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UTP Cabling Pinouts for 1000BASE-T1000BASE-T (Gigabit Ethernet) differs from 10BASE-T and 100BASE-T as far as the cabling and pinouts. First, 1000BASE-T requires four wire pairs. Second, it uses more advanced electronics that allow both ends to transmit and receive simultaneously on each wire pair. However, the wiring pinouts for 1000BASE-T work almost identically to the earlier standards, adding details for the additional two pairs.The straight-through cable connects each pin with the same numbered pin on the other side, but it does so for all eight pins—pin 1 to pin 1, pin 2 to pin 2, up through pin 8. It keeps one pair at pins 1 and 2 and another at pins 3 and 6, just like in the earlier wiring. It adds a pair at pins 4 and 5 and the final pair at pins 7 and 8 (refer to Figure 2-10).The Gigabit Ethernet crossover cable crosses the same two-wire pairs as the crossover cable for the other types of Ethernet (the pairs at pins 1,2 and 3,6). It also crosses the two new pairs as well (the pair at pins 4,5 with the pair at pins 7,8).

Edit: adding the text from safari book and next to it a picture that i drew from what i understood.

Original Poster1 point · 23 hours ago

WOW! now i understand what he meant . yes it is connected 1:1. when loking at it using the color code you can see that pin's 3,6 are the same twisted pair (white-organe/orang) .

2 points · 1 day ago

Ah, I see it now. You're right, it seems a bit like poor choice of words. What it really is trying to say is that you keep 1-1, 2-2, 3-3 and 6-6 just like you did with Ethernet and FE, and then add 4-4, 5-5, 7-7 and 8-8 for GE.

What you illustrated is like a hybrid of crossover and straight-through cabling scheme, not really a valid one. But I agree that Odom's explanation reads more like the way you described it.

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Original Poster2 points · 1 day ago

bingo! that is what confuses me

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Original Poster1 point · 11 days ago


Original Poster2 points · 12 days ago


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We all 've done it before, set exam date then 3 days before the exam you would reschedule if you are not read. Well I set my date to August 7th and tried to reschedule and it was denied because I used a voucher. Make sure you don't experience this.

Now I really worried that I will not pass :(

Original Poster3 points · 13 days ago

Passed ICND1. 905 score

If you're short on time and want to cram enough info in to pass, consider picking up Chris Bryant's CCNA videos on Udemy and watch them at 1.5x speed (he talks slow and your brain will adapt quickly). Take notes as needed and write out concepts that are confusing until it clicks for you. You can do it! Besides, you can always do a deeper dive if needed after you pass.

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Original Poster2 points · 21 days ago

That is what I am doing now actually watching Jeremy from CBT at 1.50x 😅 and some videos at 1.70x

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Did i understood IPv6 Global Unicast address correct first 3 bits are 001?


Original Poster1 point · 23 days ago

2000:: - 3fff:ffff:ffff:ffff:ffff:ffff:ffff:ffff

2 points · 24 days ago

At the moment, yes. The Global Unicast address space is technically everything not otherwise allocated, but IANA has limited allocations to the 2000::/3 block currently. It will likely expand in the future, but we've got a long way to go before that size becomes an issue.

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Original Poster1 point · 24 days ago

Thank you. So, if /3 I only see two 2000::/3 and 3000::/3. No? Where did I mess up? 0010 0011

cischology commented on
r/ccnaPosted by

I am in the process of re-cert my CCNA. If I can ever give you an advice, don't study so you can pass the exam... Study to understand the material then passing the exam is a given.

Use odom book and lab everything you can. I. E. Say the book talks about ARP, then bring up your GNS3 throw in vpcs, router or switch and bring up Wireshark and start investigating. Just my 2 cents


Can someone please explain this to me. I struggle to understand it.

Original Poster2 points · 2 months ago

Thank you for your explanations. I noticed switch is being mentioned multiple times. Am I safe to then think wire speed is L2 terminology?

Wire speed applies to all devices with physical connections. Whether it's a router, switch, firewall, appliance, or host, the speed of the wire is a potential bottleneck for transmission.

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Original Poster1 point · 2 months ago

🤔 How come the wire is the potential bottle-neck? I thought it's the hardware because that's what I understood from previous comments, not because the interface is configured as 1/10 Gbps it means that it's capable of meeting those speed unless it's a beefy device! Now I am more confused.

I actually see a motorize vehicle on that picture, right under the two red flags. Am I missing something?

Certain motor vehicles exist on the island for emergencies mostly. But you can’t bring your car even if you live on the island. Also I believe what you’re seeing is a horse drawn buggy

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Thank u

That is a Sun Spider or Wind Scorpion. I had them in the house I grew up in that was next to train track that delivered coal. They are not deadly and usually only come out in the hotter months of the year. I live in Central Washington State. They do tend to be aggressive and will chase you if you run from them. But in the end, they are harmless.

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I found on of those and was wondering how it made it to my house.. Train tracks make sense now :)

Wait until fire Marshall walks into that building. This is a ready citation waiting to happen.

Really what a great feeling! Wishing you a good luck with ICND2

Original Poster1 point · 2 months ago


You'll need to go to a site like to find it, or contact a dealer. By the time you give any user here enough info to get you a part number, you could have looked it up.

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Original Poster1 point · 3 months ago

Thank you anyway. I am trying to help my father overseas I don't physically have it. Dealer couldn't help me with picture and the want part number. Hence I am here.

Each raw of antennas (those vertical white pols) is of a different cellular company. i.e At&t, Verizon and or Sprint


For any one that passed ICND1 and or 2. Would you be willing to share with me the activation code written on the CD/DVD sleeve that is related to PCPT practice exam? I will be very grateful. TIA


Eh, some people truthfully might not be so inclined to share something they paid for, just an opinion. If you're looking practice questions/labs there are tons of free ones out there (see Helpful Resources!)

Don't forget to check out popular YT channels too! (Danscourses/Keith Barker)

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Original Poster1 point · 4 months ago

Thank you.


Anyone knows how come even after I reboot my phone and when I start chrome it retains all previous browsing sessions?


Who else share their Google calendar with their significant other, but suffer duplicate events?

Original Poster1 point · 6 months ago


Cake day
February 15, 2018
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