The Cisco “reload” command is used on almost all IOS Cisco networking devices (routers, switches etc) to restart (or reboot) the appliance. This command might seem very basic but it has some interesting practical applications that we will see later in this article. Basic Command Usage As we have said above, the basic usage of this […]
What will happen to Internet Traffic by 2020 – Some Statistics
On June 7, 2016, Cisco released the “Cisco Visual Networking Index™ (VNI) Complete Forecast for 2015 to 2020” where several notable internet traffic statistics are predicted by the networking giant. I have summarized the forecast document and presenting you below the most important stats and predictions about Internet traffic, Internet usage etc: Global IP traffic […]
How to Configure Cisco SPAN – RSPAN – ERSPAN (With Configuration Commands)
Having visibility in the traffic flowing through your network from specific hosts is an excellent way to troubleshoot problems or gather useful information and data. Cisco switches offer the capability to copy packets from specific ports or VLANs and send them to other ports for capturing and analyzing. The traffic can be captured and analyzed […]
Configuring Cisco IP SLA (IP Service Level Agreement Tutorial)
Getting back to the basics! Sometimes less is more and with this simple IOS IP SLA configuration tutorial this is true. Cisco IOS IP SLA (Service Level Agreement) is a tool that can be used to generate synthetic network traffic used for network management. SLA can be configured to send TCP connects, ICMP or even […]
Cisco Packet Tracer Version 5.3
The Cisco Packet Tracer is a tool for learning and simulating networks interactively for instructors and students of Cisco CCNA. This e-learning software is offered as part of the Cisco Networking Academy. This tool allows users to create network topologies, configure devices, inject packets, and simulate a network with multiple visual representations. Packet Tracer focuses […]
Cisco Vs Juniper
I have found the following article at pcworld.com and thought about sharing with you. Its a good overall comparison between Cisco and Juniper, the two biggest players in the networking arena. It’s been an ongoing debate for much of the last 14 years – Cisco or Juniper? Increasingly, that argument will hinge on which router […]
This is the new domain home for Cisco-Tips
Hello there, this is Harris Andrea. Today I have redirected my older blog Cisco-Tips.com to its new domain home which is the website you are viewing now (NetworksTraining.com). Please update your bookmarks accordingly. I have configured a permanent 301 domain redirect (using .htaccess file) for the whole cisco-tips.com website and I have moved the old […]
Cisco Aggregation Services Router 9000-ASR 9000
The ASR 9000 has 6 times more capacity and is 4 times faster than any other router in the same category. It is able to transmit data at a rate of 6.4 terabits per second. What does this mean? It means that it is capable of transmitting 200 dvd video / sec or 250.000 mp3s […]
Forwarding a DHCP Request using Cisco ip helper-address command
DHCP, as we all know, is a broadcast protocol (shame on you if you don’t know that already :) !!) which normally works only on the same Layer 2 broadcast domain. Does this mean that you need to have your DHCP Server connected to the same network subnet as the DHCP clients? If this was […]
Cisco ACE Web Application Firewall Appliance
I was reading a security statistics report the other day and it seems that web vulnerabilities take up the majority of the pie. SQL injections, Cross Site Scripting, Code injections etc are found everywhere in web applications. Unfortunately secure coding (not only for HTML but for any software application) is not yet widely adopted, so […]
Cisco IOS jumps from version 12 to version 15
The latest Cisco IOS version was 12.4 until recently when Cisco IOS version 15.0 was introduced. Have you noticed the jump from version 12 to 15? Do you wonder why versions 13 and 14 were skipped? Well, rumors say that Cisco avoided those version numbers because 13 is considered unlucky in the Western Culture and […]
Cisco Launches SA 500 Series Security Appliance
Cisco announced a new security appliance model, the SA500 series, which is focused for the small business market. Cisco tried to fill the gap of the UTM (Unified Threat Management) appliance market in which other competitors (such as Fortinet, Checkpoint etc) were already ahead. Following the philosophy of the UTM appliance, the SA500 offers an […]
BlackHat 2009 Router Exploitation Presentation
I was reading an interesting presentation the other day, taken from BlackHat USA 2009 Briefings from Felix Lindner, and thought about sharing the main points here. The guy presents a reasonable analysis of the current situation regarding Router security and exploitation. As we all know, routers are exploitable of course, but not as easy as […]