OSPF Network Type

Please also read the previous article  OSPF and Route Summarization– Part II

OSPF has three network types:

• Broadcast networks (Ethernet, Token Ring, FDDI)
• Nonbroadcast multiaccess networks (SMDS, Frame Relay, X.25, Classic IP Over ATM)
• Point-to-point networks (HDLC, PPP)

You can configure an interface as any type you wish.

Broadcast is typically used on networks where broadcast and multicast are supported. The idea is to send out one OSPF multicast that reaches multiple receivers. This can be appropriate with X.25 and Frame Relay if you have a full mesh of PVC’s. Loss of a PVC can cause problems with OSPF broadcast networks, however, since some routers with a common subnet will no longer be able to transmit directly to each other.

If users in the company use facebook, youtube, Instagram, log out from a different modem.
The internet used for the business to log out from another modem.

To perform this operation, you need to create a scenario in a few steps.

1- We need to determine our target ip addresses. On this side, version 6.3x started to accept the Mikrotik domain input together with it. We can specify a domain name in the address list, and these domains automatically resolve the strings.

This day, we’ll see how to think of summarizable address blocks in a slightly different way. And then we’ll see how this all applies to configuring route summarization with OSPF.

Please also read the previous article  OSPF — Part III

Thinking About How Big Blocks of Addresses Are

Let’s start by getting our bearings as far as size of address blocks. A Class C network address is a /24, with subnet mask 255.255.255.0. Let’s draw that as a “basic sized” rectangle, as shown in the figure.

One of the most widely used areas of mikrotik is the use of hotspots. In some cases, hotspot users may need to be shut down automatically or automatically.
For these cases, let’s make a statement with the examples below.
First of all, it is necessary to make sure that the date and time of our mikrotik device are up to date and constantly updated. This plays an important role in the timing of the rule.

Introduction

The OSPF routing protocol is playing an increasingly important role in modern networks. It is a multi-vendor standard. We’ll take a look at OSPF basics in this article.

Running OSPF so your routers can exchange information with NT servers is probably not a Good Thing. I personally don’t want servers sending routing information to my “official routing protocol”, since I’ve seen too many servers with duplicate IP addresses or other oddities. If a server administrator goofs and duplicates the server farm subnet on some workgroup server somewhere else, and it advertises it into your network, you’re in for a serious outage! If your group controls the servers, or if NT servers are acting as low-end routers at remote sites, well, then there’s a reason to run OSPF. I’ll just mention in passing here that OSPF has an authentication feature that allows you to easily exclude any “unofficial” routers from your OSPF Autonomous System (“group of consenting routers”).