Startdate: October 6th 2011 05:00:00(CEST)
Enddate: October 6th 2011 07:00:00(CEST)

Dear Customer,



On the 5th of October, during a planned maintenance, we installed an upgraded version of IOS-XR software on our CRS core router at EvoSwitch.

The installed version was intended to be an intermediate version.

As IOS-XR upgrades are lengthy we split up the upgrades into multiple maintenance windows.



The version that is currently running is showing random issues with forwarding traffic. The impact, as we currently see it, is minimal. Only a small amount of prefixes is affected. Once we re-learn the prefixes, the problem is solved.



However it is not a situation we want to maintain until the next planned upgrade.

As such we will perform the next phase of software upgrade during this emergency maintenance window.



During the maintenance you might notice some degredation in performance while alternative routes are learned.



Our apologies for any inconvenience this might cause.





Kind regards,



LeaseWeb NOC.