We will be installing 2 new internal outbound BGP route maps on CORE01.LON01 & CORE02.LON01 tonight between 20:00 – 20:15.
This work is to further improve BGP security internally between cores.
The new rules should not cause any BGP session resets or any loss of existing known routes from upstream peers, however we may reset the sessions to ensure they are working correctly. This will cause traffic to re-route for a few moments before returning to normal.
UPDATE 01 – 20:20
This window has been extended until 21:00 due to a late start by engineers.
UPDATE 02 – 20:27
CORE01.LON01 has been updated and the filters tested without the need for a full session reset.
UPDATE 03 – 20:35
CORE02.LON01 has been updated and the filters tested without the need for a full session reset.
Network monitoring shows all routing tables have returned to normal however engineers will monitor for the next few hours to ensure all routing tables remain consistent between Cores.
UPDATE 04 – 21:30
The routing tables on both CORE01.LON01 and CORE02.LON01 have remained constant for the past hour and we are happy to fully close this maintenance window.