Brilliant stuff__! This is the only resource where you'll see flow of messages & their purpose together with interface & protocol. Beautifully explained. Much appreciated
@shubha07m5 жыл бұрын
This is the best explanation of LTE call flow using Wireshark capture I've ever seen, this is immensely helpful!
@sudhanshukumar38223 жыл бұрын
This is very useful and best video on the KZbin pf LTE Attach call flow
@Torian242Ай бұрын
This was broken down very well. Thank you for this!
@cibinnv90595 жыл бұрын
Greatest explanation.. Thanks a lot sir.. Got much better idea now.. Pls continue posting more videos.. Really a great explanation. Expecting more videos from you.
@modilalarun12383 жыл бұрын
Excellent explanation, it's very clear and easy to understand. Please post more videos . Thanks for the information. 👍
@Sandeepy1563 жыл бұрын
During inter 3GPP handovers which are the interfaces are created between release 8 SGSN to connect with LTE EPC SGW & MME? A. S3/S4 B. S1/S5 C. All of Above D.None of the above If you know the answer can you answer got it this from my college exam
@AsimKhatim5 жыл бұрын
Great Explanation. Keep up the good work, and I look forward for more videos from you
@gucheddie32043 жыл бұрын
thank you for sharing - i am just starting my LTE journey and this was very helpful
@yascarpharmacyltd93443 жыл бұрын
Very good detailed presentation, I have been searching for something like this for a while. Thanks.
@ISDANA14 жыл бұрын
Excellent Master. Admirable. I feel motivated to learn more. Congratulation
@suryabh184 жыл бұрын
Thanks Claudia. Glad you found the explanation useful
@resoldab2 жыл бұрын
Very precise and detailed explanation, it has helped me greatly.
@saravanakumarkamalakannan97474 жыл бұрын
Good explanation in a simple way . . keep up the good work ....thanks
@krishnabonthu3122 жыл бұрын
Hi Surya, Nice explanation. Thank You.
@hariharanmurali96132 жыл бұрын
This video is remarkable! Kudos to you
@dheerendraprasad20209 ай бұрын
will u provide the wiresharks log from node
@persiusonime15094 жыл бұрын
Simply the best. It comes natural. Very coincise
@bidhanpatel39874 жыл бұрын
Excellent !! Well explained step by step with required info !!!
@nsivachidambaram5 жыл бұрын
Expecting more videos from you .. very Good explanation with samples ...
@nainglinn17458 ай бұрын
The best explanation 🎉🎉🎉!
@ForzaSyria3 жыл бұрын
thank you brother .. it's really useful :)
@SAURABHJAIN1989 Жыл бұрын
I always have this doubt: what is the "initial UE message"? I mean IP of phone / device or what exactly certain numbers or kind of data UE send to MME?
@bhavinjoshi67802 жыл бұрын
Excellent video Sir!!! Many many thanks!!! It would be very very helpful.
@sureshgoondla1917 Жыл бұрын
PCRF is not involved in the LTE initial attach?
@AhmedKhan-du3lg3 жыл бұрын
At 11:47 it is mentioned that RAT/VPLMN/IMSI info is transferred in the in the AIR request, but later at 14:18 the same info (RAT/VPLMN/IMSI) is getting transferred in the ULR. I think the later case is true .
@Praveenpayakkara3 жыл бұрын
thank you, one query The S1 AP ID is unique in the ENB, can it possible for another ENB to use the same ID? if not, how the other ENB know this specific S1 AP ID is already used in the NW?
@suryabh183 жыл бұрын
Good question. enb-S1 AP ID is unique within the enb and the MME S1AP ID is unique within the MME. A combination of these 2 uniquely identifies the S1 connection for a given UE. Hope that helps.
@moyukh20075 жыл бұрын
ultimate lte attach explained , many thanks
@manojghongade70953 жыл бұрын
This is really good Video with Wireshark Trace analysis. Request you to put similar video for VoLTE end to end call with wireshark trace so it would be great help
@morhareach73152 жыл бұрын
How do I know that UE attached in 4G,2G or 3G? Can you tell me by looking in this flow?
@balkrishnasrivastava92585 жыл бұрын
amazing explained sir with log ....thanks, like this please make RACH procedure also.......
@kenezmorotz6490 Жыл бұрын
Dear Sir, thanks for the video. Could you tell me how was the capture gathered?
@prasadkeshav43713 жыл бұрын
Very well explained 👏👌👍
@mubarikali83694 жыл бұрын
thanks dear for your help and explanation
@sunilthakur74815 ай бұрын
Best explanation👍
@atahanaltuntas61642 жыл бұрын
Very very good video. I just have one confusion, in Initial Context SetUp Message, MME transfers the SGW GTP TEID and SGW IP to ENB for ERAB set up. So it is for user plane. And in Initial Context Setup Response message, eNB transfers GTP TEID and IP of EnodeB. Then why in last step, SGW informs in Modify Bearer Response message about it's GTP TEID and IP address? MME shall know it in initial Create Session Response message i guess? Thanks for your answer in advance
@Winstons6079smith9 ай бұрын
can you upload tau/rau procedure pcap analysis?
@wirelessnerd71313 жыл бұрын
Very well put together. Thank you.
@balkrishnasrivastava92584 жыл бұрын
Best explanation for attach procedure thanks sir
@sajithnallithodi5 жыл бұрын
Wonderful. Thank you very much for the lucid explanation.
@Sandeepy1563 жыл бұрын
During inter 3GPP handovers which are the interfaces are created between release 8 SGSN to connect with LTE EPC SGW & MME? A. S3/S4 B. S1/S5 C. All of Above D.None of the above
@Jitender_Dhankhar4 жыл бұрын
very well explained sir thank u :)
@basherpvpv39074 жыл бұрын
Great thank you...expect more videos like this..
@syauqisabili37763 жыл бұрын
When i analyzed my pcap file, i get problem that MME closed sctp connection because enodeB(s1aptester) sent ICMP message to MME instead of HEART ACK. do you know why?
@suryabh183 жыл бұрын
Does your enodeB already have a S1 connection established ? Sounds like not.
@syauqisabili37763 жыл бұрын
@@suryabh18 thank you for your reply sir, The log of mme shows 'eNB-S1 accepted' twice. first in s1_path module second in master_sm module after that, Attach request. and the last message is 'eNB-S1[a] connection refused!!!'. these are my files (nextepc.pcap and s1ap.pcap), i hope that your suggestions could help me. drive.google.com/drive/u/0/folders/1mQrEkd10zRALzAaTY3ul9p_nv64r0efw Thank you very much and sorry for disturbing your time.
@suryabh183 жыл бұрын
@@syauqisabili3776 Looked at ur captures. So it seems like SCTP end point on eNB becomes unreachable after the initial attach success. I doubt this is related to the attach. When the enb is in this condition can you verify connectivity to the SCTP port 36412 - some useful commands - www.cyberciti.biz/faq/ping-test-a-specific-port-of-machine-ip-address-using-linux-unix/
@syauqisabili37763 жыл бұрын
@@suryabh18 thanks for your reply sir, I've verified using nping while the condition s1ap is running, the result works properly. (but when im running s1ap, then close automatically without press ctrl+c) when i ran this command on nextepc vm $ sudo netstat --sctp -tulpn one of result shows, sctp 192.168.10.210:36412 LISTEN
@suryabh183 жыл бұрын
@@syauqisabili3776 so you are saying the sctp is healthy on 192.168.10.70 (enb side) under when it does not send a HB_ACK ? If yes, I am not sure what kind of networking you have but maybe worth checking an firewall rules etc. Also u can change sctp settings on both end points to send multiple HB chunks if one does not succeed. Check the vendor doc for exact parameter names. Hope this helps.
@raghavchakravorthy38963 жыл бұрын
where to find this pcap file
@porapooka3 жыл бұрын
Can we get similar type of video for IMS to IMS calls with call flows explanation and examples....
@jacquelinegomez10112 жыл бұрын
This is awesome! Do you happen to have another video that includes a purge request & answer in a s1ap trace & discussing important key factors?
@arcert67434 жыл бұрын
Thank you. Excellent explanation and very helpful in understanding the concepts. Can you please guide how the roaming scenarios work while mobile is moving from one operator to another and how S8 interface PGW is selected. Thanks
@malikyaser12 жыл бұрын
If SGW connect with different PGW that is belong to different user plan in RAN it connect via protocol S8.
@dominiquebamouni67875 жыл бұрын
Very Good explanation. Would you please share the Wireshark packets capture, please. Would like to check to further understand the process. Thank you in advance.
@unnikrishnanvh52513 жыл бұрын
Very useful and nice explanation Can someone tell me in which message the UE gets its IP address from the PGW. Is it from the Create Session Response?
@suryabh183 жыл бұрын
CS response will have the UE IP.
@balkrishnasrivastava92584 жыл бұрын
Please make same for enodeb handover procedure
@rkvizag_USA3 жыл бұрын
Great explanation!
@furcamarius94063 жыл бұрын
Very usefully explanation. Can you please share also for Gx/Gy flows a similar one? Best regards!
@AbdurRahman-po4wg Жыл бұрын
Thanks. Well explained.
@tejas_bodhe3 жыл бұрын
in which msg PGW allocates IP address to UE
@suryabh183 жыл бұрын
Create session response
@mohammedfiguig1204 Жыл бұрын
Best explanation, Thanx,
@sankarcalls2 жыл бұрын
25:55 slip of the tongue. It is Attach Complete and not Attach Accept. But, overall, an amazing quick byte to brush up before interviews.
@ashishkumbhar974111 ай бұрын
Please share the same on IMS call flow
@Crossyourboundaries3 жыл бұрын
very well explained
@danylunny81425 жыл бұрын
Thank you. wonderful explanation.
@travellingguitarsinger3 жыл бұрын
can you share the sample pcap please?
@suryabh183 жыл бұрын
Sorry Amit I can’t share these since there is some proprietary and confidential information in these logs. Thanks for your understanding.
@travellingguitarsinger3 жыл бұрын
@@suryabh18 Understood, Thanks for quick reply.
@suryabh183 жыл бұрын
You can downlead some sample PCAPs from - blog.colte.network/pcap-library/
@VincenZooOO92 жыл бұрын
please add on PCRF call flow with it, thanks
@shajeedsk77024 жыл бұрын
A very good explanation.!. Will be very much helpful if you provide the .pcap files. Thanks in advance.
@suryabh184 жыл бұрын
Glad u found the video useful. Sorry can't share the raw pcap due to Privacy related concerns. Cheers!
@shubhamtayade17597 ай бұрын
Attach Accept msg sent by MME to UE and not from UE to MME.
@samtnvideos29185 жыл бұрын
How can we view these analysis in wire shark , as I have pcap file but I am not getting those messages can any one help
@suryabh185 жыл бұрын
Hello, you should be able to filter by protocol in wireshark
@samtnvideos29185 жыл бұрын
What filter we need to apply
@shajeedsk77024 жыл бұрын
Hi, please provide the .pcap files if you can. Thanks!
@praveensrivastava55374 жыл бұрын
its much helpful..thanks sir
@anupdevlikar1034 жыл бұрын
Loved it !!
@DeepakSingh-mj9jw6 жыл бұрын
nice explanation
@malakondaiah15125 жыл бұрын
Can u upload x2HO,S1HO,csfb,srvcc ,volte,MIMO,CA, wireshark videos
@malakondaiah15125 жыл бұрын
Good information,tq u
@Sandeepy1563 жыл бұрын
The eNode transmite e Responee message to a preamble using which of the following? Select the best 1 Pot Channel 2 Downlink Control Channel and Shared Channel 3 Shared Channel 4 Paging Channel 5 Data Channel
@pajtimi62655 жыл бұрын
Can we have the .pcap file please ?
@rakeshvarma94243 жыл бұрын
superb
@Harshitgupta-qw2yc3 жыл бұрын
Thanks
@irfanshiekh1874 Жыл бұрын
Master peice
@vaishnavijadhav30023 жыл бұрын
Nothing is visible
@smrutiranjan5885 жыл бұрын
Thank u
@electricaladvisorabhinov98843 жыл бұрын
GOOD EXPLABATION BUT PLS STOP DRINKING WATER IN BETWEEN
@santhoshreddygogula27685 жыл бұрын
bro call logs are not clear
@rohitkumara2802 Жыл бұрын
❤
@anshgupta80655 жыл бұрын
Please make video on python & c Programming ,which is used in protocol development /testing with interview question in C.
@AliKh-kt1ip4 ай бұрын
please drink on the other side of the microphone 😂😂😂😂
@2812manish3 жыл бұрын
Nice explanation, but it seems that instructor is speaking while with eating something, and it sounds very annoying.
@ashwinilakade936 Жыл бұрын
Same issue ....it's irritating ...😐
@amitdhamija2222 жыл бұрын
Awesome
@raghavshere5 жыл бұрын
Would you please stop slurping in between your videos .. It's so irritating . Otherwise from content point of view .. your work is nice .
@armurray359 Жыл бұрын
Good tutorial, but the periodic slurping of whatever he's drinking is driving me nuts 😢.