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LTE GTP Tunnel (1): Today, we will talk about GTP tunnels used in the LTE network
September 12, 2013 | By Dr. Michelle M. Do (tech@netmanias.com)
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Comments (6)
13
Melih Tiftik 2015-10-05 17:45:50

Thank you for this nice presentation. Just a small thing, parenthesis is missing here:
Now that TEIDs specific to UEs are used, the LTE network can distinguish its subscribers (UEs) from one another by checking their TEIDs instead of IP addresses (P-GWs check both TEIDs and IP addresses of UEs, eNBs and S-GWs check TEIDs only).

Anish Kumar 2018-10-08 16:26:31

so basically there are 4 TEIDs between SGW and PGE per UE?  2 for User Plane(DL & UL) and 2 for Control Plane(UL & DL)?

nirav kapoor 2019-07-12 20:08:06

Thank you for sharing this information, i have one additional query about the UL packet routing at eNB level, if the route is not learnt for SGW/PGW , then how will eNB transmit the received UL packet, will it drop or send via default route.

Also, say the UL TEID SGW/PGW is not reachable from eNB, then is there any mechanism that eNB informs to MME to restrict for selecting the affected SGW/PGW from being allocated.

Your responses are awaited regarding these queries.

Thanks and Regards,

Nirav Kapoor

 

 

 

 

Saloni Batra 2021-10-06 01:39:50

Please provide explainatin for Downlink packet also(from internet to UE).

 

Regards

SaLoni

aycup 2023-06-17 00:19:35

 Hi, 2 for User Plane(DL & UL) and 2 for Control Plane(UL & DL)? why 

aycup 2023-06-17 00:20:00

 Merhaba, Kullanıcı Düzlemi için 2 (DL & UL) ve Kontrol Düzlemi için 2 (UL & DL)? Neden 

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