GTP-U support for a UE with multiple bearers

Shashank Prasad ssprasad at vanu.com
Tue Apr 17 00:35:36 UTC 2018


Hi,
I just started exploring the GTP-U module (maintained in the kernel) for LTE scenarios.

In LTE, a UE can be associated with multiple bearers.
This implies that an MS IP address can be associated with multiple TEIDs (one for each bearer).

Based on browsing the kernel GTP implementation[1], it looks like the GTP-U (maintained in the kernel) can only support 1 TEID per MS IP address. In which case, the GTP implementation, as is, may NOT be usable by LTE modules.

Is it an correct interpretation?

- Shashank

[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/plain/drivers/net/gtp.c?h=v4.17-rc1


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