Category Archives: IP Addressing

Understanding Most Common Layer 2 Network Attacks.

What Are Layer 2 Network Attacks? Layer 2 network attacks target the Data Link layer (Layer 2) of the OSI (Open Systems Interconnection) model. This layer is responsible for node-to-node data transfer and controls the flow of data between two directly connected nodes. It also handles error checking and frames synchronization. Common Layer 2 network components include switches,… Read More »

VLAN Error#1 Native VLAN Mismatches.

What Is Native VLANs? A Native VLAN is a term used in networking, mainly in the context of VLAN tagging which is a part of the IEEE 802.1Q standard. In a VLAN setup, multiple virtual networks are configured on a single physical network infrastructure to segment traffic for efficiency and security purposes. The Native VLAN plays a special… Read More »

iBGP Explained with Example.

What Is iBGP? Interior Border Gateway Protocol (iBGP) is a part of the Border Gateway Protocol (BGP) family, which is used for exchanging routing information within a single Autonomous System (AS). An AS is essentially a large network or group of networks under a common administration, often belonging to an organization or an internet service provider. Here are… Read More »

InterVLAN Routing Explained with Examples.

What Is InterVLAN? We define inter-VLAN routing as a process of forwarding network traffic from one VLAN to another VLAN using a router or layer 3 device. A VLAN is a sub-group within a network, which partitions and isolates network traffic at the data link layer (Layer 2) of the OSI model. VLANs are used to segment networks for… Read More »

IP Address Route Summary Explained with Examples.

What is IP Address Route Summary? IP Address route summation; which is also known as route aggregation, is the process routers use in advertising volume or set of IP addresses as a single address with a shorter subnet mask (CIDR). Route summarization allows engineers to configure a routing protocol so that it advertises one route, replacing several smaller… Read More »