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UDP Protocol - Header
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Suggested Articles:
The OSI Model
The OSI Model: Layer 6 - Presentation Layer
The Presentation Layer gets its name from its purpose: It presents data to the Application layer. It's basically a translator and provides coding and…
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Measuring network performance has always been a difficult and unclear task, mainly because most engineers and administrators are unsure which approac…
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In our previous article we explained how a Netflow Analyzer can help you gain visibility into your user traffic, application traffic and data flows w…
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This article will cover the basics of Netflow, including its use cases, Netflow supported devices, Netflow history, and variants. We’ll also dive int…
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VLAN Networks
VLANs - IEEE 802.1q Trunk Link Protocol Analysis
While the VLAN Tagging article briefly covered the IEEE 802.1q protocol this article will continue building upon it by further analyzing the IEEE 802.1q T…
VLAN Networks
VLAN Security - Making the Most of VLANs
It's easy to see why virtual LANs have become extremely popular on networks of all sizes. In practical terms, multiple VLANs are pretty much the same as h…
VLAN Networks
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Dynamic VLANs were introduced to grant the flexibility and complexity(!) that Static VLANs did not provide. Dynamic VLANs are quite rare because of their…
VLAN Networks
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Routing
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This is the thrid article of our 6-part OSPF series (see below) that describes how OSPF routers perform neighbor relationship and adjacency. We’ll examine…
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Routed Protocols
We all understand that TCP/IP, IPX-SPX are protocols which are used in a Local Area Network (LAN) so computers can communicate between with each other and…
Routing
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Hybrid routing protocols are a combination of distance-vector and link-state routing protocols, and are used to provide a more efficient and scalabl…
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This article covers basic OSPF concepts and operation. We explain how OSPF works, how OSPF tables are built on an OSPF-enabled router and their purpose (N…
Cisco Switches
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This article shows how to reset a password on a Cisco Catalyst 3750-X (stacked or single unit) and Cisco Catalyst 3560-x switch without losing its startup…
Cisco Routers
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For years now, Cisco has been developing its Security Device Manager (SDM) software. This web-based software is designed to help the less experienced user…
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In the rush to keep pace with the many challenges facing today’s organizations, all too often networking teams end up adopting practices and processes tha…
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