[ubuntu-havana-R1.10-#18] subnet broadcast fails with non-default MTU set
Bug #1359145 reported by
Prashant Shetty
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | ||
---|---|---|---|---|---|---|
Juniper Openstack | Status tracked in Trunk | |||||
R1.1 |
Fix Committed
|
High
|
Divakar Dharanalakota | |||
Trunk |
Fix Committed
|
High
|
Divakar Dharanalakota |
Bug Description
With latest R1.10 subnet broadcast is failing when Instance are launched in different compute nodes with MTU set to 9000 on VM’s.
Ping was tried with packet size set to 3000.
Issue is seen only from VM's which are launched in other compute than source VM compute.
Shown setup to Divakar.
Changed in juniperopenstack: | |
milestone: | r1.10-fcs → none |
information type: | Proprietary → Public |
tags: | added: releasenote |
tags: | removed: releasenote |
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Git commit id I57ab54c81672e2 0f9e5e3ce275730 a5e3875c258 fixes the issue in R1.1 and git commit id Ib6b9fb357cd2d5 702092ff807dd75 eb48bee6a70 in mainline.
The issue is because of DF bit bit packet that is trapped to Agent does not have ethernet header incase of subnet broadcast and comeplete broadcast. vr_pcow() is modified to ensure that ethernet header is not truncated even in case vr_pcow() to be able to trap the DF bit packet as is to AGent.
-Divakar