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IPV4 SUBNETTING PRACTICE Subnetting Mastery Video Series. This video series will teach you everything you need to know about Subnetting. To maximize your retention, it is recommended to watch these videos in order, and take a quick practice break after video 4, video 5, and video 7. WHY NAT? – NAT SERIES – PRACTICAL NETWORKING .NET Consequently, the concept of Network Address Translation was born to facilitate the translation between Private addresses and Public addresses. Traditionally, NAT exists to translate Private IPv4 addresses into Public IPv4 addresses. For the sake of simplicity, this article series will describe NAT from this perspective.RSA EXAMPLE
FULL CCNA COURSE BY NEIL ANDERSON The course is usually $99, but with the link above you can get it for $49. To give you an idea of how thorough the course, here is every lesson available in the course: Neil Anderson's CCNA BootCamp -- Course Content. 01 Welcome. Introduction (1:07) How to Make the Most of This Course (5:53) The Study Plan (4:32) Recommended Practice Exams(6
VPN WITH OVERLAPPING NETWORKS Solution #1 – Policy NAT on Both Sides. The first solution involves using Policy NAT on both routers to mask their internal network when speaking to the opposite side. Recall that a Policy NAT is a type of NAT that involves making a translation decision based upon matching both the source and destination address.. R1’s Policy NAT configuration will match packets with a Source IP of 10.0.0 CLASSFUL VS CIDR VS FLSM VS VLSM FLSM. Fixed Length Subnet Mask (FLSM) refers to a strategy where every one of your networks within your infrastructure is the same size.. Whether you received a classful assignment or a classless assignment from your RIR, you can deploy the IP addresses in a Fixed Length manner. For example: You are assigned by your RIR this /24: 9.9.9.0 /24 .Since the biggest segment of your ARP PROBE AND ARP ANNOUNCEMENT Hi Sunny. IP Duplication outside of your network is less of a problem. Remember, the ARP Probe/Announcement checks for unintentional IP duplication, i.e. non-malicious. If there is an inadvertent IP conflict in remote networks, simple Routing would prevent the incorrect IP address from receiving any traffic — Internet routing would only route to the “correct” IP address/network. WHAT IS THE NATIVE VLAN? The Native VLAN is an often confused concept, though it needn’t be. This video will explain what the Native VLAN is and how it affects traffic on a wire. Summary An Access port (or “untagged port” in the non Cisco world) is a switch port which carries traffic for only one VLAN. A Trunk portCISCO ASA NAT
PRACTICAL NETWORKING .NET Supernetting is something like the inverse of Subnetting. With Subnetting, you take one Network and divide it into multiple sub-networks (subnets). With Supernetting, you are doing the opposite: you take multiple subnets and aggregating them into a single Network. Supernetting is synonymous to the terms IP Aggregation and IPSummarization.
IPV4 SUBNETTING PRACTICE Subnetting Mastery Video Series. This video series will teach you everything you need to know about Subnetting. To maximize your retention, it is recommended to watch these videos in order, and take a quick practice break after video 4, video 5, and video 7. WHY NAT? – NAT SERIES – PRACTICAL NETWORKING .NET Consequently, the concept of Network Address Translation was born to facilitate the translation between Private addresses and Public addresses. Traditionally, NAT exists to translate Private IPv4 addresses into Public IPv4 addresses. For the sake of simplicity, this article series will describe NAT from this perspective.RSA EXAMPLE
FULL CCNA COURSE BY NEIL ANDERSON The course is usually $99, but with the link above you can get it for $49. To give you an idea of how thorough the course, here is every lesson available in the course: Neil Anderson's CCNA BootCamp -- Course Content. 01 Welcome. Introduction (1:07) How to Make the Most of This Course (5:53) The Study Plan (4:32) Recommended Practice Exams(6
VPN WITH OVERLAPPING NETWORKS Solution #1 – Policy NAT on Both Sides. The first solution involves using Policy NAT on both routers to mask their internal network when speaking to the opposite side. Recall that a Policy NAT is a type of NAT that involves making a translation decision based upon matching both the source and destination address.. R1’s Policy NAT configuration will match packets with a Source IP of 10.0.0 CLASSFUL VS CIDR VS FLSM VS VLSM FLSM. Fixed Length Subnet Mask (FLSM) refers to a strategy where every one of your networks within your infrastructure is the same size.. Whether you received a classful assignment or a classless assignment from your RIR, you can deploy the IP addresses in a Fixed Length manner. For example: You are assigned by your RIR this /24: 9.9.9.0 /24 .Since the biggest segment of your ARP PROBE AND ARP ANNOUNCEMENT Hi Sunny. IP Duplication outside of your network is less of a problem. Remember, the ARP Probe/Announcement checks for unintentional IP duplication, i.e. non-malicious. If there is an inadvertent IP conflict in remote networks, simple Routing would prevent the incorrect IP address from receiving any traffic — Internet routing would only route to the “correct” IP address/network. WHAT IS THE NATIVE VLAN? The Native VLAN is an often confused concept, though it needn’t be. This video will explain what the Native VLAN is and how it affects traffic on a wire. Summary An Access port (or “untagged port” in the non Cisco world) is a switch port which carries traffic for only one VLAN. A Trunk portCISCO ASA NAT
SERIES – PRACTICAL NETWORKING .NET Knowledge tends to build on itself. Which is to say, one cannot expect to be an expert in one topic, without understanding other, prerequisite topics as well. As such, many of the articles on this site have been organized into Series. Each article within the seriesassumes an
WHY NAT? – NAT SERIES – PRACTICAL NETWORKING .NET Consequently, the concept of Network Address Translation was born to facilitate the translation between Private addresses and Public addresses. Traditionally, NAT exists to translate Private IPv4 addresses into Public IPv4 addresses. For the sake of simplicity, this article series will describe NAT from this perspective.CISCO ASA NAT
Part 1 – NAT Syntax. There are two sets of syntax available for configuring address translation on a Cisco ASA. These two methods are referred to as Auto NAT and Manual NAT.The syntax for both makes use of a construct known as an object.The configuration of objects involve the keywords real and mapped.In Part 1 of this article we will discuss all five of these terms. ARP PROBE AND ARP ANNOUNCEMENT Hi Sunny. IP Duplication outside of your network is less of a problem. Remember, the ARP Probe/Announcement checks for unintentional IP duplication, i.e. non-malicious. If there is an inadvertent IP conflict in remote networks, simple Routing would prevent the incorrect IP address from receiving any traffic — Internet routing would only route to the “correct” IP address/network.TRADITIONAL ARP
As we’ve learned before, the Address Resolution Protocol (ARP) is the process by which a known L3 address is mapped to an unknown L2 address.The purpose for creating such a mapping is so a packet’s L2 header can be properly populated to deliver a packet to the next NIC in the path between two end points.. The “next NIC” in the path will become the target of the ARP request. STATIC PAT – NAT SERIES – PRACTICAL NETWORKING .NET According to the definitions outlined in the NAT Terminology article, a Static PAT implies a translation of the IP address and Port, where the post-translation attributes are explicitly defined.. There are multiple use cases for a Static PAT, but they all have one thing in common – a need to manually change the TCP or UDP port as a packet moves through a router or firewall. CISCO NAT TERMINOLOGY Cisco NAT Terminology. Cisco has created some NAT terminology which explicitly refer to the IP addresses and/or ports involved in Network Address Translation (NAT). While discussing the addresses involved in a NAT, using the terms like “Source” and “Destination” are common. However, using such terms can create some ambiguity. ROUTING BETWEEN VLANS We wrote an article which covers Virtual Local Area Networks (VLANs) as a concept, and another article on configuring VLANs on Cisco witches.The remaining subject to cover is the different options that exist for routing between VLANs. This is also sometimes called inter-vlan routing, or occasionally Router on a Stick (RoaS).. Why do we need Routing Between VLANs? CISCO NAT CONFIGURATION This is the illustration of a Static NAT from the NAT article series: To configure Static NAT on a Cisco IOS router to match the translation depicted above, first designate the Inside and Outside interfaces, then apply the following command: ip nat inside source static 10.2.2.33 73.8.2.33. This will create a permanent, bidirectionalmapping
ACLS... CLOSER TO THE SOURCE OR THE DESTINATION This article is a part of a video series on Access Control Lists (ACLs). Access Control Lists What are Access Control Lists?Numbered ACL SyntaxNumbered ACL ConfigurationNamed ACL SyntaxNamed ACL ConfigurationIPv6 Access ListsApplying ACLs to InterfacesACLs Closer to the Source or the Destination? The final video in the ACL video series answers the age old question: Where PRACTICAL NETWORKING .NET Supernetting is something like the inverse of Subnetting. With Subnetting, you take one Network and divide it into multiple sub-networks (subnets). With Supernetting, you are doing the opposite: you take multiple subnets and aggregating them into a single Network. Supernetting is synonymous to the terms IP Aggregation and IPSummarization.
IPV4 SUBNETTING PRACTICE Subnetting Mastery Video Series. This video series will teach you everything you need to know about Subnetting. To maximize your retention, it is recommended to watch these videos in order, and take a quick practice break after video 4, video 5, and video 7. WHY NAT? – NAT SERIES – PRACTICAL NETWORKING .NET Consequently, the concept of Network Address Translation was born to facilitate the translation between Private addresses and Public addresses. Traditionally, NAT exists to translate Private IPv4 addresses into Public IPv4 addresses. For the sake of simplicity, this article series will describe NAT from this perspective.RSA EXAMPLE
FULL CCNA COURSE BY NEIL ANDERSON The course is usually $99, but with the link above you can get it for $49. To give you an idea of how thorough the course, here is every lesson available in the course: Neil Anderson's CCNA BootCamp -- Course Content. 01 Welcome. Introduction (1:07) How to Make the Most of This Course (5:53) The Study Plan (4:32) Recommended Practice Exams(6
VPN WITH OVERLAPPING NETWORKS Solution #1 – Policy NAT on Both Sides. The first solution involves using Policy NAT on both routers to mask their internal network when speaking to the opposite side. Recall that a Policy NAT is a type of NAT that involves making a translation decision based upon matching both the source and destination address.. R1’s Policy NAT configuration will match packets with a Source IP of 10.0.0 CLASSFUL VS CIDR VS FLSM VS VLSM FLSM. Fixed Length Subnet Mask (FLSM) refers to a strategy where every one of your networks within your infrastructure is the same size.. Whether you received a classful assignment or a classless assignment from your RIR, you can deploy the IP addresses in a Fixed Length manner. For example: You are assigned by your RIR this /24: 9.9.9.0 /24 .Since the biggest segment of your ARP PROBE AND ARP ANNOUNCEMENT Hi Sunny. IP Duplication outside of your network is less of a problem. Remember, the ARP Probe/Announcement checks for unintentional IP duplication, i.e. non-malicious. If there is an inadvertent IP conflict in remote networks, simple Routing would prevent the incorrect IP address from receiving any traffic — Internet routing would only route to the “correct” IP address/network. WHAT IS THE NATIVE VLAN? The Native VLAN is an often confused concept, though it needn’t be. This video will explain what the Native VLAN is and how it affects traffic on a wire. Summary An Access port (or “untagged port” in the non Cisco world) is a switch port which carries traffic for only one VLAN. A Trunk portCISCO ASA NAT
PRACTICAL NETWORKING .NET Supernetting is something like the inverse of Subnetting. With Subnetting, you take one Network and divide it into multiple sub-networks (subnets). With Supernetting, you are doing the opposite: you take multiple subnets and aggregating them into a single Network. Supernetting is synonymous to the terms IP Aggregation and IPSummarization.
IPV4 SUBNETTING PRACTICE Subnetting Mastery Video Series. This video series will teach you everything you need to know about Subnetting. To maximize your retention, it is recommended to watch these videos in order, and take a quick practice break after video 4, video 5, and video 7. WHY NAT? – NAT SERIES – PRACTICAL NETWORKING .NET Consequently, the concept of Network Address Translation was born to facilitate the translation between Private addresses and Public addresses. Traditionally, NAT exists to translate Private IPv4 addresses into Public IPv4 addresses. For the sake of simplicity, this article series will describe NAT from this perspective.RSA EXAMPLE
FULL CCNA COURSE BY NEIL ANDERSON The course is usually $99, but with the link above you can get it for $49. To give you an idea of how thorough the course, here is every lesson available in the course: Neil Anderson's CCNA BootCamp -- Course Content. 01 Welcome. Introduction (1:07) How to Make the Most of This Course (5:53) The Study Plan (4:32) Recommended Practice Exams(6
VPN WITH OVERLAPPING NETWORKS Solution #1 – Policy NAT on Both Sides. The first solution involves using Policy NAT on both routers to mask their internal network when speaking to the opposite side. Recall that a Policy NAT is a type of NAT that involves making a translation decision based upon matching both the source and destination address.. R1’s Policy NAT configuration will match packets with a Source IP of 10.0.0 CLASSFUL VS CIDR VS FLSM VS VLSM FLSM. Fixed Length Subnet Mask (FLSM) refers to a strategy where every one of your networks within your infrastructure is the same size.. Whether you received a classful assignment or a classless assignment from your RIR, you can deploy the IP addresses in a Fixed Length manner. For example: You are assigned by your RIR this /24: 9.9.9.0 /24 .Since the biggest segment of your ARP PROBE AND ARP ANNOUNCEMENT Hi Sunny. IP Duplication outside of your network is less of a problem. Remember, the ARP Probe/Announcement checks for unintentional IP duplication, i.e. non-malicious. If there is an inadvertent IP conflict in remote networks, simple Routing would prevent the incorrect IP address from receiving any traffic — Internet routing would only route to the “correct” IP address/network. WHAT IS THE NATIVE VLAN? The Native VLAN is an often confused concept, though it needn’t be. This video will explain what the Native VLAN is and how it affects traffic on a wire. Summary An Access port (or “untagged port” in the non Cisco world) is a switch port which carries traffic for only one VLAN. A Trunk portCISCO ASA NAT
SERIES – PRACTICAL NETWORKING .NET Knowledge tends to build on itself. Which is to say, one cannot expect to be an expert in one topic, without understanding other, prerequisite topics as well. As such, many of the articles on this site have been organized into Series. Each article within the seriesassumes an
WHY NAT? – NAT SERIES – PRACTICAL NETWORKING .NET Consequently, the concept of Network Address Translation was born to facilitate the translation between Private addresses and Public addresses. Traditionally, NAT exists to translate Private IPv4 addresses into Public IPv4 addresses. For the sake of simplicity, this article series will describe NAT from this perspective.CISCO ASA NAT
Part 1 – NAT Syntax. There are two sets of syntax available for configuring address translation on a Cisco ASA. These two methods are referred to as Auto NAT and Manual NAT.The syntax for both makes use of a construct known as an object.The configuration of objects involve the keywords real and mapped.In Part 1 of this article we will discuss all five of these terms. ARP PROBE AND ARP ANNOUNCEMENT Hi Sunny. IP Duplication outside of your network is less of a problem. Remember, the ARP Probe/Announcement checks for unintentional IP duplication, i.e. non-malicious. If there is an inadvertent IP conflict in remote networks, simple Routing would prevent the incorrect IP address from receiving any traffic — Internet routing would only route to the “correct” IP address/network.TRADITIONAL ARP
As we’ve learned before, the Address Resolution Protocol (ARP) is the process by which a known L3 address is mapped to an unknown L2 address.The purpose for creating such a mapping is so a packet’s L2 header can be properly populated to deliver a packet to the next NIC in the path between two end points.. The “next NIC” in the path will become the target of the ARP request. STATIC PAT – NAT SERIES – PRACTICAL NETWORKING .NET According to the definitions outlined in the NAT Terminology article, a Static PAT implies a translation of the IP address and Port, where the post-translation attributes are explicitly defined.. There are multiple use cases for a Static PAT, but they all have one thing in common – a need to manually change the TCP or UDP port as a packet moves through a router or firewall. CISCO NAT TERMINOLOGY Cisco NAT Terminology. Cisco has created some NAT terminology which explicitly refer to the IP addresses and/or ports involved in Network Address Translation (NAT). While discussing the addresses involved in a NAT, using the terms like “Source” and “Destination” are common. However, using such terms can create some ambiguity. ROUTING BETWEEN VLANS We wrote an article which covers Virtual Local Area Networks (VLANs) as a concept, and another article on configuring VLANs on Cisco witches.The remaining subject to cover is the different options that exist for routing between VLANs. This is also sometimes called inter-vlan routing, or occasionally Router on a Stick (RoaS).. Why do we need Routing Between VLANs? CISCO NAT CONFIGURATION This is the illustration of a Static NAT from the NAT article series: To configure Static NAT on a Cisco IOS router to match the translation depicted above, first designate the Inside and Outside interfaces, then apply the following command: ip nat inside source static 10.2.2.33 73.8.2.33. This will create a permanent, bidirectionalmapping
ACLS... CLOSER TO THE SOURCE OR THE DESTINATION This article is a part of a video series on Access Control Lists (ACLs). Access Control Lists What are Access Control Lists?Numbered ACL SyntaxNumbered ACL ConfigurationNamed ACL SyntaxNamed ACL ConfigurationIPv6 Access ListsApplying ACLs to InterfacesACLs Closer to the Source or the Destination? The final video in the ACL video series answers the age old question: Where PRACTICAL NETWORKING .NET Supernetting is something like the inverse of Subnetting. With Subnetting, you take one Network and divide it into multiple sub-networks (subnets). With Supernetting, you are doing the opposite: you take multiple subnets and aggregating them into a single Network. Supernetting is synonymous to the terms IP Aggregation and IPSummarization.
IPV4 SUBNETTING PRACTICE Subnetting Mastery Video Series. This video series will teach you everything you need to know about Subnetting. To maximize your retention, it is recommended to watch these videos in order, and take a quick practice break after video 4, video 5, and video 7. WHY NAT? – NAT SERIES – PRACTICAL NETWORKING .NET Consequently, the concept of Network Address Translation was born to facilitate the translation between Private addresses and Public addresses. Traditionally, NAT exists to translate Private IPv4 addresses into Public IPv4 addresses. For the sake of simplicity, this article series will describe NAT from this perspective.RSA EXAMPLE
CISCO ASA NAT
FULL CCNA COURSE BY NEIL ANDERSON The course is usually $99, but with the link above you can get it for $49. To give you an idea of how thorough the course, here is every lesson available in the course: Neil Anderson's CCNA BootCamp -- Course Content. 01 Welcome. Introduction (1:07) How to Make the Most of This Course (5:53) The Study Plan (4:32) Recommended Practice Exams(6
TRADITIONAL ARP
EIGRP FEASIBILITY CONDITION EIGRP is a routing protocol whose strategy to prevent routing loops is based upon what is known as the EIGRP Feasibility Condition. EIGRP also makes use of another concept called Split Horizon, which we will also briefly touch on later in this article. To properly discuss the Feasibility Condition however, you must have an understanding of the following EIGRP terms: Successor, Feasible ROUTING BETWEEN VLANS We wrote an article which covers Virtual Local Area Networks (VLANs) as a concept, and another article on configuring VLANs on Cisco witches.The remaining subject to cover is the different options that exist for routing between VLANs. This is also sometimes called inter-vlan routing, or occasionally Router on a Stick (RoaS).. Why do we need Routing Between VLANs? VOICE VLAN - AUXILIARY VLAN The terms Voice VLAN or Auxiliary VLAN typically mean the same thing: They are a feature which allows an access port — which normally only accepts untagged traffic for a single VLAN — to also accept tagged traffic for a second VLAN.. But that is merely the “what”, and if you were simply looking for a definition, then the above is all youneed.
PRACTICAL NETWORKING .NET Supernetting is something like the inverse of Subnetting. With Subnetting, you take one Network and divide it into multiple sub-networks (subnets). With Supernetting, you are doing the opposite: you take multiple subnets and aggregating them into a single Network. Supernetting is synonymous to the terms IP Aggregation and IPSummarization.
IPV4 SUBNETTING PRACTICE Subnetting Mastery Video Series. This video series will teach you everything you need to know about Subnetting. To maximize your retention, it is recommended to watch these videos in order, and take a quick practice break after video 4, video 5, and video 7. WHY NAT? – NAT SERIES – PRACTICAL NETWORKING .NET Consequently, the concept of Network Address Translation was born to facilitate the translation between Private addresses and Public addresses. Traditionally, NAT exists to translate Private IPv4 addresses into Public IPv4 addresses. For the sake of simplicity, this article series will describe NAT from this perspective.RSA EXAMPLE
CISCO ASA NAT
FULL CCNA COURSE BY NEIL ANDERSON The course is usually $99, but with the link above you can get it for $49. To give you an idea of how thorough the course, here is every lesson available in the course: Neil Anderson's CCNA BootCamp -- Course Content. 01 Welcome. Introduction (1:07) How to Make the Most of This Course (5:53) The Study Plan (4:32) Recommended Practice Exams(6
TRADITIONAL ARP
EIGRP FEASIBILITY CONDITION EIGRP is a routing protocol whose strategy to prevent routing loops is based upon what is known as the EIGRP Feasibility Condition. EIGRP also makes use of another concept called Split Horizon, which we will also briefly touch on later in this article. To properly discuss the Feasibility Condition however, you must have an understanding of the following EIGRP terms: Successor, Feasible ROUTING BETWEEN VLANS We wrote an article which covers Virtual Local Area Networks (VLANs) as a concept, and another article on configuring VLANs on Cisco witches.The remaining subject to cover is the different options that exist for routing between VLANs. This is also sometimes called inter-vlan routing, or occasionally Router on a Stick (RoaS).. Why do we need Routing Between VLANs? VOICE VLAN - AUXILIARY VLAN The terms Voice VLAN or Auxiliary VLAN typically mean the same thing: They are a feature which allows an access port — which normally only accepts untagged traffic for a single VLAN — to also accept tagged traffic for a second VLAN.. But that is merely the “what”, and if you were simply looking for a definition, then the above is all youneed.
SERIES – PRACTICAL NETWORKING .NET Knowledge tends to build on itself. Which is to say, one cannot expect to be an expert in one topic, without understanding other, prerequisite topics as well. As such, many of the articles on this site have been organized into Series. Each article within the seriesassumes an
RSA EXAMPLE
The RSA algorithm is the most widely used Asymmetric Encryption algorithm deployed to date.. The acronym is derived from the last names of the three mathematicians who created it in 1977: Ron Rivest, Adi Shamir, Leonard Adleman.. In order to understand the algorithm,there are a
TRADITIONAL ARP
As we’ve learned before, the Address Resolution Protocol (ARP) is the process by which a known L3 address is mapped to an unknown L2 address.The purpose for creating such a mapping is so a packet’s L2 header can be properly populated to deliver a packet to the next NIC in the path between two end points.. The “next NIC” in the path will become the target of the ARP request. OSI MODEL – PRACTICAL NETWORKING .NET The Open Systems Interconnect model (OSI Model) explains all the individual functions that are necessary for the Internet to work. It is a set of seven independent functions which combine to accomplish the end-goal of Computer to Computer communication.. Much like a car is composed of independent functions which combine to accomplish the end-goal of moving the car forward: A battery WHAT IS THE NATIVE VLAN? The Native VLAN is an often confused concept, though it needn’t be. This video will explain what the Native VLAN is and how it affects traffic on a wire. Summary An Access port (or “untagged port” in the non Cisco world) is a switch port which carries traffic for only one VLAN. A Trunk portGRATUITOUS ARP
This use case is often confused with an attempt to detect possible duplicate IP addresses, but a Gratuitous ARP is not used for this process. To detect an IP address conflict, hosts will use ARP Probes and Announcements, which is the topic for the next article in MASTER EIGRP TERMINOLOGY AND OPERATION To state it in EIGRP terminology: R1’s Successor route for 9.9.9.0/29 is through R2 with a Feasible Distance of 31232. R1 has two Feasible Successor routes for 9.9.9.0/29: Through R3 with a Feasible Distance of 33536. Through R4 with a Feasible Distance of 286976. As before, each Router’s reception of a Reported Distance andcalculation of
PROXY ARP – DEFINITION AND USE CASES – PRACTICAL Proxy ARP in Network Address Translation. Earlier we discussed Proxy ARP and its use case for routing for misconfigured hosts. Of course, that use case all but disappears if every host is configured properly. However, there is a very legitimate and necessary use case for Proxy ARP, and that has to do with Network Address Translation, or NAT. ROUTE PRECEDENCE -- HOW DOES A ROUTER CHOOSE ITS PREFERRED Whenever possible, Routers should have multiple paths (or routes) to get to a target network — this is a key component for network resiliency. Which means Routers routinely compare routes to choose one preferred path among multiple that may exist. The Route Precedence process is accomplished by comparing three different attributes. Thisvideo steps through
CISCO NAT CONFIGURATION To configure Static NAT on a Cisco IOS router to match the translation depicted above, first designate the Inside and Outside interfaces, then apply the following command: This will create a permanent, bidirectional mapping between the Inside Local IP PRACTICAL NETWORKING .NET Networking presented simply, practically, and applicably* Home
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CISCO IP SLA — USING A CISCO ROUTER TO GENERATE TRAFFIC April 3, 2020 By Ed HarmoushLeave a Comment
Recently, I got a chance to play around with some features of Cisco IP SLA and wanted to share a few things I learned. Namely, how to use a Cisco Router to generate simple traffic for testing. In the past, I had only used this feature to send a few pings to test connectivity to* __
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Filed Under: Stand AloneTagged
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ROUTE PRECEDENCE — HOW DOES A ROUTER CHOOSE ITS PREFERRED PATH? April 1, 2020 By Ed Harmoush2 Comments
Whenever possible, Routers should have multiple paths (or routes) to get to a target network — this is a key component for network resiliency. Which means Routers routinely compare routes to choose one preferred path among multiple that may exist. The Route Precedence process is accomplished by comparing three different attributes. Thisvideo steps through
Filed Under: Stand Alone CLASSFUL VS CIDR VS FLSM VS VLSM November 14, 2019 By Ed HarmoushLeave a Comment
These four terms all refer to somewhat overlapping concepts. As a result, some confusion has surfaced about what each of these terms actually mean, and how they differ from each other. That is what this article is going to pick apart. These four terms can be broken up into two sets of two terms: Classful Filed Under: Stand AloneTagged
With: CCNA , subnetting VLANS – THE SIMPLEST EXPLANATION November 12, 2019 By Ed HarmoushLeave a Comment
I just released a new videos which teaches VLANs in the absolute simplest way. This is how I wish VLANs were taught to me when I first started my Networking journey. I have since taught countless students using this format, and the reception has been unanimously positive. Now I’m sharing that method with my readers! Filed Under: Stand AloneCCNA — INDEX
October 12, 2019 By Ed Harmoush9 Comments
The following index of articles all cover topics within the CCNA (Cisco Certified Network Associate) curriculum. If you are studying for the CCNAx, ICND1, or ICND2 exams, you’ll definitely want to read each of these articles. This handy shortlink has been created which will always take you to this page: pracnet.net/ccna PracticalNetworking — CCNA
Filed Under: index
VLANS — INDEX
October 12, 2019 By Ed HarmoushLeave a Comment
The following index of articles all cover various aspects of Virtual Local Area Networks, or VLANs. They are listed here in one place to make it easier to find if you are interested in learning more about VLANs. This handy shortlink has been created which will always take you to this page: pracnet.net/vlans Practical NetworkingFiled Under: index
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FLSM AND VLSM – PART 2 August 30, 2019 By Ed HarmoushLeave a Comment
I’ve just completed Part 2 of the VLSM and FLSM extensions of the Subnetting Mastery video series. The series now, more than ever, covers everything anyone would ever need to know about Subnetting. The series runs you through an example VLSM (Variable Length Subnet Mask) problem. You are given the 9.9.9.0/24 network and tasked to Filed Under: Stand Alone FLSM AND VLSM – PART 1 July 29, 2019 By Ed Harmoush4 Comments
After many requests to extend the Subnetting Mastery video series, I am adding an appendix which will cover Fixed Length Subnet Masks (FLSM) and Variable Length Subnet Masks (VLSM). This is Part 1, which teaches how to answer questions of this variety: If you start with a /18, what size sub-network would you need to Filed Under: Stand AloneTagged
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WHAT ELSE WILL YOU LEARN TODAY?arp ASA
Asymmetric EncryptionAuthentication
BGP
CCNA
CCNP
cisco
Cryptography
DH
eigrp
Encryption
hashing
nat
RSA
subnetting
vlans
VPN
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WHAT ELSE WILL YOU LEARN TODAY?arp ASA
Asymmetric EncryptionAuthentication
BGP
CCNA
CCNP
cisco
Cryptography
DH
eigrp
Encryption
hashing
nat
RSA
subnetting
vlans
VPN
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