CN | IP address Subnetting Supernetting | Subnetting in CIDR, VLSM in CIDR | Ravindrababu Ravula
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- Опубликовано: 5 окт 2024
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For Full Computer Networks Playlist: • Computer Networks - GA... This contains both FLSM and VLSM in CIDR
I pray all the college have teacher like you.
Thanks a lot for sharing superior knowledge. No one explained it in a simplified way. I just sent through linked in request. Hoping for working together in future.
Excellent.... I got clear difference bet Subnetting and VLSM!!! Thankss for effort!
this topic always haunted me :/ Why i did not find this video earlier..:/ amazing beautiful explanation.. thank you so much sir :)
Excellent.................I don't have knowledge to say how much knowledge you have. ..
sir @32:06 in the third octet there would be two more bits remaining but mistakenly you put three ones ..rest of the lecture is amazingly understandable
U r saying correct...sir mistakenly has done
@@ruchitasrivastava2304 I watched this thing 2 years ago when I was IT professional today I work in a bank and have no idea what this thing is about..thank but I must say time flies so fast
@@sayanmajumder1795 XD , why not IT professional now?
@@AtulSharma-wz6og programming wasn't my cup of tea that's why😃
Sir, u r GOD of computer science
Superb teaching bro. Excellent.
This is great.. You are great.. Thanks a ton for such free resource
He really loves to say "is nothing but" 😹
Really a great teacher Sir i requested that plz provide all the lecture in you tube
given a CIDR Ip address. how can we tell that it is subnetted or not?
Dear sir,
in the VLSM where we have to make three subnet of size (64,32,32) can we have this answer (at 19.01)
200.30.40.0 to 200.30.40.31 subnet is /27
200.30.40.32 to 200.30.40.63 subnet is /26
200.30.40.64 to 200.30.40.126 subnet is /26
If, yes it means we can have four answer instead of two
Sir ek hi toh dil hai ....kitni baar jitoge ???
u r amazing sir.. I n doing grt job
sir u are really awesomeeeee. thank u sir
Awesome Video. Thanks a lot
gud lecture
well explained but there was a mistake while explaining at 32minutes, 43 seconds. actually you used one additional bit and it kind of confused me while calculation. however when i counted the number of bits on white board it made sense because there was an additional bit written there by mistake. that is understandable and I got the whole point anyway. nice explanation anyway and better than what i found earlier.
wonder lecturer
Sir ur lectures are really helpful.
Suppose an organization granted a block of address with the beginning address 13.26.75.0/24.There are 256 addresses in this block.the organization needs to have 10 subnets.2 subnets each have 64 addresses,1 subnet each have 32 addresses,4 subnets each have 16 addresses,6 subnets each have 4 addressse.
Please tell me how to design the subnet... with the video ...as soon as possible.
Sir what if i wanted to make subnets such that first would have 120. 2nd would have 60 add and last will have 10 address.
Great lecture awesome sir
at 32:38 only least significant 10 bits will have 1's in it.
How do you know to separate the bits in the last octet?
Oh, the 25 bits are coming from the most significant places regardless of octet
Very helpful. Thank you
At 32:02 You have took 9 bits. instead of 8.
At 15:30 he meant to say "IANA", if anyone was wondering. Look it up if you are curious.
way of teaching is easy
Can anybody tell me how sir takes weights as 2^6 and 2^5
Very good
very good
Thanks sir
Thanks god
Sir
How do we find the no. of subsets from the ip address in this case,it is possible to know the size of the subsets but is it possible to kn ow the number of such subsets?
Also sir can we divide a 128 ip address space into 32-64-32 or does that violate the principle that say that the first address must be divisible by the block side?
From a given CIDR notation you can only find out the size of particular subnet for example
20.30.40.10/25 we can say that size of this network is 2^7 ip addresses , but we cannot say how many subnets are there because i can further take and divide the other half of the network into many small subnets.
coming to the second part of your question
if we divide the network 20.30.40.10/25 as u said 32-64-32
then we will have the first network as 20.30.40.0/27 (20.30.40.0 - 20.30.40.31)
but in the second network with 64 ip addresses i.e. 2^6 we will have (20.30.40.32 - 20.30.40.95 ) , now look at the first address in dotted decimal form 20.30.40.00100000 now this address should be evenly divisible by 2^6 (size of network) but the least significant 6 bits are not all zeroes hence this is not a valid distribution.
How do I make 5 subnets out of /16 block?
If 20.30.40.127/27 is the directed broadcast address of the last subnet of the network divided into 4 subnets, so does 20.30.40.127/25 implies to the directed broadcast address of the whole network ??
Please let me know whether I am right or wrong...
I think so
Not properly explained why /25 have 2 subnet in one example and why 4 subnet in other with same IP.
can you provide the subnet masks without notation?
nice lecture
from bd 😍😍💜💜
Too good.
Thank you sir ❤😃
superb sir
awesome
love u sir
Thank You
when u convert the 25 into binary means it will come as 00011001, but u wrote as 00001010. plz correctect me if i am wrong..
you are wrong...just see lecture 6...you will get it...:)
25 is number of bit in network id. so remaining 7 bit will be in host id part.
Here in lecture binary format for 25 is not written.... it ia binary format for 10
Hi sir ,
I had a doubt seeing your lecture .The subnet masking looks to be useful if we use VLSM ? If i am deviding the block into equal halfs why would i used subent masking? let me take an example to explain my doubt
if suppose i have a ip address a.b.c.d/28 Hid=4 , Bid = 28
So hid =4 will support 16 address say i want to divide it into two half's
So i select one bit . making a subnet mask of say a.b.c.d/29 intern dividing the class into two equal halfs .
We could have included the subnet mask while buying, say i would have bought two blocks of eash size 8 & 8 .
It looks like subnet mask is of less use if we divide the block equally ?
Subnet mask made sense if we had different classes , now as we can chose the block size while buying why subnet mask unless you want to implement VLSM in our network ?
Please enlghten me on this
Two different networks and two subnets in same network have a lot of differences. For example, in Limited Broadcasting you can use Destination address in packet as 255.255.255.255 to broadcast the message to all other hosts in the same network(including all subnets), which you can not do if you have different networks. If you take two different blocks, you may get different addresses. Ex: 199.199.0.0/16 and 50.50.0.0/16. If you take single network and subnet it, initial address will be common. Ex: 50.50.0.0/16 If two subnets are created for this network, the address for those subnets will be 50.50.0.0/17 and 50.50.128.0/17 (Notice that 50.50.x.x is same for both subnets). Moreover its better to have a single network for an organization and create subnets for different purposes. Like one subnet for Developers, one for Testers, one for Managers etc etc. Other factors are maintenance and security.
can i do subnetting into 3 equal parts
How 20 = 2 power 12 at 27:04, plz reply
Total no of bits in IP=32
Mask /20 means 20 bits are used for block
So 32-20=12 bits for host id=>
2^12 possible hosts
I am not understood
CFBR.
Dear sir, why you have chosen first part as 0. can we choose first part is 1.
you are correct...it can be chosen...no problem
uffo..simple common sense!!
IP address is starting with 20 and u r considering it as class c.......y?
you are confusing classful IP addressing with ClassLess InterDomain Routing
.
If there is anything on this universe that I hate the most,then it's subnetting.