OSPF - Router Switch Blog

OSPF vs EIGRP: A Deep Dive for Enterprise Networks

Posted on July 18, 2025 by Selene Gong | 0 Comments

Selecting the right dynamic routing protocol is a core architectural decision for your enterprise network. While both OSPF and EIGRP are widely used Interior Gateway Protocols (IGPs), their design philosophies,…

Cisco Catalyst 9200 Series-Platform Spec, Licenses, Transition Guide

Posted on March 7, 2019 by RouterSwitch Tech | 0 Comments

The Cisco Catalyst 9200 Series switches are Cisco’s latest addition to the fixed enterprise switching access platform and are built for security, resiliency, and programmability. These switches play an integral…

Layer-3 Switching or Layer-2 Switching?

Posted on February 10, 2014 by RouterSwitch Tech | 0 Comments

Have you ever faced designing a campus network or similar network of hospitals, factories and organizations? How to design a better network? What factors you need to count in? Here…

OSPFv3 vs. OSPFv2 Routing Protocol

Posted on August 8, 2013 by RouterSwitch Tech | 0 Comments

What is OSPF? Watch the video to learn OSPF: This article outlines few comparisons of OSPFv3 and OSPFv2 Routing Protocol. OSPFv3 has few similarities with that of IPv4 version i.e.…

How to Troubleshoot OSPFv3 Frame-Relay?

Posted on August 7, 2013 by RouterSwitch Tech | 0 Comments

Open Shortest Path First (OSPFv3) is a link state protocol that supports IPv6 and as well as IPv4. OSPF version 3 differs from OSPF version 2 for IPv4 as some changes…

Conditional Route Origination in OSPF Domain

Posted on July 31, 2013 by RouterSwitch Tech | 0 Comments

Cisco device uses “default-information originate” statement to generate a default route in OSPF domain. There are two ways to originate default route by using this command: 1) When you configure “default-information originate” under…

How to Troubleshoot and Verifying OSPF Configuration?

Posted on May 15, 2013 by RouterSwitch Tech | 0 Comments

There are several ways you can verify and troubleshoot OSPF configuration and operation, listed below are the necessary command to do this: How to verify OSPF Configuration: Show IP route…

EIGRP on a Cisco ASA Firewall Configuration

Posted on May 14, 2013 by RouterSwitch Tech | 0 Comments

The Cisco Adaptive Security Appliance is an integrated security equipment that can perform a variety of functions like firewall, intrusion prevention, VPN, content security, unified communications, and remote access. Among…

Understanding Different Router Numbers

Posted on February 1, 2013 by RouterSwitch Tech | 0 Comments

Many of the routing protocols implemented in Cisco’s IOS require a number to follow the command that enables the routing protocol in question. For example: “router eigrp 1,” “router bgp…

How to Fix OSPF Split Area with GRE Tunnel?

Posted on November 30, 2012 by RouterSwitch Tech | 0 Comments

‘How to Fix OSPF Split Area with GRE Tunnel?’ Well, here we will share a document of Fixing OSPF Split Area with GRE Tunnel from Cisco Support Community, which tell…

OSPF Areas Types, OSPF Router Types & OSPF Route Types

Posted on November 27, 2012 by RouterSwitch Tech | 0 Comments

OSPF is a link state routing protocol that updates the routing table only when network changes occur, rather than at a predefined interval. OSPF supports variable length subnet masks (VLSM) and route…

How to Configure OSPF on Cisco Routers?

Posted on October 17, 2012 by RouterSwitch Tech | 0 Comments

OSPF (Open Shortest Path First) is a routing protocol developed by Internet Engineering Task Force (IETF). OSPF is standards-based which means it is available on routers by Cisco as well…

How to Troubleshoot OSPF?

Posted on July 31, 2012 by RouterSwitch Tech | 0 Comments

OSPF is one of our more complicated routing protocols, and it can be pretty intimidating, especially at first. But once you have mastered how to configure this Link State Protocol,…

How to Configure IPSEC Encryption with the Cisco IOS?

Posted on July 27, 2012 by RouterSwitch Tech | 0 Comments

How to Configure IPSEC Encryption with the Cisco IOS (site to site VPN tunneling)? The OSPF dynamic routing protocol is probably the most popular LAN routing protocol today. OSPF can…

OSPF, How to Configure OSPF in the Cisco IOS?

Posted on July 19, 2012 by RouterSwitch Tech | 0 Comments

OSPF is an interior gateway protocol that routes Internet Protocol (IP) packets solely within a single routing domain (autonomous system). It gathers link state information from available routers and constructs…

Cisco Routing Quiz for Preparing CCNA Exam

Posted on July 18, 2012 by RouterSwitch Tech | 0 Comments

How to prepare Cisco CCNA Exam? What CCNA topics would be contained while preparing? Some CCNA experts pointed out 7 main CCNA topics (not for the test but for the…