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Bug #1977

3G IuPS is unreliable

Added by neels almost 2 years ago. Updated 7 months ago.

Status:
New
Priority:
Normal
Assignee:
sysmocom
Category:
Iu interface
Target version:
-
Start date:
03/09/2017
Due date:
% Done:

0%

Spec Reference:
Tags:
3G

Description

When first registering on a 3G network, IuPS data service often does not work right away.
Going to flight mode and back into the network may resolve the issue. Sometimes it takes several of them.
Once showing a website the first time, it seems to work well further on.


Related issues

Related to OsmoSGSN - Bug #1818: IuPS: CN should Iu Release in certain situationsNew2016-10-12

History

#1 Updated by neels almost 2 years ago

  • Related to Bug #1818: IuPS: CN should Iu Release in certain situations added

#2 Updated by neels almost 2 years ago

may or may not be related to #1818

#3 Updated by laforge over 1 year ago

  • Assignee changed from Osmocom Developers to sysmocom

#4 Updated by neels over 1 year ago

See #1818#note-4 (and #1818's attached pcap) indicating a likely solution to this issue: mismatching keystatus.

#5 Updated by neels over 1 year ago

hmm, it doesn't seem so easy to reproduce a situation where the new_key flag reflects the wrong value.
I do get unreliable behavior, like web browser page failing to load, failing DNS lookups on-and-off, but all the while the new_key flag reflects the actual key status that is transmitted.
It doesn't seem to be as quick a fix as I thought.

#6 Updated by laforge about 1 year ago

  • Category set to Iu interface

#7 Updated by laforge 7 months ago

  • Tags set to 3G

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