I'm with halbrd....I've taken several practice exams for my COMPTIA A+ and I've yet to find anyone to breakdown subnet masks like you have. Unbelievable! Thanks so much!!
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Lorex, if your gateway is 192.168.0.1 and your device is on the 192.168.1.X address, you would need to open your subnet mask, on both devices, to 255.255.0.0, so that they can communicate with one another.
@@automationdirect SO It MEans As we have IP Addresses of Class A with subnet Mask 255.240.0.0 1. By converting Subnet Mask into Binary form.
255 240 0 0 11111111 11110000 00000000 00000000 Here Subnet Bits are 4 = 1111 Maximum Subnets = 24 = 16 S0 Mask Bits = 8+4 = 12 Bits for Host = n= 20 Number of host per Subnet = 2n = 220 = 1,048,576 Use able host per Subnet = 1,048,576 - 2 = 1,048,574 First Host = 00001010 0000 0000 00000000 00000001 10 0 0 1 Last Host = 00001010 0000 1111 11111111 11111110 10 15 255 254 Host Address Range = 10.0.0.1 - 10.15.255.254 So finally we can assign any IP address to each device under the Range 10.0.0.1 - 10.15.255.254 which having Subnet Mask 255.240.0.0
By changing to 255.255.0.0 that places them on the same "subnet", let them know that the communications can flow between two device that have the same starting 2 octets. Example *192.168* .43. 2 and *192.168* .1.21
One plc s7 400 - 192.168.149. X 255.255.255.0 ############# Other plc s7 400- 192.168.1.X 255.255.255.0 ********** I dont want to change mask as 255.255.0.0 ...
You would have to change the Subnet mask or use a device as a default gateway between these two separate subnets. Some managed switches would allow this type of VLAN. The Stride managed switch would be one option: ua-cam.com/video/JWXnYGIa7k8/v-deo.html
Your Subnet mask will be determined by what you need to communicate with 192.168.0.1. If 192.168.0.1 needs to communicate with 192.168.0.2, then the subnet mask could be 255.255.255.0. but if 192.168.0.1 needs to talk with 192.168.25.2, then it needs to be 255.255.0.0
255.255.111111 00.00 00 00 00 could a subnet mask be like this ? so my question is is subnet massk 255 or 0 only or can be something in between for some ip addresses sorry maybe it is a dumb question from me im not an expert
Ts, great question. Yes you can have a "Tight Subnet". You can define any number between 0 - 255. This was a wider topic that could be covered in this "Basics video". There are some subnet calculators that can help to determine the span of your subnet. Please see this link www.site24x7.com/tools/ipv4-subnetcalculator.html
@AutomationDirect.com ummm but can i get out the tight subnet mask with only knowing the ip i mean there could be many tight subnet masks for the same ip so it is not possible to know which mask for an ip with just knowing the ip thank u so much the website is helpful
@@tscoon8199 You would need to know the IP addresses of the devices that you would want to talk to one another. Then use the subnet calculator to create a tight subnet. Of use the range, like I did in this video and just use 0s or 255s.
I've tried for so long to wrap my head around subnets, watched multiple videos 15-20 minutes long, and this video did it in 3 minutes flat. Thank you!
Thank you very much for the praise. Glad to be of help. Check out our website for more videos. www.automationdirect.com/videos/home
Finally after so much searching over the internet. A perfect example of Subnet mask, thank you so much.
@ Raj Hussain, thank you for the high praise.
No thank you Sir, please keep bring them in
I'm with halbrd....I've taken several practice exams for my COMPTIA A+ and I've yet to find anyone to breakdown subnet masks like you have. Unbelievable! Thanks so much!!
Your welcome Charles, good luck on your exam!
Like many others have stated I've been struggling to understand the subnet mask this finally made some sense
Thank Joe This is a topic that many struggle with. I am glad we were able to provide you with a solution. Have a great day.
Thank you, this video really helped me. Informative and good use of visual exampels.
Thank you for watching - we're happy we could help!
Floki dick
Thanks , very informative ,in simple presentation
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One of the best video I have seen. Tnx
Glad to hear Alula, make sure to check out any of our other 1100+ videos at www.automationdirect.com/videos/home
Hi thank you. then what will be the same default gateway I can use for these.
See this video for how to determine Default gateway. ua-cam.com/video/6isuQ8-w8S4/v-deo.html
Thank you, easily explained. Wish I'd have saw this video sooner!
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This video will help with the basics understanding of getting you plc connected to your local LAN
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Thank u it helped a lot
Glad it helped
Thank you so much, really helped
Glad to help!!
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Well my gateway is 192.168.0.1 so should I put 255.255.0.0? And does that better the connection?
Lorex, if your gateway is 192.168.0.1 and your device is on the 192.168.1.X address, you would need to open your subnet mask, on both devices, to 255.255.0.0, so that they can communicate with one another.
@@automationdirect ok thank yo so much 😆
Glad to be of help. We have more useful videos technical videos here: www.automationdirect.com/videos/home
So if im getting this, It's pretty much like a filter??
That is a good way to put it. Just filters what can and cannot talk with one another.
Which ip's can be useable if i have IP's of class A with Subnet mask 255.240.0.0 I really need it so please help me
The top octet must match exactly, but the second octet only has to have the top four bits match of whatever number you choose.
@@automationdirect SO It MEans As we have IP Addresses of Class A with subnet Mask 255.240.0.0
1. By converting Subnet Mask into Binary form.
255 240 0 0
11111111 11110000 00000000 00000000
Here Subnet Bits are 4 = 1111
Maximum Subnets = 24 = 16
S0 Mask Bits = 8+4 = 12
Bits for Host = n= 20
Number of host per Subnet = 2n
= 220 = 1,048,576
Use able host per Subnet = 1,048,576 - 2 = 1,048,574
First Host =
00001010 0000 0000 00000000 00000001
10 0 0 1
Last Host =
00001010 0000 1111 11111111 11111110
10 15 255 254
Host Address Range = 10.0.0.1 - 10.15.255.254
So finally we can assign any IP address to each device under the Range 10.0.0.1 - 10.15.255.254 which having Subnet Mask 255.240.0.0
I’m still kind of lost . Why if you change it to 255.255.0.0. They can talk to each other ?
By changing to 255.255.0.0 that places them on the same "subnet", let them know that the communications can flow between two device that have the same starting 2 octets. Example *192.168* .43. 2 and *192.168* .1.21
Hi. Thank you for videos.
I want to know, not change subnet mask.
I want to do same with subnet mask - 255.255.255.0-
Is it possible?
Hasan, I am unsure what you are asking. Please clarify.
One plc s7 400 -
192.168.149. X
255.255.255.0
#############
Other plc s7 400-
192.168.1.X
255.255.255.0
**********
I dont want to change mask as 255.255.0.0
...
You would have to change the Subnet mask or use a device as a default gateway between these two separate subnets. Some managed switches would allow this type of VLAN. The Stride managed switch would be one option: ua-cam.com/video/JWXnYGIa7k8/v-deo.html
Thank you
My pc name is not displaying under subnet servers...how to fix it please help
Hi Rajesh, It's hard for us to say without knowing more about your network. Contact your IT folks, they will know how to help you.
Trying to find your next video on hate way you have so many can't find please next time your link in description link please
Thanks for the feedback. Did you knw you can view the videos by topic? Try this:
www.automationdirect.com/cookbook
The video on basic understanding of Default gateway can be found here www.automationdirect.com/VID-CM-0006
please give me a lesson how to connect EA9-T7CL-R HMI with my windows 7 laptop
Nisantha, this is a video that is planned for later this year. If you are having issues with this now, please call Tech Support at 1800-633-0405.
What if my IP adress os 192.168.0.1 ??? Will my Subnet mask be 255.255.0.0 ??
Your Subnet mask will be determined by what you need to communicate with 192.168.0.1. If 192.168.0.1 needs to communicate with 192.168.0.2, then the subnet mask could be 255.255.255.0. but if 192.168.0.1 needs to talk with 192.168.25.2, then it needs to be 255.255.0.0
@@automationdirect how can the subnet mask of Class C IP address be 255.255.0.0 ?
is it always 255 or could it be any number?
The mask can be any number - depends on how you want to segment your network
255.255.111111 00.00 00 00 00
could a subnet mask be like this ?
so my question is is subnet massk 255 or 0 only or can be something in between for some ip addresses
sorry maybe it is a dumb question from me im not an expert
Ts, great question. Yes you can have a "Tight Subnet". You can define any number between 0 - 255. This was a wider topic that could be covered in this "Basics video". There are some subnet calculators that can help to determine the span of your subnet. Please see this link www.site24x7.com/tools/ipv4-subnetcalculator.html
@AutomationDirect.com ummm but can i get out the tight subnet mask with only knowing the ip i mean there could be many tight subnet masks for the same ip so it is not possible to know which mask for an ip with just knowing the ip
thank u so much the website is helpful
am i right
@@tscoon8199 You would need to know the IP addresses of the devices that you would want to talk to one another. Then use the subnet calculator to create a tight subnet. Of use the range, like I did in this video and just use 0s or 255s.