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Feature #4522

gbproxy: Redundancy within proxy pair

Added by laforge about 1 year ago. Updated about 1 month ago.

Status:
In Progress
Priority:
High
Assignee:
Target version:
-
Start date:
05/01/2020
Due date:
% Done:

0%

Spec Reference:

Description

A gbproxy pair features a redundant connection between the BSS and SGSN side.

Should either of the two proxies within a pair be inoperational, the NS-VCs over the E1 circuits on the BSS side of that one proxy are getting BLOCKED and traffic between BSS and SGSN transparently continues to flow via the other proxy of the pair.

History

#1 Updated by laforge 6 months ago

  • Assignee set to laforge
  • Priority changed from Normal to High

#2 Updated by laforge 3 months ago

  • Assignee changed from laforge to daniel

#3 Updated by daniel 2 months ago

  • Status changed from New to In Progress

Some message sequence charts describing how the state replication, pro-/de-motion should work.

There is also a wiki page describing our approach: Redundancy_between_GbProxy

#4 Updated by laforge about 1 month ago

pushed a patch to support the advertisement of foreing IP endpoints in IP-SNS. It's untested and just in gerrit for soliciting some early review at https://gerrit.osmocom.org/c/libosmocore/+/23521

I'm planning related TTCN3 tests, once I've introduced proper "full mesh NS-VCs on IP-SNS" in TTCN3.

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