Views: 585The phrase net neutrality is often summarized as the principle that all Internet traffic should be treated equally. That definition is appealing, but technically lacking and incomplete. Modern networks do not—and often should not—treat every packet identically. The subject itself is not new around here and you can view my other posts on the
Views: 26,2402-Day Instructor-Led Hands-On Lab CourseAvailable through Web-Based Live Delivery or On-Site DeliveryMinimum 10 Students – Maximum 16 Students What Students are saying about this class: Course Description Voice over IP problems can involve signaling, media, network performance, configuration, interoperability, or some combination of all of them. Wireshark gives technicians and engineers the packet-level evidence
CSI-HO-020-D – Explore Packet Analysis with Wireshark – Voice Edition – 2 Day Read More »
Views: 22,378Advanced OSPF, IPv4 Quality of Service, Network Security, IPSec, Encryption, and TCP Analysis 2.5-Day Instructor Led Hands-On Lab ClassAvailable in either Web-Based Delivery or On-Site DeliveryMinimum 10 students – Maximum 16 students Course Description Understanding the fundamentals of Ethernet, IPv4, TCP/IP, addressing, subnetting, and routing is essential—but network engineers and technicians responsible for operating
CSI-HO-006 – Hands-On Advanced IP Networks/Protocols Read More »
Views: 3,564When learning Cisco IOS, students often ask, what happens if there is conflicting information? Cisco IOS order of operations plays an important role in how a router processes traffic and makes choices, especially if there are two possible answers. If you’re simply using the most basic features of the router, chances are good that
Cisco IOS Order of Operations for NAT and QoS Read More »
Views: 2,226CAR — or “rate limiting” — is a method for managing unwanted traffic on your network and making sure it doesn’t affect important traffic. Essentially, CAR controls the bandwidth of a certain type of traffic, and an access control list (ACL) defines which traffic it controls. Once you’ve created the ACL, you can set
Committed Access Rate in QoS with Cisco IOS Read More »
Views: 2,046In our high level overview of QoS we stated that configuring QoS can be complicated. Cisco developed NBAR as the QoS ‘autopilot’ as one solution to this problem. More recently, Cisco has developed something called AutoQoS, which also configures QoS settings for you. You can use AutoQoS to a)create policies based on real-time traffic
Views: 2,325In this How To we will introduce the concepts of Quality of Service or QoS (kwas). Managing QoS is an important process and skill that everyone who runs a network needs to understand. We will introduce you to QoS principles at a high level. You will find details in other How To’s. First, lets
QoS Fundamentals in Cisco IOS Read More »
Views: 2,073What is NBAR? NBAR is a powerful packet filtering/identification/firewall that you may already have installed on your Cisco router. For a list of what NBAR can detect look here. NBAR is also what we call Cisco’s “autopilot” for QoS. It has been in IOS since ver. 12.0 and has been continually updated with recognition
NBAR Explained in Cisco IOS Read More »
Views: 12,730Practical IP Quality of Service, Classification, Policing, Shaping, Queuing, and Scheduling 1-Day Instructor-Led Hands-On Lab ClassAvailable in either Web-Based Delivery or On-Site DeliveryMinimum 10 students – Maximum 16 students Course Description Quality of Service becomes important whenever different types of network traffic compete for limited bandwidth, delay-sensitive applications must be protected, or network operators
CSI-HO-015 – Hands-On Quality of Service (QoS) Read More »
Views: 1,511This article was originally published on May 21st, 1999! I was working several months ago on a network design consulting effort which underscored the main point of this article – that bandwidth is the simplest cure to all networking problems, and in particular to Quality of Service (QoS). I had spent weeks looking at
Is Bandwidth the QoS Magic Pill? Read More »
Views: 1,759This article was originally published on January 21st, 1999! Read this carefully. I’m going to explain to you that there is no Quality of Service (QoS) today with packet-based technologies. “No QoS?” you ask? Nope. Not even with ATM. Not yet. Let’s begin with addressing the two sides of the packet technology debate and
There is No Network Quality of Service! (in 1999) Read More »
