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From "ASF subversion and git services (JIRA)" <>
Subject [jira] [Commented] (CLOUDSTACK-8751) Minimise VR downtime during network update
Date Mon, 12 Sep 2016 11:47:21 GMT


ASF subversion and git services commented on CLOUDSTACK-8751:

Commit 2acb0b7608a9e2a2e9135c558c8e364b3c8eb623 in cloudstack's branch refs/heads/master from
[;h=2acb0b7 ]

Merge pull request #866 from bvbharatk/CLOUDSTACK-8751

CLOUDSTACK-8751 minimise downtime of network when network update is in progress.more info
in the bug link below.

* pr/866:
  Added license headders
  Added a test to test update router in sequence
  Do not update network if one of the router's state is unknown
  CLOUDSTACK-8751 Added tests

Signed-off-by: Rajani Karuturi <>

> Minimise VR downtime during network update
> ------------------------------------------
>                 Key: CLOUDSTACK-8751
>                 URL:
>             Project: CloudStack
>          Issue Type: Improvement
>      Security Level: Public(Anyone can view this level - this is the default.) 
>            Reporter: Bharat Kumar
>            Assignee: Bharat Kumar
>             Fix For:
> Currently we use redundant virtual router enabled networks to prevent network outage
even if one of the virtual router fails. This is achieved by using redundant virtual routers
along with VRRP protocol. This has increased the network robustness. However  updating a network
with new network offering involves some downtime due to Vr restarts. In case of redundant
VR based networks we can sequence the network update operations to update the backup first
and then update the master while master's operations are being handled by backup, this way
i think we can minimise the downtime.
> Link to FS

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