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FS#14472 — sbg-d1-a75

Attached to Project— Network
Incident
Strasbourg 1
CLOSED
100%
We currently have a network incident affecting traffic outgoing from SBG.

We are working with our partner to solve this issue asap.

Thank you for your patience.
Date:  Tuesday, 28 March 2017, 22:16PM
Reason for closing:  Done
Comment by OVH - Tuesday, 28 March 2017, 16:45PM

We have identified the issue.

When a sbg datacenter server wants to reach an OVH IP, the exit router of sbg (sbg-d1/d2-a75) shall know the route.
However a bug affecting this equipment prevent him to learn new routes.

So by default, it uses the route going to the equipment sbg-g2-nc5.

This router, sbg-g2-nc5, know only the external routes and send all internal traffic back to sbg-d1/d2-a75). This is where the loop appears.

We are working with our partner Arista to apply a hotfix.

Thank you for your comprehension and patience.


Comment by OVH - Tuesday, 28 March 2017, 17:15PM

We are still working with our partner Arista to apply the hotfix.


Comment by OVH - Tuesday, 28 March 2017, 18:37PM

We have the Arista engineer with us. We are looking for a non-disruptive way of fixing this issue.

Thank you for your patience.


Comment by OVH - Tuesday, 28 March 2017, 19:37PM

We are still with Arista to find a solution to this issue.


Comment by OVH - Tuesday, 28 March 2017, 20:10PM

The bug fix is present in a version released by Arista. We will upgrade our equipment to this version one by one.

Thank you for your comprehension.


Comment by OVH - Tuesday, 28 March 2017, 20:45PM

We have started the update on sbg-d1-a75.


Comment by OVH - Tuesday, 28 March 2017, 21:27PM

sbg-d1-a75 is now up to date and handle traffic correctly.

We are proceeding with sbg-d2-a75 isolation and update.


Comment by OVH - Tuesday, 28 March 2017, 22:15PM

Update of sbg-d2-a75 is now completed and it has been re-added as active element on our network.

Thank you for your patience and comprehension.