1. Production Switch Change Protocol

Production Switch Change Protocol

Define “critical” changes:

• New hardware: switch/router/hub added not on current configuration diagram
• Modification involving spanning-tree anywhere
• Upgrade of firmware or “running image” on any switch/router
• Change static routes

Define “configuration” changes (Note: how do you define “ change” for each of these?)

• Change port configuration
• Change VLANs
• Change IGMP for multicast
• Change device(s) connected to ports

1. Classify as “Critical” or “Configuration”

1. “Critical ” --- Requires approval from OCS, with possible additional scheduling with UMNet
   1. Send email notification to physics.ocs@umich.edu and phys.comp.comm@umich.edu announcing upgrade window at least 72 hours in advance or, if emergency, get approval from OCS. Acceptable times for such changes are M-Th, 8am-4pm. No “critical” changes on Fridays, weekends, holidays or evenings (4pm-8am).
   2. Remove switch/router from network, if possible
      1. If network connectivity is required to make the change, must remove our switch block from the network. (unclear what this means)
      2. If network isn’t required, isolate switch/router by physically disconnecting cabling to outside. Merely “disabling” cables/ports is not enough - they must be physically disconnected.
   3. Perform “Critical” change
   4. Local testing to verify status
   5. Reconnect to network, if disconnected
   6. Send email notification of completion to physics.ocs@umich.edu and phys.comp.comm@umich.edu detailing the change and verification results
   7. Update network diagram and forward to OCS…published on WWW at a server of Shawn and Eric’s choosing (their server).

2. “Configuration ” – Changes to switch or router to fix or augment performance or security or to add new capability
   1. Send email notification to physics.ocs@umich.edu announcing proposed changes and time with as much advance warning as possible. Time window should be off-hours?
   2. During time window, perform configuration changes
   3. Monitor network…test to verify status
   4. Send email notification to physics.ocs@umich.edu announcing completion of task and verification results

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