Design Reference

Based on network problem-tracking statistics, the following list is an approximate stability estimation model
of a system that uses these components:
• Hardware and drivers represent a small portion of network problems.
• Local software represents a more significant share.
• Interacting software represents the vast majority of the reported issues.
Based on this model, network design attempts to off-load the interacting software level as much as
possible to the other levels, especially to the hardware level. Avaya recommends that you follow these
generic rules when you design networks:
1. Design networks as simply as possible.
2. Provide redundancy, but do not over-engineer your network.
3. Use a toolbox to design your network.
4. Design according to the product capabilities described in the latest release notes.
5. Follow the design rules provided in this document and also in the various configuration
documents for the device.
Network design fundamentals
18 Network Design Reference for Avaya VSP 4000 February 2014
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