todd lammle

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Dynamic routing with RIP

The Routing Information Protocol RIP was the first dynamic routing protocol to be used in an internetwork, so it was created and used primarily with UNIX hosts for the purpose of sharing routing information.In my last Daily Drill Down, “Configuring static and default routing,” I covered both default and static...

Tags: Routers & switches, Network technology, NETWORKING, Routing Information Protocol, router

Technical articles 2003-11-19

Subnet a Class A network with ease

Class A subnetting is a form of network addressing typically reserved for the government and larger institutions. It can have a large number of unique nodes, which can prove quite a challenge. Here, Todd Lammle offers a simple approach to this addressing.The Class A networking address scheme is designed for...

Tags: NETWORKING, Todd Lammle, subnet, Class-A, network

Technical articles 2002-03-28

Frame relay: The straightforward approach

Corporate headquarters has told you to connect the New York City and Los Angeles offices in 24 hours. Panic? No need to when you have frame relay. In this Daily Drill Down, Todd Lammle shows you how to get your bicoastal offices together in no time flat.In this Daily Drill...

Tags: Network technology, NETWORKING, Routers & switches, Todd Lammle, frame relay, Corp, router

Technical articles 2001-11-15

Configure IT Quick: Configure EIGRP with IP and IPX on Cisco routers

Learn how to configure EIGRPEIGRP is sometimes referred to as a hybrid routing protocol, but Cisco calls it an advanced distance vector routing protocol. Cisco makes this reference primarily due to the way EIGRP handles convergence. With EIGRP, convergence, the process in which all routers share and process the same...

Tags: Routers & switches, Network technology, NETWORKING, IPX, Cisco Router, Todd Lammle, information technology, Cisco Systems Inc., EIGRP, router, IGRP, IP, network

Technical articles 2001-10-16

Configuring OSPF with multiple areas

If you need to give your routers' routing tables a rest, take a look at EIGRP. Oh, but wait. Your network has routers from different vendors so you can't use EIGRP! Never fear, Todd Lammle is here to help you configure OSPF.Open Shortest Path First OSPF is a fast, strong...

Tags: Routers & switches, NETWORKING, Network technology, Todd Lammle, Open Shortest Path First, router, EIGRP, network

Technical articles 2001-09-13

Summarizing IP routes with EIGRP and OSPF

Need to optimize your routers? One great way is through summarization. In this Daily Drill Down, Todd Lammle uses EIGRP and OSPF to tweak your routers.Summarizing sometimes referred to as supernetting is the process of combining multiple routes listed in a routing table and listing them as one route. The...

Tags: Routers & switches, NETWORKING, Network technology, Todd Lammle, IP, Open Shortest Path First, router, network, summarization

Technical articles 2001-08-16

Getting to know Open Shortest Path First (OSPF)

If you administer a large network with a variety of routers from multiple manufacturers, then OSPF is your best option as a routing protocol. Let Todd Lammle explain.This Daily Drill Down will introduce you to OSPF and how to configure basic OSPF in an internetwork. OSPF is a true Link...

Tags: Routers & switches, Network technology, Todd Lammle, Open Shortest Path First, router, Designated Router

Technical articles 2001-08-09

Configuring IGRP routing with redistribution

The Interior Gateway Routing Protocol IGRP was designed to replace RIP in small to midsize networks. Of course, like RIP, it has its drawbacks. In this Daily Drill Down, Todd Lammle explains how to configure and use the IGRP protocol.We finished talking about RIP in my last Daily Drill Down,...

Tags: Routers & switches, Network technology, NETWORKING, Todd Lammle, IGRP, router

Technical articles 2001-07-19

Getting fundamental with frame relay

If you need to expand your WAN's capabilities, then more than likely you are going to be employing the services of frame relay. Let Todd Lammle ease your burden and explain where frame relay came from and how it is best used.Frame relay was designed to be a fast, reliable...

Tags: Network technology, NETWORKING, WANs, Todd Lammle, frame relay, X.25, WAN, network

Technical articles 2001-07-18

Configuring static and default routing

You may know how a packet traverses the internetwork via IP routing, but how do routers manage to help in this process? Routing tables aid routers in knowing exactly how to forward packets throughout your network. Todd Lammle is here to explain this process to you.My last Daily Drill Down,...

Tags: Routers & switches, Network technology, NETWORKING, Todd Lammle, router, network, internetwork, IP

Technical articles 2001-07-12

Getting to know Integrated Services Digital Network (ISDN)

If you're a bit confused as to just what the specifics are that make up ISDN, never fear! Todd Lammle is here to detail all the specs of ISDN services.ISDN was designed and implemented to be an upgrade from slower analog modems. The first difference between ISDN and analog modems...

Tags: Broadband Internet, Todd Lammle, network, ISDN, NT1

Technical articles 2001-07-11

IP routing in 40 short steps

To many, the idea of IP routing is a total mystery. For those of you who fall into this category, never fear. In 40 short steps, you can understand IP routing like you never thought possible.This Daily Drill Down will zoom in on the principle of moving packets of data...

Tags: Network technology, NETWORKING, Routers & switches, Todd Lammle, HostB, IP, internetwork, HostA, router, network

Technical articles 2001-07-10

On the road to CCNA: This pain called class

The Cisco Certified Network Associate class can be trying for those out of touch with the classroom. TechRepublic's own Jack Wallen, Jr. experiences this class and reports to you his tips for making the process a lot less painful.In my previous installment, I filled you in on key elements you...

Tags: Jack Wallen, Jr., CCNA, instructor, CCNA class

Technical articles 2001-02-12

Subnetting a Class B network address

Subnetting a Class B network can involve some serious thought! As a network administrator, you'll have to know it and know it well. Todd Lammle walks you through clear instructions and simple examples to help you learn this skill.In my last Daily Drill Down, we went step-by-step through subnetting a...

Tags: NETWORKING, Table 1, Todd Lammle, subnet, network address, Class C, Class B, network, Class B network address, Class B subnet, Class C network address, Daily Drill-Down

Technical articles 2001-05-29

Subnetting a Class C network address

Subnetting a Class C network can be a tricky process to master. From MCSE to CCNA to RHCE to CNE, you'll have to know it and know it well. Todd Lammle walks you through clear instructions and step-by-step examples to help you learn this skill.Let’s face it, some day you...

Tags: NETWORKING, Todd Lammle, subnet, network, Class C, IP

Technical articles 2001-05-24

Configuring the Cisco Catalyst 1900 switch

The Cisco Catalyst 1900 switch is a very useful tool for small workgroups or access closets needing switched 10-Mbps ports. In this Daily Feature, Todd Lammle shows you how they are configured.The Cisco Catalyst 1900 switch was developed from the old Kalpano switch and is used for small workgroups or...

Tags: Network technology, NETWORKING, Todd Lammle, Cisco Catalyst, Ethernet, Catalyst CLI, Cisco Catalyst 1900, User Interface Menu, Cisco Systems Inc.

Technical articles 2001-05-21

Using the Cisco ip unnumbered command

Connecting point-to-point serial WAN links between two Cisco routers can actually be achieved without the use of IP addresses! How? Todd Lammle explains this mystery to all.If you have multiple WAN links, but the availability of usable subnets is running low, then Cisco has a proprietary solution for you. The...

Tags: Network technology, NETWORKING, Todd Lammle, Cisco Systems Inc., IP, subnet, network, IP address, router

Technical articles 2001-05-16

Getting to know your IP addresses

Knowing how an IP address identifies a host on a network can be confusing. Before you begin calculating various addresses, you should know the fundamentals of IP addressing. Todd Lammle describes this concept in an easy-to-understand fashion.The Internet Protocol IP was developed in the 1960s to provide packet fragmentation and...

Tags: Network technology, NETWORKING, Todd Lammle, IP, IP address, network

Technical articles 2001-05-03

Setting passwords on a Cisco router

Network security relies heavily on passwords. Cisco routers use passwords to ensure that only "trusted" users can perform certain services. In this Daily Drill Down, Todd Lammle takes you on a journey through Cisco passwords.In this Daily Drill Down, I will focus on a great way to ensure basic security...

Tags: Routers & switches, Network technology, NETWORKING, network security, Todd Lammle, router, password, Cisco Router, Cisco Systems Inc., user mode, Telnet, console

Technical articles 2001-05-01

TechRepublic Tutorial: Discover how routers power internetworks

Learn how routers route information on your networkIn this article, I will explain how a router (Layer 3 switching) is used in an internetwork, and I will discuss the details of the Network layer.Routers have been around commercially since the late 1980s. They were not really prevalent until the early...

Tags: Routers & switches, Network technology, NETWORKING, Todd Lammle, router, internetwork, network, LAN

Technical articles 2001-04-26