Regional Technical Contacts

["Lee, Robert S." <>]

Hi Linda,

    Is date correct?  See below.

 

Regards,

 

Robert

 

 

From: <> On Behalf Of Linda Roos
Sent: Wednesday, July 14, 2021 2:47 PM
To: ; ;
Subject: Preparations for final stage of NGI migration

 

CAUTION: External Sender

 

Greetings:

Internet2 is preparing for the final stage in the migration to the new NGI Cisco-based IP network. During this stage, we’ll be migrating the connectors' individual services (BGP sessions, OESS circuits, I2 Cloud Connect, etc.) from the Juniper network to the Cisco network. This is all being accomplished programmatically through the use of scripts to translate the Juniper configurations into the Cisco NSO configurations that will be pushed out to the Cisco routers. We expect this process to begin in early August and complete toward the end of September. 

Specific to IP service migrations that involve a BGP peering with the R&E or I2PX service, we plan to pre-stage and verify the configuration on the Cisco routers to ensure that the translation scripts work appropriately. During a scheduled maintenance window, we will take an operational snapshot of each session, gradually shed traffic from that session, bring the session up on the Cisco router, then take another operational snapshot to compare the before and after state, With this migration methodology, end users shouldn’t see any interruption in their traffic as packets in flight will seamlessly move to backup paths until the new sessions are brought up on the Cisco routers.

Given the large quantity of migrations and the importance of getting real-time feedback from our Connectors' downstream networks, we’re proposing that we do these Connector-facing BGP peer migrations during business hours. We believe this will make it easier for our Connectors to verify their connectivity and participate in a phone bridge during migration. Of course, we will also accommodate those that think an after-hours maintenance would work better for their user community. If you prefer an after-hours maintenance, please respond to this e-mail or email  by June 21, 2021. 

As this is just a proposal, we’re interested in hearing your overall thoughts on this approach. Our goal is to make this as seamless and interactive as possible and we feel that a safe migration while more staff are likely to be in the office will have a greater chance of meeting that goal. If you have questions or comments please contact . Thanks.

 

Linda

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Linda Roos
Sr Director, State and Regional Networks
Internet2

812-558-0615