[BGPCEP-529] Configured Add-path path selection mode does not take effect Created: 22/Aug/16  Updated: 03/Mar/19  Resolved: 07/Sep/16

Status: Resolved
Project: bgpcep
Component/s: BGP
Affects Version/s: Bugzilla Migration
Fix Version/s: Bugzilla Migration

Type: Bug
Reporter: Ajay L Assignee: Milos Fabian
Resolution: Cannot Reproduce Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified
Environment:

Operating System: All
Platform: All


External issue ID: 6503

 Description   

Setup details:
ODL (10.18.162.90) peering with XRv (10.18.133.131) and 2 ExaBGP instances (10.18.162.241, 10.18.162.231), all 3 configured as rr-clients

Add-path with all-paths scheme is enabled on ODL. Add-path is enabled on the 2 ExaBGP instances and they are configured to send prefix with different path-id’s

When sessions come up, prefixes with correct path-id’s show up in adj-rib-in and effective-rib-in of the peers. However the prefixes in adj-rib-out do not have path-id, and those in loc-rib have path-id 0. And ODL does not send the two paths it received from one ExaBGP peer to other ExaBGP peer but just sends one



 Comments   
Comment by Milos Fabian [ 23/Aug/16 ]

I am able to reproduce the problem with latest boron branch code - loc-rib is not started with all-path selection strategy.
Interesting is that master branch is working ok, however it is basically the same code-base as stable/boron.

Comment by Milos Fabian [ 23/Aug/16 ]

(In reply to Milos Fabian from comment #1)
> I am able to reproduce the problem with latest boron branch code - loc-rib
> is not started with all-path selection strategy.
> Interesting is that master branch is working ok, however it is basically the
> same code-base as stable/boron.

Update: I did a mistake in my configuration. For me, all-path is working fine with boron too -> in a loc-rib, prefixes have assigned non-zero path-ids.

Comment by Milos Fabian [ 07/Sep/16 ]

This functionality is covered by CSIT: https://jenkins.opendaylight.org/releng/view/bgpcep/job/bgpcep-csit-1node-userfeatures-only-boron/943/robot/bgpcep-userfeatures.txt/020%20Bgp%20Functional%20Multipath/

Tests are passing now.

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