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[COMPLETED] Network Maintenance - January 21, 2021 8pm - 12am
Posted by Jay Sudowski on 18 January 2021 04:17 PM
Update 11:05 PM - We are complete with our network maintenance for the evening.  We will conduct the physical topology changes required tomorrow evening.  Please contact our helpdesk for any issues.

Date: January 21, 2021 
Time: 8:00 PM - 12:00 AM (Mountain Standard Time)

Purpose of Work:
We will be performing the work necessary to remove our 1801 California Street / Downtown Denver Data Center from our dark fiber ring.  The work that will be conducted Thursday night is as follows:

1. Groom VLANs from dist3.denver2 to dist3.dtc1.  During this work, our networking team will logically migrate the layer 3 interfaces for routed VLANs that are still homed to dist3.denver2.  We will be performing this work gradually, migrating a few VLANs every few minutes.

2. If time allows, we will move on to physically removing the switch stack from our network.


Impact of Work:

During the VLAN grooming work, there will be a short 3-5 minute network disruption on a per-network basis as the layer 3 interfaces are shutdown on dist3.denver2 and activated on dist3.dtc1.

When we remove dist3.denver2 from the network, there may be a few brief periods of latency and packet loss impacting the whole network while we turn down links connecting dist3.denver to our network and repatch those links to dist3.dtc1, as needed.

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