Topology Visualization #3 – Exploring other D3 visualization options for a DataCenter July 11, 2021
  • [mini-update] Network Topology Visualization #2 – Using SNMP as data source and enhanced visuals September 17, 2019
  • Autopilot for Elite Dangerous using OpenCV and thoughts on CV enabled bots in visual-to-keyboard loop August 11, 2018
  • Network Topology Visualization – Example of Using LLDP Neighborships, NETCONF and little Python/Javascript December 12, 2017
  • HP Networking/Comware NETCONF interface quick tutorial (using python’s ncclient and pyhpecw7) December 11, 2017
  • [minipost] Protecting SSH on Mikrotik with 3-strike SSH ban using only firewall rules September 9, 2017
  • Example of private VLAN isolation across Virtual and Physical servers using ESX/dvSwitch and HP Networking Comware switches May 26, 2017
  • HPE’s DCN / Nuage SDN – Part 3 – REST API introduction December 26, 2016
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