| Additional Notes |
Proposed Schedule:
Tuesday February 23, 2021
- Prepare for Cutovers
Validate that all new equipment was racked in the correct locations, and that all pre-programming was completed successfully. Review cutover plans with local staff and support groups. Walk through timeline.
Wednesday February 24, 2021
- 4:00 A.M. Break redundancy of Border Firewall, Configure new FW and Routers
- On Wednesday, we will remove the high availability configuration of the firewall pair. We will then upload a new configuration to the standby firewall and begin configuring it to work with the new border routers and core routers. The active firewall and existing border routers will continue to function as previously configured.
- Outages anticipated: None. Operating on a single firewall will continue over the weekend until we are comfortable service is restored and then we will update the existing firewall and bring back the HA pair.
Thursday February 25, 2021
- Validate and Test Configurations
Validate that all new equipment configurations and programming. Continue testing and preparation.
Friday February 26, 2021
- 4:00 a.m. to 8:00 a.m. Admin cutover
- 9:00 a.m. to Noon Resnet cutover
- We will place the Admin and Resnet edge switches on the new Arista core. They traffic will pass through the new routers and on to the old core. Having these edge switches on the new core will help in the cutover process. We will be moving Admin and Resnet segments one at a time. We will begin with the Admin connections and then start at 9:00 A.M. to move the Resnet connections. Ideally, the only outages will be a brief outage as connections are moved. This will result in outages (generally less than 15 minutes) for the resident in their homes. This will potentially be disruptive, and in our recent meetings with BYUH, it was proposed that during the day was less disruptive than a night or weekend cutover for housing.
- Outages anticipated: Each building and edge switch will need to be moved to the new Arista core. Each edge switch could be down for up to 15 minutes as connections are moved. The admin buildings will be impacted between 4 and 8 a.m. The housing residences will have their service disrupted for up to 15 minutes as their switch is moved between 9:00 a.m. and noon.
Saturday February 27, 2021
- Saturday 4:00 a.m.. [Saturday] Border Firewall Cutover, Activate new Border/Core, Data Center Cutover
- Begin early Saturday morning to make sure that firewall/border/core are functioning properly. We will activate the new (Arista) border firewall and border routers while leaving the legacy configuration in place. Saturday morning, we plan to do a morning cutover of the data center services as soon as the Border Firewall has been cutover. This allows us to complete the cutover and test on Saturday in case there is an unforeseen problem. This should reduce the length of any unforeseen outages so they can be detected right away. Firewall connections to all internal data center resources will be impacted including DNS, DHCP, storage, identity, servers, telephony.
- Outages anticipated: The internet connectivity and campus connectivity to all data center resources will be impacted. This is the major cutover and will take down many services.
- Data Center Cutover to follow above as soon as border firewall and border router are brought online.
- Outages anticipated: This will bring down individual resources one at a time as they are converted over. Some of these services include:
Servers VMs, Compute (Pause backups on Friday and turn back on Saturday afternoon)
Databases
Storage
Telephony
Identity
DNS, DHCP,
Public Facing Website
Portals
Learning Management
- EIS onsite for testing Saturday morning 8-9 a.m. (We will notify when we are ready.)
We need to have EIS department to be on campus to test and verify that everything comes back online and is working. Sometime between 8 and 9 a.m. Saturday morning.
- Test that all systems are up and functioning.
- VPN will be down.
Monday March 1, 2021
- Decommission old equipment / Verify everything is working.
We plan to have the cutovers completed before Monday, and to spend Monday and Tuesday identifying and resolving any issues that have come up during the cutover. We will bring the second firewall into the new HA pair.
Outages anticipated: None
Tuesday March 2, 2021
- Final Validation / Contingency buffer
- We plan to depart late Tuesday evening, which gives almost a full day for additional testing and validation, as well as a contingency buffer in case any of the other steps take longer than planned.
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