An IP address is a network layer (Layer 3) address that uniquely identifies a host, including network components and devices, on a TCP/IP network. An IP address is composed of 32 binary…
Category: CCNA Articles
CCNA Articles
Enhanced Interior Gateway Routing Protocol
Enhanced Interior Gateway Routing Protocol – (EIGRP) is a Cisco proprietary routing protocol loosely based on their original IGRP. EIGRP is an advanced distance-vector routing protocol, with optimizations to minimize both the…
Configuring and Verifying the OSPF
There are a few simple commands that are used to configure and troubleshoot a Cisco router configured to use OSPF in a single area and in a multiple area network. The commands…
Open Shortest Path First (OSPF)
Open Shortest Path First (OSPF) is a routing protocol developed for Internet Protocol (IP) networks by the Interior Gateway Protocol (IGP) working group of the Internet Engineering Task Force (IETF). The working…
Link-State Routing
Link-state routing differs from distance-vector routing in that each router knows the exact topology of the network. This reduces the number of bad routing decisions that can be made because every router…
Routing Protocols
There are two types of dynamic routing protocols: Interior Gateway Protocols (IGP) and External Gateway Protocols (EGP). IGPs are used to exchange routing information within an autonomous system (AS), which is a…
Routing Tables
A routing table is a database repository that holds the router’s routing information that represents each possible logical destination network that is known to the router. The entries for major networks are…
How to configure VTP?
Before VLANs can be configured, VTP must be configured. By default, every switch will operate in VTP server mode for the management domain NULL, with no password or secure mode. The following…
VLAN Trunking Protocol (VTP)
Administration of network environments that consists of many interconnected switches is complicated. Cisco has developed a propriety solution to manage VLANs across such networks using the VLAN Trunking Protocol (VTP) to exchange…