Please be advised of the following maintenance window:
Maintenance Window: Friday November 9th, 2018, 12:01am - 3:00am Eastern Time.
Affected Device(s): core02.tor1
Affected Customers: Tor1 BGP customers physically connected to the core02.tor1 router.
Service Impacting: Yes - Customers physically connected to the core02.tor1 router will see services impacted during this maintenance window. This maintenance activity is not expected to significantly impact customers whose equipment is not directly connected to the core02.tor1 router.
Details: We will be replacing the supervisor card in the core02.tor1 core router, and inserting an additional 10GE linecard to the unit. The card(s) in question have already been tested in our test chassis, but will need to be fully reconfigured upon insertion into core02.tor1. During this time, several routing tweaks to the network will also be applied, as the hardware capabilities & configuration will have changed. We will be gracefully shutting down all BGP sessions to core02.tor1 at the beginning of the maintenance window to minimize customer impact.
This maintenance is expected to impact customers who are physically/directly connected to the core02.tor1 core router (aka customers who do their own routing VIA BGP). For the remainder of the customer base, while we do not expect considerable impact from this work, this maintenance window should be considered precautionary, as considerable changes are being made within the network core.
Please note that customers connected to other devices in the Tor1 facility (IE: dist01.tor1, dist02.tor1, core01.tor1) may experience short periods of packet loss/jitter/etc. as BGP paths change, BGP sessions are torn-down/re-established, and routes/paths re-converge during the maintenance work.
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