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Networking Basics

ISDN Protocol Components

ISDN-protocol-components

This topic is an overview of the ISDN technology components, which are relevant to the Cisco network engineer and network administrators. ISDN is a layer 3 technology that is based on the following protocols: Q.931 LAPD So ISDN is a ... Read More »

E1 PRI, T1 PRI and ISDN BRI

In this post, we will understand the nuances between the following concepts: TDM links and interfaces T1, T1 PRI, E1, E1 PRI, ISDN BRI E1 and T1 E1 and T1 are two TDM technologies; they leverage Time Division  Multiplexing to ... Read More »

OSPF Route Filtering

ospf-route-filtering-f

In this article, we are going to learn how to filter routes in OSPF. We will learn how to do that within an area, and between areas. Network topology We will use the following topology. Everything is done in GNS3. I ... Read More »

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