Campus Data Networking Architecture:
Routing Core Redundancy Issues
- Router cluster easier to manage in one location.
- One approach to provide redundant, identical hubs, not segment the campus. This would allow one to be used as a hot spare for failures, or to use to minimize (or even eliminate) network outages when maintenance or upgrades need to be performed.
- Another approach is to distribute staff to major campus centers to operate distributed routing equipment.
- Central node room is likely not big enough as is. Already no additional room for more AC, power, or modem racks. While electronics continue to get smaller, brand new technologies (like ATM switches) will start off relatively large.
- Current fiber pathway may not easily provide a location for an alternative hub.
- There may not be sufficient fiber crossing major campus thoroughfare
- PennNet multi-mode fiber will not yet provide speeds greater than 155Mb/s
- Need to perform more detailed threat and risk analysis...
Please address comments or questions to Dr. Noam Arzt, arzt@isc.upenn.edu [6/18/96]
URL: http://nextb.dccs.upenn.edu/noam/questnet96/arch/reduncancy.html