Change in osmo-gsm-manuals[master]: bsc: handover: clarify default of all-cells-are-neighbors
Neels Hofmeyr has submitted this change and it was merged. ( https://gerrit.osmocom.org/11534 ) Change subject: bsc: handover: clarify default of all-cells-are-neighbors .. bsc: handover: clarify default of all-cells-are-neighbors Change-Id: I61f877c7a60419132bdd27c1b4e64150c0520751 --- M OsmoBSC/chapters/handover.adoc 1 file changed, 16 insertions(+), 0 deletions(-) Approvals: Harald Welte: Looks good to me, approved diff --git a/OsmoBSC/chapters/handover.adoc b/OsmoBSC/chapters/handover.adoc index 1120690..b763701 100644 --- a/OsmoBSC/chapters/handover.adoc +++ b/OsmoBSC/chapters/handover.adoc @@ -166,6 +166,22 @@ | ✓ | ✓ | neighbor cgi 001 01 200 3 arfcn 123 bsic 1 | + Default: All Local Cells are Neighbors + +For historical reasons, the default behavior of OsmoBSC is to add all local-BSS cells as neighbors. To +maintain a backwards compatible configuration file format, this is still the case: as soon as no explicit +neighbor cell is configured with a `neighbor` command (either none was configured, or all configured +neighbors have been removed again), a cell automatically lists all of the local-BSS cells as neighbors. +These are implicit mappings in terms of the legacy neighbor configuration scheme, and re-using ARFCN+BSIC +combinations within a BSS will not work well this way. + +As soon as the first explicit neighbor relation is added to a cell, the legacy behavior is switched off, +and only explicit neighbors are in effect. + +NOTE: If a cell is required to not have any neighbors, it is recommended to rather switch off handover +for that cell with `handover 0`. An alternative solution is to set `neighbor-list mode manual` and not +configure any `neighbor-list` entries. + Local-BSS Neighbors Local neighbors can be configured by just the local BTS number, or by LAC+CI, -- To view, visit https://gerrit.osmocom.org/11534 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: osmo-gsm-manuals Gerrit-Branch: master Gerrit-MessageType: merged Gerrit-Change-Id: I61f877c7a60419132bdd27c1b4e64150c0520751 Gerrit-Change-Number: 11534 Gerrit-PatchSet: 2 Gerrit-Owner: Neels Hofmeyr Gerrit-Reviewer: Harald Welte Gerrit-Reviewer: Jenkins Builder (102)
Change in osmo-gsm-manuals[master]: bsc: handover: clarify default of all-cells-are-neighbors
Harald Welte has posted comments on this change. ( https://gerrit.osmocom.org/11534 ) Change subject: bsc: handover: clarify default of all-cells-are-neighbors .. Patch Set 1: Code-Review+2 -- To view, visit https://gerrit.osmocom.org/11534 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: osmo-gsm-manuals Gerrit-Branch: master Gerrit-MessageType: comment Gerrit-Change-Id: I61f877c7a60419132bdd27c1b4e64150c0520751 Gerrit-Change-Number: 11534 Gerrit-PatchSet: 1 Gerrit-Owner: Neels Hofmeyr Gerrit-Reviewer: Harald Welte Gerrit-Reviewer: Jenkins Builder (102) Gerrit-Comment-Date: Wed, 31 Oct 2018 08:09:45 + Gerrit-HasComments: No Gerrit-HasLabels: Yes
Change in osmo-gsm-manuals[master]: bsc: handover: clarify default of all-cells-are-neighbors
Neels Hofmeyr has uploaded this change for review. ( https://gerrit.osmocom.org/11534 Change subject: bsc: handover: clarify default of all-cells-are-neighbors .. bsc: handover: clarify default of all-cells-are-neighbors Change-Id: I61f877c7a60419132bdd27c1b4e64150c0520751 --- M OsmoBSC/chapters/handover.adoc 1 file changed, 16 insertions(+), 0 deletions(-) git pull ssh://gerrit.osmocom.org:29418/osmo-gsm-manuals refs/changes/34/11534/1 diff --git a/OsmoBSC/chapters/handover.adoc b/OsmoBSC/chapters/handover.adoc index 3c9204e..833ee19 100644 --- a/OsmoBSC/chapters/handover.adoc +++ b/OsmoBSC/chapters/handover.adoc @@ -166,6 +166,22 @@ | ✓ | ✓ | neighbor cgi 001 01 200 3 arfcn 123 bsic 1 | + Default: All Local Cells are Neighbors + +For historical reasons, the default behavior of OsmoBSC is to add all local-BSS cells as neighbors. To +maintain a backwards compatible configuration file format, this is still the case: as soon as no explicit +neighbor cell is configured with a `neighbor` command (either none was configured, or all configured +neighbors have been removed again), a cell automatically lists all of the local-BSS cells as neighbors. +These are implicit mappings in terms of the legacy neighbor configuration scheme, and re-using ARFCN+BSIC +combinations within a BSS will not work well this way. + +As soon as the first explicit neighbor relation is added to a cell, the legacy behavior is switched off, +and only explicit neighbors are in effect. + +NOTE: If a cell is required to not have any neighbors, it is recommended to rather switch off handover +for that cell with `handover 0`. An alternative solution is to set `neighbor-list mode manual` and not +configure any `neighbor-list` entries. + Local-BSS Neighbors Local neighbors can be configured by just the local BTS number, or by LAC+CI, -- To view, visit https://gerrit.osmocom.org/11534 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: osmo-gsm-manuals Gerrit-Branch: master Gerrit-MessageType: newchange Gerrit-Change-Id: I61f877c7a60419132bdd27c1b4e64150c0520751 Gerrit-Change-Number: 11534 Gerrit-PatchSet: 1 Gerrit-Owner: Neels Hofmeyr
