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Feature #4541

add ttcn3 tests for situations of Abis latency spikes, where chan act/deact ACK messages arrive late

Added by neels 27 days ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
-
Target version:
-
Start date:
05/09/2020
Due date:
% Done:

0%

Spec Reference:

Description

After timeout on a CHAN ACT or DEACT, or on a PDCH ACT or DEACT message, the lchan_fsm / timeslot_fsm goes into the BORKEN state.
This happens regularly when the Abis link has occasional high latency spikes.
If that expected ACK message arrives late, the lchan / ts is able to recover from the BORKEN state and become usable again.

Write ttcn3 tests for those situations to ensure that the current code works.
Related: https://gerrit.osmocom.org/c/osmo-bsc/+/18170 https://gerrit.osmocom.org/c/osmo-bsc/+/18171


Related issues

Related to OsmoBSC - Feature #4537: OsmoBSC needs strategies to recover broken lchans (lchan state BORKEN)In Progress05/08/2020

History

#1 Updated by neels 27 days ago

  • Related to Feature #4537: OsmoBSC needs strategies to recover broken lchans (lchan state BORKEN) added

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