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Bug #4070

Cellular Network Infrastructure - Bug #4069: Implement IPA PING/PONG mechanism everywhere

Implement IPA PING/PONG mechanism on RSL and OML

Added by laforge 7 months ago. Updated 5 days ago.

Status:
In Progress
Priority:
Normal
Assignee:
Category:
A-bis RSL
Target version:
-
Start date:
06/21/2019
Due date:
% Done:

70%

Spec Reference:

Description

Let's make sure the RSL and OML links use the IPA PING/PONG mechanism to the BTSs and disconnect if no PONG is received. the interval and timeout should ideally be user(vty)-configurable. It might be that the actual code has to reside in libosmo-abis, not in OsmoBSC itself. Keep in mind that classic E1 BTSs don't have IPA or TCP.

History

#1 Updated by laforge 7 months ago

  • Related to Bug #4069: Implement IPA PING/PONG mechanism everywhere added

#2 Updated by laforge 7 months ago

  • Parent task set to #4069

#3 Updated by laforge 19 days ago

  • Assignee deleted (Hoernchen)

#4 Updated by osmith 7 days ago

  • Status changed from New to In Progress
  • Assignee set to osmith

#5 Updated by osmith 6 days ago

  • % Done changed from 0 to 40

@Hoernchen already submitted a patch here: https://gerrit.osmocom.org/c/libosmo-abis/+/14743/

I've fixed what was mentioned in the review and tested it. ping/pong shows up properly in wireshark, however, when disconnecting the BTS, it segfaults.

Tested with this config in osmo-bsc.cfg (with short timeout and interval on purpose):

 e1_input
  e1_line 0 ipakeepalive 1 2

I'll look more into it, and also look into TTCN-3 testing.

#6 Updated by osmith 5 days ago

  • % Done changed from 40 to 70

Segfault is resolved, patch refactored after reviews. Tests remain to be implemented.

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