What Is CIDR? CIDR (Classless Inter-Domain Routing) was introduced in 1993 (RCF 1517) replacing the previous generation of IP address syntax – classful networks. CIDR allowed for more efficient use of IPv4 address space and prefix aggregation, known as route summarization or supernetting. CIDR introduction allowed for: CIDR allows routers to group routes to reduce the bulk of… Read More »
What is CDP? Cisco discovery protocol is a layer 2 protocol (OSI) that operates between Cisco devices such as routers and switches. CDP displays information about the directly connected devices such as device ID, Platform, connected interface, IOS versions, and layer 3 IP address. Key Features of CDP Device Discovery: CDP helps network administrators in discovering Cisco devices… Read More »
This page discusses the importance of setting strong passwords on Cisco routers to ward off intruders. the following are guidelines for creating passwords, suggests using passphrases, and outlines the two Cisco password protection schemes – Type 7 and type 5 encryption. It also offers command examples for password encryption and establishing minimum password length.
Frame Relay – WAN Connection. Frame Relay is a popular high-performance wide area network – WAN protocol that operates at the physical and data link layers of the OSI reference model. Frame relay is a type of WAN connection used to connect one site to many remote sites through a single physical circuit, this operation makes it easy… Read More »
This post explains how to configure BGP using loopback addresses, especially with iBGP. It discusses this configuration within the context of RouterHQ and BranchOffice from AS 556.
