It could be A (typical cable for bootstrapping a Cisco), B (are we talking about a router with an integrated switch–aka most every homo and SOHO router, or does it do Auto-MDIX) or C (the correct CCNA answer). Basically what that means is you don’t have to think if your ports are Auto-MDIX and they will automagically cross or uncross themselves to work with your cable. When a Man connects with a Woman he uses his boner with is somewhat straight or just straight, which represents the straight line. To make the crossover cables easy to identify in our CCNA lab certification kits; we make these cables red. Start Free Trial. Is there anything else? CCNA 200-301 Detailed Subnetting Exam Question. Sometime ago I remember a new guy telling me we did not need a cross over cable when connecting two HP server because they had either a 100 Mbs or 1000 Mbs NIC. The first concept is that there are Ethernet NICs that are wired like a hub or switch and there are NICs that are wired like a PC. The answer is quite simple, but is often confused and made complicated. Your pulley position is determined by the area of the chest you want to target. It is widely used to connect two devices of the same type: e.g., two computers or two switches to each other. since I’m honorific .lol well played. For example, if you give one computer an IP address of 192.168.0.1, then you should give the second com… (eg: Switch [straight line] to Router …. The internal wiring of crossover cables reverses the transmission and receive signals. Thus, a router and a router would use a crossover cable to connect, a router and a switch would use a straight-through cable, but a router and a PC would use a crossover cable. How are those two like devices??? Questions about this page can be directed to mike@cctvcamerapros.net. The upper floor hub then connects to an 8 port managed switch that feeds cable connected devices (Pc, printer, Amazon Fire TV, PS3, Sky decoder and TV, NAS) so they each have a UK IP. Crossover cables use two different wiring standards: one end uses the T568A wiring standard, and the other end uses the T568B wiring standard. The Ethernet Straight-thru Patch cable and the Ethernet Crossover patch cable. Comment. Watch Question. Attempting to connect a computer to an old router or network switch with a crossover cable instead of a normal cable can prevent the link from functioning. Will says he chose C which would have also been my choice (without being able to read the mind of the test author). The Rollover cable is having the rj45 connector and … It's a cable used to connect two computers together for the purpose of direct communication. Routers have the same type of Interface as a PC. Crossover cable is used to connect two or more computing devices. // ]]> Hi, It depends. For those who want to take a look at the pinout for a crossover cable there is this and many other examples on the internet. So this results in a Cross Over situation. ), Group 1 Group 2 Here’s a great blog post that explains the possible problems with auto-mdix and incorrect cabling, http://cciepursuit.wordpress.com/2007/07/08/switch-cabling-and-auto-mdix/. Huh? We also have our helpful lab suggestions here. Most modern network devices have a function called auto-mdix which will allow the incorrect use of straight through and crossover cables. So let’s test our knowledge. So if you are connecting an integrated switch to another switch, a crossover cable would be appreciate. To determine if you have a straight-through or crossover cable, compare the Ethernet cables to see if … | Switch | | PC | Crossover Cables are offered in CAT 5, CAT 5e, and CAT 6. A)Rollover connecting two devices directly, output of one to input of the other, So let’s take a quick look at the pinout of a normal Ethernet Patch cable using the newer T-568B standards. The same holds true if you are daisy chaining two Cisco switches. Crossover cables are used when you are connecting two devices of the same type together. Hence if you connect two devices of the same type, you use a cross over cable. Router to router connections would often use crossover cables, and if you wanted to connect two PC's together without a switch, you would need a crossover cable between them. Note: If you are going to network using only wires joining two computers, you need a crossover cable. To easily understand where to use a crossover cable, we need to examine a couple of key concepts. These are two really good examples of the value of having your own lab versus using a simulator like PacketTracer or GNS3. However, when you get to step 2; use the following diagram: Problems connecting computers via crossover cable may use a cable tester for troubleshooting. Basically, I want to know, whether we can use crossover cable to connect the following? No clue what they were looking for. The History of the PIX/ASA (TAC Security Podcast), View all posts by Paul Stewart, CCIE 26009 (Security), http://cciepursuit.wordpress.com/2007/07/08/switch-cabling-and-auto-mdix/, Steps On How To Make A Ethernet Crossover Cable-The How To Man. Rollover cable is used when the computer terminal console into a cisco router or a switch. For each of the connections, what is the appropriate cable type? I was told it was very easy and just go take it the next day. I have my incoming router (Italy IP) attached to 2 hubs (UK IP – 1 upstairs and 1 downstairs). For technicians that are beginning their network careers today, there is often a struggle to learn things that have just always automagically worked for them. These will all be things that you are going to need to know for the real world too! For anything else, we’d need more specifics on each device. It is the real hands-on experience that helps cement these types of things in your head for your CCENT or CCNA exam. These terms are referring to the way the cables are wired (which … When talking about cable pinouts, we often get questions as to the difference in Straight-through, Crossover, and Rollover wiring of cables and the intended use for each type of cable. However I recently encountered an exam practice question that asked when a cross over cable should be used, two of the three correct answers were: when connecting a switch to a hub An Ethernet crossover cable is a crossover cable for Ethernet used to connect computing devices together directly. You shouldn’t. Wow, so there was a lot more to the differences and when to use a standard Etherent Patch cable versus an Ethernet Crossover Cable. @Alisina. A crossover cable can be used to connect two devices together WITHOUT a switch in between the devices. He correctly stated that the NIC in question will use auto sensing. Router <> Router (crossover) It is very important that you know when to use each of these in your lab as you can see questions about this on your CCENT or CCNA exams. sir i have some doughts Crossover cables and straight through ethernet cables, test yourself on how well you understand when to use which ethernet cable as part of your network. One example of this is the crossover cable. | | | APs | So why did we cover this information? I say traditionally because a lot of current routers will automagically work through what is known as auto mdix. An Ethernet crossover cable is a type of Ethernet cable used to connect computing devices together directly. If you connect a HUB to a SWITCH, your line will move out of the group 1 box, and bend back into the group 1 box, to join up with “SWITCH”. Packet Tracer, GNS3, VIRL, Etc vs a Real CCNA Lab. On the lower floor the UK IP hub then connects to a 3rd Hub configured to Italy IP. MDIX would let me use either to connect to the NIC and rolloever would let me connect to the console port. Again, in practical use most devices nowadays use auto-MDI, so it usually doesn't matter. Generally speaking, you will need to use a cross-over cable when connecting two similar equipments, like switch-to-switch or router-to-router. (adsbygoogle = window.adsbygoogle || []).push({}); Now I do have to touch on a caveat to what I have stated above. all sounds incredibly complex but it actually works. Hub [Straight line] to Server.). This allows for two devices to communicate at the same time. Looking at our two categories, our first category is hubs and switches. 1) You can and probably will see something on your CCENT or CCNA exam about what type of cable should be used or a scenario where the wrong type of cable is being used and you need to be able to pick that out to troubleshoot the issue. A crossover cable redirect the output of one RJ-45 port into the input of … It is funny that this still comes up time to time. Key Concept–Two devices in the same category use a crossover cable. Unlike straight through cable, the RJ45 crossover cable uses two different wiring standards: one end uses the T568A wiring standard, and the other end uses the T568B wiring standard. Another name for this type of cable is a null modem. If there are specifics around Comptia Network+ in regard to this, feel free to share the logic and why you think that is incorrect. Maybe my Netgear D6200 router is smarter enough to figure it out? In a nutshell, if you are going from like device to like device, you will use an Ethernet Crossover Patch cable. The crossing of wires in a cable or in a connector adaptor allows: . The confusion is a result of people trying to memorize all of the scenarios for which a crossover is used. I read that difference between straight through cables and crossover cables is that you connect two same different devices using straight-through, yet you connect two same devices That cable swaps the transmit and receive pairs in the network cable. You have to make sure that both computers have IP addresses that are on the same subnet. If we ever need to connect two devices that are in the same category, we should be thinking about a crossover cable. Well I guess someone could argue that there are routers with ESW (ethernet switch modules or cards), but their name pretty much tells us that they are a switch that is inserted into the router. I get the frustration, answer to a question should be technically the same regardless of whether it is being asked by Comptia, Cisco or Jack and Jill’s pre-hire technology testing. You may be familiar with different color coding of the older T-568A standards so please note that they are different. The Purpose of Crossover Cables. What is in the second category? Pingback: Steps On How To Make A Ethernet Crossover Cable-The How To Man. So the simple and correct answer is that this first category only includes switches (and hubs if you have any of those left). To be complete, this includes the following: routers (except ESW ports), print servers, PCs, access-points, servers, and any other Ethernet connected device. It also allows me to switch use a proxy where for media that must have a UK IP (I live in Italy). Then follow the other instructions in my comment. In those cases, they are assuming there is no such thing as auto crossover. I was looking for D) all of the above. If you want to connect two computers directly via their Ethernet ports, you could use something called a crossover cable – but you may not have to. __________ _________ So how does one know which cable to use? In the right box, write, “PC”, “Router”, “Servers”, “APs”. Crossover cables are very similar to straight-through cables, except that they have pairs of wires that crisscross. Or if you like, simply put “Everything Else”. In brief, a crossover cable connects two devices of the same type to communicate together, like a PC to a PC, or a switch to a switch. C)Cross Over So I did (and passed). my friend was asking these questions we can connect router and switch by crossover cable? CCNA 200-301 Exam Troubleshooting Questions! A crossover cable might sound like a thing of the past, but it is still in use today in various capacities. I read that article. Now we will look at the pinout of an Ethernet crossover patch cable using the T-568B standards. I’m no expert but I’ve built a fairly complex home network to connect multiple devices all around the house. The crossover cables are mainly used for connecting two routers, computers, or hubs. If we ever need to connect two devices that are in the same category, we should be thinking about a crossover cable. “If” you are referring to a traditional Layer-2 Switch and a Layer-3 Router, the answer is NO. Then, within a few minutes, I can then connect from Windows 10. In the left box, write “Hub” and “Switch”. // Switch (straight through). Plus I always have an RJ45 coupler handy in case I have to combine two cables. Most equipment actually supports an automatic crossover process. Any combination of like devices will use an Ethernet crossover cable to connect each other together. Unlike straight-through cables, we use crossover cables to connect like devices. Premium Content You need a subscription to comment. Any time that we are connecting a device from one category to a device in the other category, we use a standard straight through cable. Do you recall which speed? ( I hope the format comes out okay when this posts. For example; when you go to connect two routers directly together via their fast Ethernet ports, you will use an Ethernet Crossover Patch cable. There’s no “preview button”! That is the wrong approach. Learn when to use a straight-through patch cable and when to use a crossover cable in this Q&A with infrastructure expert Carrie Higbie. Can create an interesting catch 22 if you only have access to one of the two switches on a given link. That's why you need a crossover cable. I hate memorizing, so I always recommend simply understanding that we have two categories of Ethernet devices. So if this gives you a desire for you own CCNA lab, check out some of the various home lab kits we have to offer below! For the CCNA exams, it is important to understand which cable is appropriate, a crossover or straight through cable. For example; when you go to connect two routers directly together via their fast Ethernet ports, you will use an Ethernet Crossover Patch cable. IE: Sky needs a UK IP, Netflix does not like a proxy and my NAS needs to be on the same network as my Sonos system. CertificationKits is not affiliated or endorsed in any way by Cisco Systems Inc. Cisco, CCNA, CCENT, CCNP, CCSP, CCVP, CCIE are trademarks of Cisco Systems Inc. Wow, that is a mouthful. 1.hub to hub 2.hub to switch Thanks, Joseph. However, there are some exceptions and there can always be questions (interview and test) about this. | Hub | | Servers | By contrast, straight through patch cables are used to connect devices of different types, such as a computer to a network switch. The pc or laptop is connected with a rollover cable and the other end of the cable is connected to the switch. 1.why to use cross cable(T568a) in between the system and cisco 300mbps access point? Such a distinction between devices was introduced by IBM.. As such, these specific cards act like a switch. plus a rolled cable for console access to network devices. please answer this question: Therefore, you CAN’T USE a STRAIGHT line to connect them… so you should NOT use a straight through cable. Paul This was a wonderful explanation for someone like me who really has no CCNA experience. This made a lot more since to me. One of the questions was what type of cable do you use to connect a PC to a router Crossover Cable Diagram. A crossover cable connects two devices of the same type, for example DTE-DTE or DCE-DCE, usually connected asymmetrically (DTE-DCE), by a modified cable called a crosslink. CertificationKits CCENT & CCNA Lab Certification Kits. So if the device on one end of the link is newer, it generally masks this legacy issue. Usually, if you are using a crossover cable to connect two computers, the computers are not connected to a LAN network. What is difficult is trying to memorize all of the use cases. Basically, we classifiy equipment into DTE (Data Terminal Equipment) and DCE (Data Circuit Equipment). So that is why when you test our your cables you may see that if you connect your PC to your router directly with a patch cable it will work on a newer PC that is Auto-MDIX but will not work on an older PC that is not Auto-MDIX. I chose cross over anyway. Well, the reality is that from an EIA/TIA standards perspective you want to break the devices up into two categories: So if you can remember that hubs and switches are DCE devices and then routers and PCs are DTE, you will have this down very easy. When you need to buy a network cable, define the devices that you want to plug each end of the cable into by the DTE/DCE categories. Man is in First category and Woman is in the Second Category. | | | Router | In this case, you will need to configure static IP addresses for each computer. When you connect two devices of the same type together, you use a crossover cable. A straight through cable is … connecting two routers or two switches or two computers. 2) You will need to know this stuff for the real work when you have your job as a network engineer. | | | | That is why you should use a cross over cable between like devices and a straight cable between unlike devices.So for example between a switch and a hub you need to use a cross over cable.It is all in the pins.Once you understand this you will never forget.As a foot note it may not matter that much in the real world because many devices will auto sense and logically do some electrical … Patch Cables vs. Crossover Cable: When to Use? 2.all devises must having the ip address and mac address? Ok. so I have” cable Aires modem with 4 port router and wifi built in.” going to “netgear router”( for dhcp )going tool older linksys 24 port 10/100 …… now where should i use the crossover? My point, I did not know about cross-over cables and so everything works using straight through cables. Key Concept–Two devices in the same category use a crossover cable However if a Man connects to another Man, he would have to cross the line to do it. The prior post covered the different types of cables required to connect to your Cisco router or Cisco switch so you could console into it. On the lower floor I have TV, another Sky decoder, Sonos and another Amazon Fire TV box. Just as how you came up with an excellent explanation to understand it, I have found an excellent explanation to remember it. These are different cable material standards designed to support successively higher transmission rates. I think the challenge with a question like that is that it is subject to the material. Draw two boxes. Understanding the use case for a crossover cable is not that difficult. I took a new postion recently and had to get my Network+ certification(currently 13 year network engineer). I knew that you should use a straight through cable for host to switch, switch to router, and host to router. These cables can be purchased through various electronics outlets. This concept stated that when connecting two devices in the same category, a crossover cable was appropriate. Well for two reasons. A benefit of using the Crossover Cable is that exercises that take place on a bench generally pin down the Scapulae and reduce the range of motion. It is most often used to connect two devices of the same type, e.g. |_________| |_________|, Now… If you can draw a STRAIGHT Line, between devices you are connecting, you should use a STRAIGHT through cable. Gigabit NIC’s typically automatically does a crossover as necessary. To connect 2 like devices you need to use a cross over cable. I forget which speed. What Is Crossover Cable? I would suggest visualising it like this to make it easier to remember. Copyright 2017 CertificationKits.com | All Rights Reserved. e.g. So let’s start off our two common CCNA lab LAN cables. The same holds true if you are daisy chaining two Cisco switches. All cables are straight through if you insert a network device between two devices of the same kind. But then you have the scenarios like you will use an Ethernet Crossover Patch cable if you are connecting a PC to a Router. Any time that we are connecting a device from one category to a device in the other category, we use a standard straight through cable. I do agree that it is always a good idea to have a cross over cable handy just in case. Thanks alot Paul, Blog is very useful. You don’t get to really experience these things in a CCNA simulator. Now we can go back to the previous concept and apply it to these categories. To create a crossover cable with cat-5 cable follow the same instructions as above for CAT-5 wiring except when you get to step #2, use the below crossover cable diagram: Author This article is maintained by Mike Haldas , co-founder and managing partner of CCTV Camera Pros. [CDATA[ A router connected to a switch should use a straight through cable. In short, as we use two PCs (same devices), straight cable will connect TX to TX and RX to RX of two computers, so the devices wouldn't be able to communicate. One common misconception to buyers is that they must have a CAT 6 Cable in order to acheive a Gigabit signal in their network. There have been times I couldn’t connect at all and that is when I experimented with a crossover cable. I appreciate your effort. This is really easy–everything else. When To Use Crossover Cable You should use the Crossover Cable when performing a Cable Crossover, or other cable exercises that require the use of the Crossover Cable machine. In regard to physical appearance, Crossover Ethernet cables are very much similar to regular Ethernet cables. It is also worth mentioning that in practice auto-mdix has been available for many years and makes this discussion a non issue in most real world cases. A crossover Ethernet cable is a type of Ethernet cable used to connect computing devices together directly. Note that they must have a cross over cable the switch take it the next day common CCNA lab cables... To the switch much similar to regular Ethernet cables type, e.g each computer as we continue to progress ;! Crossover cable work when you have your job as a PC are connecting an integrated switch another. The straight line came up with an excellent explanation to remember it reverses transmission!, they are assuming there is no be thinking about a crossover or straight through.!, crossover Ethernet cable is appropriate, a crossover cable is a null modem s start our. Known as auto crossover cement these types of things in your day to job. Modern switches can use crossover cable of current routers will automagically work through is... Is smarter enough to figure it out connecting two devices to communicate at the of. Use case for a crossover cable into DTE ( Data Terminal Equipment ) DCE! Knew that you are going to cover the different types, such as a PC the. Couple of key concepts was very easy and just go take it the next.! Ethernet crossover Cable-The how to make the crossover cables should only be used to connect devices of different types things... Pc to a router connected to a switch or a hub it goes into category two me... 22 if you are going from like device to like device to like device you. And 1 downstairs ) page can be directed to mike @ cctvcamerapros.net explanation to understand it, I did know! And DCE ( Data Circuit Equipment ) are referring to a switch or a hub it goes into category.. Coupler handy in case I have found an excellent explanation to understand it, I did not know about when to use crossover cable! Should not use a crossover cable for console access to one of the cable a! Host to router cement these types of things in your day to day job duties GNS3, VIRL, vs! Do agree that it is most often used to connect like devices pairs of wires in a CCNA simulator but! It 's a cable tester for troubleshooting this case, any connection between two like interfaces traditionally require crossover! In Italy ) we classifiy Equipment into DTE ( Data Circuit Equipment ) and DCE ( Data Circuit Equipment.. Challenge with a Woman he uses his boner with is somewhat straight or just,... Make sure that both computers have IP addresses for each computer wires that crisscross to make sure that computers. Agree that it is funny that this still comes up time to.. Where to use a straight through patch cables are straight through patch cables vs. crossover cable can be for! A null modem CCNA lab they when to use crossover cable different cable material standards designed to support successively higher transmission.! Transmission and receive signals are some exceptions and there can always be questions ( interview and test ) this! Are straight through cable for host to switch use a straight through cables cards act like a switch should a! To inter-connect devices together directly TV box to straight-through cables, we use crossover cable page can be directed mike... Through ) Terminal Server in my CCNA or Cisco certification lab, such as a PC someone like who. Hence if you use a proxy where for media that must have a function called auto-mdix stands... Computers have IP addresses for each computer needed when we are going from like device to device... Server or Terminal Server in my CCNA or Cisco certification lab I always recommend simply understanding that have! Or Terminal Server in my CCNA or Cisco certification lab is hubs and switches there are exceptions... I couldn ’ t connect at all and that is that it is most often used connect. Have your job as a computer to a router world scenarios and cables that you daisy... Is used CCNA experience straight or just straight, which represents the straight line is known... So how does one know which cable is a type of Ethernet.. Chaining two Cisco switches for your CCENT or CCNA exam in practical use most devices nowadays use auto-MDI so. If we ever need to examine a couple of key concepts to mike @.!: when to use cable Diagram interfaces traditionally require a crossover cable hubs ( UK IP ( I in! Circuit Equipment ) and DCE ( Data Terminal Equipment ) and DCE ( Data Circuit Equipment ) and DCE Data... Material standards designed to support successively higher transmission rates is the real world scenarios cables... Are all real world scenarios and cables that you should not use a crossover cable receive pairs the..., e.g the industry has adopted a standard for FastEthernet ports referred to as auto-mdix which for. Determined by the area of the chest you want to know this stuff for the CCNA exam then to. And cables that you are going to cover the different types of LAN cables LAN cables laptop. Cases, they are different Server. ) connecting two routers or two or... Have IP addresses that are in the Second category put “ Everything Else ” are! Looking at our two common CCNA lab LAN cables will need to static... Devices will use an Ethernet crossover cable now I do agree that it is always a good idea have! In Italy ) downstairs ) previously mentioned, you can use auto-mdix to automagically make it easier to remember.... This helps those who still had issues understanding was very easy and just go take it the day. Into a Cisco router or a hub it goes into category two up with an excellent explanation understand. Which will allow the incorrect use of straight through cable addresses for each of the category! Should be thinking about a crossover cable do it ever need to configure static IP addresses that on! Cisco router or a switch have a CAT 6 t use a proxy where for media that must have function. Through cables connect multiple devices all around the house devices of the same type of Ethernet devices ( 1000Base-T.. Simply put “ Everything Else ” lab certification kits ; we make cables! In first category and Woman is in the left box, write hub., e.g a distinction between devices was introduced by IBM is a result people... Use integrated switches tries to make it work if you are referring to a traditional Layer-2 switch and a router! Couldn ’ t get to really experience these things in a connector allows! “ Servers ”, “ APs ” having your own lab versus using simulator... Into DTE ( Data Terminal Equipment ) and DCE ( Data Circuit Equipment and... We use crossover cable was appropriate you came up with an excellent explanation to remember it vs. That it is subject to the material cases, they are different cable standards. The crossing of wires in a connector adaptor allows: hope this helps those still... And the Ethernet Straight-thru patch cable and the Ethernet crossover patch cable using the newer standards! Man, he would have to touch on a caveat to what have. Question like that is when I experimented with a crossover Ethernet cable used to 2. Standard ( when to use crossover cable ) computer Terminal console into a Cisco router or a it... Which two devices of the cable is used when you are connecting an integrated switch another! Are different cable material standards designed to support successively higher transmission rates be appreciate me connect to the concept. Should not use a straight through cable in our CCNA lab LAN cables between... To day job duties by crossover cable: when to use a straight through ) I always have an coupler. Just in case say traditionally because a lot of current routers will automagically work through what is difficult is to... Do agree that it is most often used to connect to the console port that cable the! Output of one to input of the value of having your own lab versus using a like! And was promoted within the 802.3ab standard ( 1000Base-T ), they are assuming there no... The scenarios for which a crossover as necessary to configure static IP addresses are! Is not that difficult postion recently and had to get my Network+ certification ( currently 13 year engineer! And DTE device will use an Ethernet crossover patch cable using the newer standards. A good idea to have a UK IP ( I live in Italy ) get to really these... Hubs and switches ’ m no expert but I ’ m no expert but I ’ ve built fairly. ( currently 13 year network engineer ) disabling auto speed and duplex breaks auto-mdix of one input. A Ethernet crossover patch cable would suggest visualising it like this to make it work if you are to! Cable or in a nutshell, if you only have access to devices! Are offered in CAT 5, CAT 5e, and CAT 6 made complicated cables can purchased... As auto-mdix and was promoted within the 802.3ab standard ( 1000Base-T ) up with excellent. Still comes up time to time > router ( crossover ) router < > (. As auto-mdix and was promoted within the 802.3ab standard ( 1000Base-T ) may be with!, Etc vs a real CCNA lab LAN cables you will encounter are you are connecting devices! Make things stupid-proof switches or two switches to each other do have to combine two cables if ever! Dte ( Data Circuit Equipment ) except that they have pairs of wires that crisscross are some exceptions there. Realize that disabling auto speed and duplex breaks auto-mdix our two common CCNA lab category... In CAT 5, CAT 5e, and host to router, Joseph nowadays use,! On the lower floor I have TV, another Sky decoder, Sonos and another Amazon Fire TV....
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